flexi pcket ethernet

8/10/2019 Flexi pcket Ethernet

http://slidepdf.com/reader/full/flexi-pcket-ethernet 1/50

Ethernet traffic

FT4272AEN02GLA2 © 2010 Nokia Siemens Networks

1

Contents

1 Master IO Module / Enhanced IO Module 3

1.1 Ethernet Payload Configuration 5

1.2 QoS Configuration 7

1.3 Data Switch Statistics 14

2 Gigabit Ethernet IO Interface 15

2.1 Ethernet Payload Configuration 16

2.2 Quality of Service 20

2.3 Data Switch Statistics 30

3 Standard-2, Enhanced-2 & 42xE1 Master IO Module 31

3.1

Ethernet Payload configuration 32

3.2 QoS Configuration 32

4 V-LAN Management 37

5 Port Based Forwarding Mode 50

Ethernet traffic



Ethernet traffic

FT4272AEN02GLA2

© 2010 Nokia Siemens Networks2



Ethernet traffic


3

1 Master IO Module / Enhanced IO Module

Fig. 1 Master IO Module with Fast Ethernet

TIP

For Ethernet traffic there are no cross connection and no loopback facilities



Ethernet traffic

FT4272AEN02GLA2




Ethernet traffic


5

1.1 Ethernet Payload Configuration

Before establishing any type of traffic, enter in the "Ethernet Payload Configuration"window as follows:

Administration > Network Configuration > Ethernet Payload

Ethernet Operational mode 2+0 VLAN Port Segregation

Fig. 2 Ethernet Payload for Fast Ethernet

With "Auto Negotiation" Disable is possible to choose the port speed (10 or100Mbs) and the Port Duplex mode (Half or Full).

"STP status" (Enable or Disable): it must be enabled to avoid loops in the frametransmission. Loops are present when one NE is connected to another NE by morethan one path (i.e. in Ring Configuration or in mesh network.

"Bridge Priority" (Root / Normal / Backup): if the STP has been enabled, one NEmust be configured as “Root”, all the other NEs as “Normal”. In case of failure of theRoot NE, the NE configured as “Backup” (if any) will replace the Root NE.



Ethernet traffic

FT4272AEN02GLA2


"Ethernet Operation Mode": this field is shown only in case of East/Westconfiguration.

In this case the following selections are available:

• 2+0 Normal: this mode is the standard mode of Ethernet operation. Traffic from theEast link, West link, and the front panel ports is switched using the equipmentinternal switch;

• 2+0 VLAN Port Segregation: this mode creates two internal VLANs, each oneforming one group:

• Group 1 = Port 1 associated to East Modem (Lower).

• Group 2 = Port 2 associated to West Modem (Upper).

This allows the user to maintain two separate networks, one on the East link, and oneon the West.



Ethernet traffic


7

1.2 QoS Configuration

The Quality of Service is a group of parameters to be set in order to differentiate thetraffic between Ethernet ports using a priority configuration scheme

For each Ethernet user interface (Port1 or Port2) the following priority criteria areapplied:

• Port-base

• 802.1Q VLAN TAG priority

• IPv4 ToS priority

The "QoS configuration" Menu is reported in Fig. 3.

Fig. 3 QoS Configuration Menu



Ethernet traffic

FT4272AEN02GLA2


1.2.1 Port Priority

To set a Priority scheme, the QoS Global configuration has the following parameters:• Priority Resolution > set to Port Priority

• Priority Queue Ratio > set to 1:2, 1:4, 1:8, 1:16 (2 Queues and 4 Ratios )

The Priority Queue Ratio set to 1:2 assigns, to the High Priority Port, a double DataRate compared to the other Port..

Fig. 4 QoS Global Configuration Port Priority Fast Ethernet



Ethernet traffic


9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Port Priority will select which port has the Higher Switch Priority

Fig. 5 QoS Port Priority MAP Fast Ethernet



Ethernet traffic

FT4272AEN02GLA2


1.2.2 Tag Priority

This priority is based on IEEE 802.1p.

Prepare "QoS Global Configuration" window as in Fig. 6:

Fig. 6 QoS Global Configuration TAG Priority Fast Ethernet

Priority Resolution is 802.1Q TAG



Ethernet traffic


11

In "QoS Configuration", select the voice "802.1Q Tag Priority".

In the selected window there are 8 Tag priorities (from 0 to 7); associate the Tagpriorities to the Switch Priority (0 Low, 1 High).

WARNINGIn this case, the Priority Queue Ratio is fixed to 1:2.

Fig. 7 QoS 802.1Q Tag Priority Map Fast Ethernet



Ethernet traffic

FT4272AEN02GLA2


1.2.3 IPV4 ToS Priority

Type of Service (ToS) is a layer 3 priority. The "QoS Global Configuration" windowhas to be set as in Fig. 8:

"IPv4 TOS Priority" = enabled

"Priority Resolution" = IPV4 TOS

Fig. 8 IPV4 ToS Priority Resolution Fast Ethernet

The TOS priority is a sequence of 3 bits with 8 decimal possibilities (from 0 to 7).

In the "QoS IPv4 ToS Priority Map" window, select which ToS priority will have theHigh Switch Priority (0 Low, 1 High).

In the example, the High priority is the TOS Priority 5.

WARNINGIn this case, the Priority Queue Ratio is fixed to 1:2.



Ethernet traffic


13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fig. 9 QoS IPV4 ToS Priority Map Fast Ethernet



Ethernet traffic

FT4272AEN02GLA2


1.3 Data Switch Statist ics

To check the correct data flow of the Ethernet ports in the Analysis menu a windowcalled Data Switch Statistics, shows in real time their conditions

Fig. 10 Data Switch



Ethernet traffic


15

2 Gigabit Ethernet IO Interface

User

SFP Module

User

Ethernet Data

1Gbit only 1Gbit/100/10 Mbs

Fig. 11 Gigabit Ethernet Front Panel



Ethernet traffic

FT4272AEN02GLA2


2.1 Ethernet Payload Configuration

The gigabit Ethernet Module contains 5 Ethernet ports:

• 4x Gigabit/100/10 Mbs and

• 1 x Gigabit Ethernet only with the SFP (Small Factory Pluggable) module, opticalor electrical.

In the tree menu select: Administration > Network Configuration >Ethernet Payload,to enter in the Ethernet Payload configuration



Ethernet traffic


17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ethernet Operational Mode 2+0VLAN Port Segregation

SFP VLAN Group Group 2

Fig. 12 Gigabit Ethernet Payload Configuration



Ethernet traffic

FT4272AEN02GLA2


TIPNote on the Ethernet Operation Mode:

EAST/EAST configuration Ethernet Operation Mode:

• 2+0 VLAN Port Segregation: this mode creates two internal VLANs, each oneforming one Group:

Group 1 = Port 1 and 2 associated to the Lower Modem.

Group 2 = Port 3 and 4 associated to the Upper Modem.

Port 5 (SFP port) can be associated to Group 1or Group 2.

This allows the user to maintain two separate networks over the 2+0 East/East Link;

• 2+0 Trunk Port: this mode allows for higher network throughput via “trunking” twomodems together. Layer 2 MAC addresses are used to perform load balancingbetween modems, therefore utilization of full throughput is dependent upon traffic.

• 4+0 Master: not supported.

EAST/WEST configuration

Ethernet Operation Mode:

• 2+0 Normal: this mode is the standard mode of Ethernet operation. Traffic from theEast link, West link, and the front panel ports is switched using the IDU’s internal

switch;• 2+0 VLAN Port Segregation : this mode creates two internal VLANs, each one

forming one group:

Group 1 = Port 1 and 2 associated to East Modem (Lower).

Group 2 = Port 3 and 4 associated to West Modem (Upper).

Port 5 (SFP port) can be associated to Group 1(East Modem) or to Group 2 (WestModem).

This allows the user to maintain two separate networks, one on the East link, and oneon the West



Ethernet traffic


19

The following SFP parameters are displayed only if an SFP module is installed:

• SFP Vendor Name – Displays the SPF vendor name

• SFP Link Type – Optical / Electrical

• Set the following Parameters for the SFP module:

• Auto-Negotiation - Enable / Disable

• Port Speed – 10 / 100 / 1000

• Port Duplex – Half / Full

• Flow Control – Disable / Symmetric / Receive Only / Transmit Only

• Master-Slave – Slave / Master / Auto

• Restart Auto-Negotiation: to activate the restart of the auto-negotiation

• Shutdown on Link Failure: to activate the shutdown of the Ethernet port followinga radio link failure to avoid the flooding. After the restoring of the radio link, theEthernet port automatically will be activated.

• SFP VLAN Group: Group 1/Group 2:

• Group 1 is associated to the Lower Modem (East);

• Group 2 is associated to the Upper Modem (West)



Ethernet traffic

FT4272AEN02GLA2


2.1.1 Flow Control

The use of this feature is when some components in a network are faster than others.The element in overload will receive a pause frame in order to balance the traffic,(symmetric option).

2.2 Quality of Service

The basic function of the Quality Of Service are the same as chapter 1.2 with somedifferences. The following criteria are now available:

• Port Priority

• 802.1Q Tag Priority

• DiffServ Priority

• High Queue Preempt

Fig. 13 QoS for Gigabit Ethernet



Ethernet traffic


21

2.2.1 Switch Priori ty

WARNINGBefore selecting the Priority in the QoS, remember that at the end, the queueare four (4) according to the following window (Tx Queue 0÷3):

Fig. 14 Switch Priority



Ethernet traffic

FT4272AEN02GLA2


2.2.2 Port Priority

"QoS Global Configuration" for the Port Priority is as follow:

Fig. 15 QoS Global configuration Port Priority Gigabit Ethernet

The system can support a Weighted Fair Queuing (WFQ) scheduling mode with

configurable weights from 1 to 49. The default Priority Queue Weight is 1-2-4-8. Thismeans that the port with High priority will have a Data rate eight (8) time grater thanport with Low Priority



Ethernet traffic


23

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The QoS Port Priority Map is as follow:

Higher priority

Lower priority

Fig. 16 QoS Port Priority Gigabit Ethernet



Ethernet traffic

FT4272AEN02GLA2


2.2.3 802.1Q Tag Priori ty

The "QoS Global Configuration" is prepared as follows with the four weights 1-2-4-8equal to the previous example:

Fig. 17 QoS Global configuration 802.1Q TAG Priori ty Gigabit Ethernet



Ethernet traffic


25

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

In the "QoS 802.1Q Tag Priority Map", select the Tag Priority and associate it theSwitch Priority (from 0 to 7).

Fig. 18 QoS TAG Priority Map Gigabit Ethernet



Ethernet traffic

FT4272AEN02GLA2


2.2.4 DiffServ Priority

Differential Service Priority is a layer 3 QoS with 64 setting possibilities (from 0 to 63).Settings in the "QoS Global Configuration" are:

Fig. 19 QoS global configuration Diffserv Priority Gigabit Ethernet



Ethernet traffic


27

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The 64 choices are in the "QoS DiffServ DSCP Map".

Up to DSCP 63

Fig. 20 OoS DiffServ DSCP Map Gigabit Ethernet



Ethernet traffic

FT4272AEN02GLA2


2.2.5 High Queue Preempt

With this solution, the LAN with the highest priority in Port TAG or DiffServ, takes allthe Data rate on air, until the service is delivered before starting to serve the lowerpriority queue. High Queue Preempt is set in the QoS Global Configuration.

Fig. 21 High Queue Preempt Gigabit Ethernet

WARNINGWith this option the Priority Queue Weights are not valid



Ethernet traffic


29

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.6 High Queue Preempt

The Setting in QoS Global configuration is the same as Fig. 21. The LAN port withHigh priority (SPF in the example) is serviced until it is empty before starting to servethe lower priority queue

P1

SFP Gigabit ethernet = 100 Mbs

P1 Fast Ethernet = 100 Mbs

SFP 90 Mbs

Datarate 90 Mbs

SFP

P1 0,1 Mbs

Fig. 22 High queue test bed Example



Ethernet traffic

FT4272AEN02GLA2


2.3 Data Switch Statist ics

To check the correct data flow of the Ethernet ports in the Analysis menu the DataSwitch Statistics, shows in real time their conditions

Fig. 23 Data Switch Gigabit Ethernet



Ethernet traffic


31

3 Standard-2, Enhanced-2 & 42xE1 Master IO

Module

Fast Ethernet

Fig. 24 FAST Ethernet Standard-2, Enhanced-2 & 42xE1 Master IO



Ethernet traffic

FT4272AEN02GLA2


3.1 Ethernet Payload configuration

TIPSame Payload of the Master IO module for the Fast Ethernet (see Chapter 1.1).

3.2 QoS Configuration

For each Ethernet user interface (Port1 or Port2) the following priority criteria areapplied:

• Port-base

• 802.1Q VLAN TAG priority

• DiffServ Priority

Fig. 25 QoS Standard-2, Enhanced-2 & 42xE1 Master IO

The scheduling could be selected between:

• Weighted Fair Queuing Scheme with fixed weight 8 - 4 - 2 - 1

• Strict Priority Scheme : the highest priority queue is served until is empty beforestarting to service the lower priority queue



Ethernet traffic


33

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Priority Resolution in this case appears if both 802.1Q and Diffserv Priority havebeen selected has shown in the next figure.

Fig. 26 Standard-2, Enhanced-2 & 42xE1 Master IO Master Module Fast Ethernet



Ethernet traffic

FT4272AEN02GLA2


3.2.1 Port Priority

The screen, shown below, enables the user to assign the priority to the 2 Ethernetinterfaces present on the front panel of the unit (each port can be associated to a Txqueue). The parameters listed on this page are:

• Port Priority – Enter for each Port, the priority (0 = Low; 3 = High).

Fig. 27 Standard-2, Enhanced-2 & 42xE1 Master IO Module Fast Ethernet



Ethernet traffic

FT4272AEN02GLA2


3.2.3 DiffServ Priority

Same concept for the gigabit Ethernet (see chapter 2.2.4) with 4 Tx queues.

Fig. 29 DiffServ DSCP Map Standard-2, Enhanced-2 & 42xE1 Master IO Module Fast Ethernet



Ethernet traffic


37

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 V-LAN Management

To enable the VLAN manipulations and functionalities the global configuration “VLANManagement” is available to the user via GUI and via SNMP.

Fig. 30 Global V-Lan Configuration

The possible selection is:

Fig. 31 V-Lan Setting



Ethernet traffic

FT4272AEN02GLA2


4.1.1 Single-TAG Set

Fig. 32 Single Tag Mode

In Single-Tag mode the ingress frames into the switch will be processed in thefollowing way:



Ethernet traffic


39

Fig. 33 Single Tag switch behavior

4.1.1.1 Default V-LAN ID

It is possible, per each available port, to configure the Default VLAN ID assigned tothe port. The Default VLAN ID is the value inserted in the VLAN tag added by theFlexiHybrid IDU. By default all ports are associated to the DEFAULT group withVID=1.

The p-bit value to be used in the added tag is user configurable too. Note that theuser cannot modify the p-bit in the tag that is already present in the ingress frame(replacement is not supported).

4.1.1.2 P-bit configuration aspects

In the GigE and EnhGigE implementation the value of the p-bit is determined on thebase of the Port priority value and can not be independent. Note that the Web-LCTGUI automatically aligns the port priority value to the p-bit value and vice versa, whenthe user change one of the two parameters.

In other modules (42E1, Standard2, Enhanced2) the default port p-bit can bespecified by the user



Ethernet traffic

FT4272AEN02GLA2


4.1.1.3 Ingress Policy

The user can configure, per each Front Panel Port, which frame type can be admitted

to the switch:

Note : Radio ports are always configured as “Admit all” (no user configurable).

Fig. 34Ingress Policy

4.1.1.4 Egress Policy

On the egress side (frames that are leaving the Ethernet switch), in case of VLANManagement is Single tag it is possible for the user to configure if the tag shall bepreserved or removed using the Egress Policy configuration. This configuration isavailable for the Front Panel Ports only.

Note: For the Radio ports the value is automatically set to “Don’t Remove” and it is not user configurable.

Fig. 35 Egress Policy



Ethernet traffic


41

4.1.2 Double Tag Mode

Fig. 36 Double Tag

When VLAN Management is equal to Double Tag (“Double Tag (Stag + Ctag) ” or“Double Tag (Ctag + Ctag)”) a different parameter is available to the User, it is herenamed “Port DoubleTag Mode”. It is configurable for each Front Panel Port and Fig.37contains the description of the possible values.

Note that also the Egress policy is configured with the Port Double Tag Mode

parameter (see 4.1.2.1).



Ethernet traffic

FT4272AEN02GLA2


Fig. 37 Port double tag Mode

The tagging or un-tagging management of frames entering the switch is not explicitly

user configurable but it is implicitly defined by the VLAN Management parameter. Fig.38 summarizes the applied Ingress frame manipulation for each configuration.

(5)Note that this case should not happen if the network is properly configured because the packets enter the

transport network via a User port and consequently at each network port they have already been tagged with the

proper tag.

Fig. 38 Ingress frame Manipulation in Double Tag mode

Applying the above mentioned tables the behavior across a radio link is describedhere below in Fig. 39



Ethernet traffic


43

“U” means that the port is configured as User

“N” means that the port is configured as Network

Double tag (Stag + Ctag) mode: frame formats at both User and Network ports

Double tag (Ctag + Ctag) mode: frame formats at both User and Network ports

Fig. 39

The cases above can be easily extended also to the cases where the NE is inEast/West configuration.

4.1.2.1 Egress Policy

When the VLAN Management is double tag the egress policy is not configured via adedicated parameter but it is automatically determined on the base of the PortDouble Tag Mode configuration.

If the port has been configured as “Network” its egress policy is automatically

configured to “Don’t Remove”.

If the port has been configured as “User ” its egress policy is automatically configuredas “Remove”.



Ethernet traffic

FT4272AEN02GLA2


4.1.3 V-LAN Forwarding

When the forwarding mode is “VLAN based” the user configures the VLAN to bemanaged and the ports that belong to each VLAN.

It shall be possible to configure up to 64 different VLANs and per each one the userselects the ports that belong to that VLAN.

The forwarding is allowed only between the ports that belong to the same VLAN.

For a better user interface it should be possible to assign the ports to each VLAN inunique GUI window.

Fig. 40 VLAN connection Table Example

In order to set the V-LAN forwarding is necessary to edit the STATIC V-LANConfiguration Menu:



Ethernet traffic


45

Fig. 41 Static V-LAN Configuration

selecting "Add New VLAN" it is possible to create a new forwarding criteria for acertain V-Lan.



Ethernet traffic

FT4272AEN02GLA2


Fig. 42 V-lan configuration example

selecting "Update" the new v-lan configuration will appear.



Ethernet traffic


47

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fig. 43

The user created V-lan can be edited, ( ) or deleted, ( ); only the first v-lan,(Default) cannot be deleted but only edited.



Ethernet traffic

FT4272AEN02GLA2


4.1.4 P-bit configuration aspects

In the GigE and EnhGigE implementation the value of the p-bit is determined on thebase of the Port priority value and can not be independent. Note that the Web-LCTGUI automatically aligns the port priority value to the p-bit value and vice versa, whenthe user change one of the two parameters.

In 42E1, Standard2 and Enhanced2 Master modules, when QoS criteria differentfrom p-bit criteria, it allows p-bit of the incoming frames to be overwritten; moreoverthe p-bit value can be changed on the base of the type of crossed ports and otherenable criteria. The behavior is here summarized:

In Single tag Mode

• When Port Based or DiffServ criteria are enabled the original p-bit of the incoming

frame are overwritten by the equipment.

• When only the p-bit based criterion is enable the behavior is correct (p-bit of thetagged frames are preserved, untagged frames are tagged with the default p-bitconfigured for the incoming port.

In Double Tag (Stag + Ctag) or Tag (Ctag + Ctag) mode

• At the egress of the transport network the original frame format (i.e.: the p-bit valueof the tag or tags) is correctly preserved in any combination of QoS criteriaenabling.

• When only port based QoS is enable: the p-bit value of the added outer tag ischanged at each port by assigning the default p-bit of the ports the frames gothrough.

• When only p-bit based QoS is enable: the p-bit value of the added outer tag canbe the copy of the inner one or the default value of the port p-bit.

• When DiffServ based QoS only is enable o If the ingress frames are IPv4/IPv6Untagged or C-tagged the value of p-bit is determined on the base of the selectedTX output queue and consequently they are a sort of re-mapping of the DiffServvalue. o Otherwise the value of p-bit is changed at each port according to thedefault p-bit priority assigned to the ports.

4.1.5 Quality of Service management

The following table lists the QoS classification criteria that can be applied for eachVLAN Management mode. When the VLAN Management is different from disable theQoS classification criteria take into account the outer VLAN tag value (the tag islogically added on the base of the ingress port and it is added before the QoSclassification).



Ethernet traffic


49

Fig. 44 Applicable QoS criteria

Fig. 45 Applicable QoS criteria



Ethernet traffic

5 Port Based Forwarding Mode

When the forwarding mode is “Port Based” the user can configure which ports areconnected to each other.

Forwarding is allowed only among connected ports.

WARNINGIs possible to enable the port based forwarding only when the V-Lanmanagement is DISABLE.

Selecting "Administration", "V-Lan configuration", "port Based Forwarding":

Fig. 46 Port Based Forwarding Configuration

flexi pcket ethernet

Documents