HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

Part number: 5998-7722b

Software version: CMW710-R0304

Document version: 6PW104-20150914

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Contents

Configuring basic IP routing ········································································································································ 1 Routing table ······································································································································································ 1 Dynamic routing protocols ··············································································································································· 2 Route preference ······························································································································································· 2 Load sharing ······································································································································································ 3 Route backup ····································································································································································· 3 Route recursion ·································································································································································· 3 Route redistribution ··························································································································································· 4 Extension attribute redistribution······································································································································ 4 Configuring the maximum lifetime for routes and labels in the RIB ············································································· 4 Configuring the maximum lifetime for routes in the FIB ································································································ 5 Configuring RIB NSR ························································································································································ 5 

Configuring IPv4 RIB NSR ······································································································································· 6 Configuring IPv6 RIB NSR ······································································································································· 6 

Displaying and maintaining a routing table ·················································································································· 6 

Configuring static routing ············································································································································ 8 Configuring a static route ················································································································································· 8 Configuring BFD for static routes ····································································································································· 9 

Bidirectional control mode ······································································································································ 9 Single-hop echo mode ·········································································································································· 10 

Configuring static route FRR ·········································································································································· 11 Configuration guidelines ······································································································································ 11 Configuration procedure ······································································································································ 12 

Displaying and maintaining static routes ···················································································································· 13 Static route configuration examples ····························································································································· 13 

Basic static route configuration example ············································································································ 13 BFD for static routes configuration example (direct next hop) ·········································································· 15 BFD for static routes configuration example (indirect next hop) ······································································· 17 Static route FRR configuration example ·············································································································· 20 

Configuring a default route ······································································································································· 23 

Configuring RIP ·························································································································································· 24 Overview ········································································································································································· 24 

RIP route entries ····················································································································································· 24 Routing loop prevention ········································································································································ 24 RIP operation ·························································································································································· 24 RIP versions ···························································································································································· 25 TRIP ········································································································································································· 25 Protocols and standards ······································································································································· 26 

RIP configuration task list ··············································································································································· 26 Configuring basic RIP ···················································································································································· 27 

Enabling RIP ··························································································································································· 27 Controlling RIP reception and advertisement on interfaces ·············································································· 28 Configuring a RIP version ····································································································································· 28 

Configuring RIP route control ········································································································································ 29 Configuring an additional routing metric ··········································································································· 29 Configuring RIPv2 route summarization·············································································································· 30 Disabling host route reception ····························································································································· 31 

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Advertising a default route ··································································································································· 31 Configuring received/redistributed route filtering ····························································································· 32 Configuring a preference for RIP ························································································································· 32 Configuring RIP route redistribution ····················································································································· 32 

Tuning and optimizing RIP networks ···························································································································· 33 Configuration prerequisites ·································································································································· 33 Setting RIP timers ··················································································································································· 33 Configuring split horizon and poison reverse ···································································································· 34 Configuring the maximum number of ECMP routes ·························································································· 34 Enabling zero field check on incoming RIPv1 messages ·················································································· 35 Enabling source IP address check on incoming RIP updates ············································································ 35 Configuring RIPv2 message authentication ········································································································ 36 Configuring the RIP triggered update interval ···································································································· 36 Specifying a RIP neighbor ···································································································································· 37 Configuring TRIP ···················································································································································· 37 Configuring RIP network management ················································································································ 38 Configuring the RIP packet sending rate ············································································································ 38 Setting the maximum length of RIP packets ········································································································ 39 

Configuring RIP GR ························································································································································ 39 Enabling RIP NSR ··························································································································································· 40 Configuring BFD for RIP ················································································································································· 41 

Configuring single-hop echo detection (for a directly connected RIP neighbor) ············································ 41 Configuring single-hop echo detection (for a specific destination) ·································································· 42 Configuring bidirectional control detection ········································································································ 42 

Configuring RIP FRR ······················································································································································· 43 Configuration restrictions and guidelines ··········································································································· 43 Configuration prerequisites ·································································································································· 43 Configuration procedure ······································································································································ 43 

Displaying and maintaining RIP ··································································································································· 44 RIP configuration examples ··········································································································································· 45 

Configuring basic RIP ··········································································································································· 45 Configuring RIP route redistribution ····················································································································· 48 Configuring an additional metric for a RIP interface ························································································· 50 Configuring RIP to advertise a summary route ··································································································· 51 Configuring RIP GR ··············································································································································· 54 Configuring RIP NSR ············································································································································· 55 Configuring BFD for RIP (single-hop echo detection for a directly connected neighbor) ······························ 57 Configuring BFD for RIP (single-hop echo detection for a specific destination)·············································· 59 Configuring BFD for RIP (bidirectional control detection) ················································································· 62 Configuring RIP FRR ·············································································································································· 66 

Configuring OSPF ······················································································································································ 70 Overview ········································································································································································· 70 

OSPF packets ························································································································································· 70 LSA types ································································································································································ 70 OSPF areas ···························································································································································· 71 Router types ···························································································································································· 74 Route types ····························································································································································· 74 Route calculation ··················································································································································· 75 OSPF network types ·············································································································································· 75 DR and BDR ··························································································································································· 75 Protocols and standards ······································································································································· 77 

OSPF configuration task list ·········································································································································· 77 Enabling OSPF ······························································································································································· 78 

Configuration prerequisites ·································································································································· 78 

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Configuration guidelines ······································································································································ 78 Enabling OSPF on a network ······························································································································· 79 Enabling OSPF on an interface ··························································································································· 80 

Configuring OSPF areas ··············································································································································· 80 Configuring a stub area ······································································································································· 80 Configuring an NSSA area ·································································································································· 81 Configuring a virtual link ······································································································································ 81 

Configuring OSPF network types ································································································································· 82 Configuration prerequisites ·································································································································· 82 Configuring the broadcast network type for an interface ················································································· 83 Configuring the NBMA network type for an interface ······················································································ 83 Configuring the P2MP network type for an interface ························································································ 84 Configuring the P2P network type for an interface ··························································································· 84 

Configuring OSPF route control ··································································································································· 85 Configuration prerequisites ·································································································································· 85 Configuring OSPF route summarization ············································································································· 85 Configuring received OSPF route filtering ·········································································································· 86 Configuring Type-3 LSA filtering ·························································································································· 86 Configuring an OSPF cost for an interface ········································································································ 87 Setting the maximum number of ECMP routes ··································································································· 87 Configuring OSPF preference ······························································································································ 88 Configuring discard routes for summary networks ···························································································· 88 Configuring OSPF route redistribution ················································································································ 89 Advertising a host route ········································································································································ 90 

Tuning and optimizing OSPF networks ························································································································ 90 Configuration prerequisites ·································································································································· 90 Setting OSPF timers ··············································································································································· 91 Setting LSA transmission delay ···························································································································· 92 Setting SPF calculation interval ···························································································································· 92 Setting the LSA arrival interval ····························································································································· 92 Setting the LSA generation interval······················································································································ 93 Disabling interfaces from receiving and sending OSPF packets ······································································ 93 Configuring stub routers ······································································································································· 94 Configuring OSPF authentication ························································································································ 94 Adding the interface MTU into DD packets ········································································································ 95 Configuring a DSCP value for OSPF packets ····································································································· 96 Setting the maximum number of external LSAs in LSDB ···················································································· 96 Setting OSPF exit overflow interval ····················································································································· 96 Enabling compatibility with RFC 1583 ··············································································································· 97 Logging neighbor state changes ·························································································································· 97 Configuring OSPF network management ··········································································································· 97 Configuring the LSU transmit rate ························································································································ 98 Enabling OSPF ISPF ·············································································································································· 99 Configuring prefix suppression ···························································································································· 99 Configuring prefix prioritization ························································································································ 100 Configuring OSPF PIC ········································································································································ 100 Setting the number of OSPF logs ······················································································································· 101 

Configuring OSPF GR ················································································································································· 101 Configuring OSPF GR restarter ·························································································································· 102 Configuring OSPF GR helper ····························································································································· 103 Triggering OSPF GR ··········································································································································· 103 

Configuring OSPF NSR ··············································································································································· 104 Configuring BFD for OSPF ·········································································································································· 104 

Configuring bidirectional control detection ······································································································ 105 

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Configuring single-hop echo detection ············································································································· 105 Configuring OSPF FRR ················································································································································· 105 

Configuration prerequisites ································································································································ 106 Configuration guidelines ···································································································································· 106 Configuration procedure ···································································································································· 106 

Displaying and maintaining OSPF ····························································································································· 107 OSPF configuration examples ···································································································································· 108 

Basic OSPF configuration example ··················································································································· 108 OSPF route redistribution configuration example ···························································································· 111 OSPF route summarization configuration example ························································································· 113 OSPF stub area configuration example ············································································································ 116 OSPF NSSA area configuration example ········································································································ 118 OSPF DR election configuration example ········································································································· 120 OSPF virtual link configuration example ··········································································································· 125 OSPF GR configuration example ······················································································································· 127 OSPF NSR configuration example ···················································································································· 129 BFD for OSPF configuration example ··············································································································· 131 OSPF FRR configuration example ······················································································································ 134 

Configuring IS-IS ····················································································································································· 138 Overview ······································································································································································· 138 

Terminology ························································································································································· 138 IS-IS address format ············································································································································· 138 NET ······································································································································································· 139 IS-IS area ······························································································································································ 140 IS-IS network types ·············································································································································· 142 IS-IS PDUs ····························································································································································· 143 Protocols and standards ····································································································································· 144 

IS-IS configuration task list ··········································································································································· 145 Configuring basic IS-IS ················································································································································ 146 

Configuration prerequisites ································································································································ 146 Enabling IS-IS ······················································································································································· 147 Configuring the IS level and circuit level ·········································································································· 147 Configuring P2P network type for an interface ································································································ 147 

Configuring IS-IS route control ···································································································································· 148 Configuration prerequisites ································································································································ 148 Configuring IS-IS link cost ··································································································································· 148 Specifying a preference for IS-IS ······················································································································· 150 Configuring the maximum number of ECMP routes ························································································ 150 Configuring IS-IS route summarization ·············································································································· 151 Advertising a default route ································································································································· 152 Configuring IS-IS route redistribution ················································································································ 152 Configuring IS-IS route filtering ·························································································································· 153 Configuring IS-IS route leaking ·························································································································· 155 

Tuning and optimizing IS-IS networks ························································································································ 155 Configuration prerequisites ································································································································ 155 Specifying the interval for sending IS-IS hello packets ···················································································· 155 Specifying the IS-IS hello multiplier ···················································································································· 156 Specifying the interval for sending IS-IS CSNP packets ·················································································· 156 Configuring a DIS priority for an interface ······································································································· 157 Enabling source address check for hello packets on a PPP interface ···························································· 157 Disabling an interface from sending/receiving IS-IS packets ········································································· 157 Enabling an interface to send small hello packets ··························································································· 158 Configuring LSP parameters ······························································································································· 158 Controlling SPF calculation interval ··················································································································· 161 

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Configuring convergence priorities for specific routes ···················································································· 162 Setting the LSDB overload bit ····························································································································· 163 Configuring the ATT bit ······································································································································· 163 Configuring the tag value for an interface ······································································································· 164 Configuring system ID to host name mappings ································································································ 164 Enabling the logging of neighbor state changes ····························································································· 165 Enabling IS-IS ISPF ··············································································································································· 166 Enabling prefix suppression ······························································································································· 166 Configuring IS-IS network management ············································································································ 167 Configuring IS-IS PIC ··········································································································································· 168 

Enhancing IS-IS network security ································································································································ 168 Configuration prerequisites ································································································································ 168 Configuring neighbor relationship authentication ··························································································· 169 Configuring area authentication ························································································································ 169 Configuring routing domain authentication ······································································································ 170 

Configuring IS-IS GR ···················································································································································· 170 Configuring IS-IS NSR ·················································································································································· 171 Configuring BFD for IS-IS············································································································································· 172 Configuring IS-IS FRR ··················································································································································· 173 

Configuration prerequisites ································································································································ 173 Configuration guidelines ···································································································································· 173 Configuration procedure ···································································································································· 173 

Configuring IS-IS MTR ·················································································································································· 176 Displaying and maintaining IS-IS ······························································································································· 177 IS-IS configuration examples ······································································································································· 179 

Basic IS-IS configuration example ····················································································································· 179 DIS election configuration example ··················································································································· 183 IS-IS route redistribution configuration example ······························································································ 187 IS-IS authentication configuration example······································································································· 191 IS-IS GR configuration example ························································································································· 194 IS-IS NSR configuration example ······················································································································· 195 BFD for IS-IS configuration example ·················································································································· 198 IS-IS FRR configuration example ························································································································ 201 

Configuring BGP ····················································································································································· 205 Overview ······································································································································································· 205 

BGP speaker and BGP peer ······························································································································· 205 BGP message types ············································································································································· 205 BGP path attributes ············································································································································· 206 BGP route selection ············································································································································· 210 BGP route advertisement rules ··························································································································· 210 BGP load balancing ············································································································································ 211 Settlements for problems in large-scale BGP networks ···················································································· 212 MP-BGP ································································································································································· 215 BGP configuration views ···································································································································· 216 Protocols and standards ····································································································································· 217 

BGP configuration task list ·········································································································································· 218 Configuring basic BGP ················································································································································ 221 

Enabling BGP ······················································································································································· 221 Configuring a BGP peer ····································································································································· 222 Configuring dynamic BGP peers ······················································································································· 224 Configuring a BGP peer group ·························································································································· 226 Specifying the source address of TCP connections ························································································· 236 

Generating BGP routes ················································································································································ 237 Injecting a local network ···································································································································· 238 

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Redistributing IGP routes····································································································································· 239 Controlling route distribution and reception ············································································································· 241 

Configuring BGP route summarization ············································································································· 241 Advertising optimal routes in the IP routing table ···························································································· 243 Advertising a default route to a peer or peer group ······················································································· 244 Limiting routes received from a peer or peer group ························································································ 245 Configuring BGP route filtering policies ··········································································································· 247 Configuring BGP route dampening ··················································································································· 252 

Controlling BGP path selection ··································································································································· 254 Specifying a preferred value for routes received ····························································································· 254 Configuring preferences for BGP routes ··········································································································· 255 Configuring the default local preference ·········································································································· 257 Configuring the MED attribute ··························································································································· 258 Configuring the NEXT_HOP attribute ················································································································ 263 Configuring the AS_PATH attribute ··················································································································· 266 Configuring the SoO attribute ···························································································································· 272 

Tuning and optimizing BGP networks ························································································································ 274 Configuring the keepalive interval and hold time ···························································································· 274 Configuring the interval for sending updates for the same route ··································································· 275 Enabling BGP to establish an EBGP session over multiple hops ···································································· 276 Enabling immediate re-establishment of direct EBGP connections upon link failure ···································· 277 Enabling 4-byte AS number suppression ·········································································································· 277 Enabling MD5 authentication for BGP peers ··································································································· 278 Configuring BGP load balancing ······················································································································ 279 Configuring IPsec for IPv6 BGP ························································································································· 280 Disabling BGP to establish a session to a peer or peer group ······································································ 281 Configuring GTSM for BGP ······························································································································· 281 Configuring BGP soft-reset·································································································································· 282 Protecting an EBGP peer when memory usage reaches level 2 threshold ···················································· 286 Configuring an update delay for local MPLS labels ························································································ 287 

Configuring a large-scale BGP network ···················································································································· 288 Configuring BGP community ······························································································································ 288 Configuring BGP route reflection ······················································································································· 290 Configuring a BGP confederation ····················································································································· 292 

Configuring BGP GR ··················································································································································· 293 Configuring BGP NSR ················································································································································· 294 Enabling SNMP notifications for BGP························································································································ 295 Enabling logging of session state changes ··············································································································· 295 Configuring BFD for BGP ············································································································································ 296 Configuring BGP FRR ··················································································································································· 297 Configuring BGP policy accounting ··························································································································· 300 Configuring 6PE ··························································································································································· 301 

Configuring basic 6PE ········································································································································ 301 Configuring optional 6PE capabilities ·············································································································· 302 

Displaying and maintaining BGP ······························································································································· 304 Displaying BGP ···················································································································································· 304 Resetting BGP sessions ········································································································································ 307 Clearing BGP information ·································································································································· 307 

IPv4 BGP configuration examples ····························································································································