approaches to enable the ospf protocol in apache cloudstack
TRANSCRIPT
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Consultant Manager at ShapeBlue Specialise in….
Designing and deploying enterprise and public clouds
CloudStack Brazil Community Chairman
Designed Clouds USP, Globo.com and many others in Brazil
CloudStack Committer Director of CSA Brazil Chapter
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About ShapeBlue Introduction to the OSPF Protocol How it works?
Network Design The routing software suite Quagga
Then… why integrate a dynamic routing protocol? Scope Use Case UI Workflow
References
OSPF protocol on CloudStack
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“ShapeBlue are expert builders of public & private clouds. They are the leading global
Apache CloudStack integrator & consultancy”
…and we’re hiring!
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OSPF – Open Shortest Path First Routing protocol for Internet (IP) protocol networks IPG (Interior Gateway Protocol) and falls into the group of
interior routing protocols Uses a link state routing algorithm Uses a single Anonymous System (AS) OSPFv2 referenced in RFC2328 for IPv4 OSPFv3 referenced in RFC5340 for IPv6
Introduction to the OSPF Protocol
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OSPF Area 1
How OSPF works?
Routing table:192.168.0.0/24
local192.168.1.0/24 via
R2192.168.2.0/24 via
R3
Routing table:192.168.1.0/24
local192.168.0.0/24 via
R1192.168.2.0/25 via
R3
Routing table:192.168.2.0/24
local192.168.0.0/24 via
R1192.168.1.0/24 via
R2
R1
R3 R2
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Quagga Fork of GNU Zebra Supports all popular Linux distributions and Unix derivatives Supports protocols such as RIPv1, RIPv2, RIPng, OSPFv2, OSPFv3, IS-IS,
BGP-4, and BGP-4+ Quagga is a collection of several daemons that work together to build
the routing table A system with Quagga installed acts as a dedicated router Exchanges routing information with other routers using routing
protocols Uses this information to update the kernel routing Changes dynamically the configuration The user may view routing table information from the Quagga CLI
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Quagga Architecture
OSPFD BGPD RIPD Zebra
Unix Kernel routing table
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Config files are generally found in: /etc/quagga/*.conf
Each of the daemons has its own config file. For example, OSPFv2’s default config file name is: /etc/quagga/ospfd.conf
Quagga setup
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interface eth0 ip ospf authentication message-digest ip ospf message-digest-key 1 md5 ospfrouter ospf ospf router-id 200.0.0.11 log-adjacency-changes redistribute connected passive-interface default no passive-interface eth0 network 200.0.0.0/24 area 0.0.0.0 area 0.0.0.0 authentication message-digest
ospfd.conf example
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Support to the OSPF Version 2 protocol to announce IPv4 routes using Quagga routing software (daemon ospfd)
Support to the OSPF Version 3 protocol to announce IPv6 routes using Quagga routing software (daemon ospf6d)
Create a specific network offering to support the OSPF protocol in the VPC-VR Enable routing to guest networks behind VPC-VR without NATing Support to the services:
DHCP DNS Network ACL (iptables, ip6tables) Load Balancing (HAproxy) Password reset
Scope
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Other networ
k
Use caseOther networ
k
Tier1192.1684.0/
24
VM VM VM
VM VM VM
VM VM VM
VM VM VM
Super CIDR: 192.168.4.0/22
Super CIDR: 192.168.8.0/22
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OSPF Area 1Transit CIDR:
192.168.0.0/22VR1
VR2
Core
Tier2192.168.5.0
/24Tier3192.168.6.0
/24 Tier1192.168.8.0
/24Tier2192.168.9.0
/24Tier3
192.168.10.0/24
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WorkflowAdmin user:
Users:
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UI mock (Admin User)1 – Configure the Public Network for OSPF Transit Area
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UI mock (Admin User)2 – Add Super-CIDRs that will be associated to Guest OSPF VPCs Networks
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UI mock (Admin User)3 – Add a new VPC Network Offering with OSPF dynamic routing
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UI mock (Users)1 – Add a new VPC Routed Network
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http://www.nongnu.org/quagga/ https://tools.ietf.org/html/rfc2328 https://tools.ietf.org/html/rfc5340 https://tools.ietf.org/html/rfc3531 https://tools.ietf.org/html/rfc2460 https://cwiki.apache.org/confluence/display/CLOUDSTACK/
IPv6+in+VPC+Router http://en.wikipedia.org/wiki/Open_Shortest_Path_First
References
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Questions?
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