Cisco 15327 User Manual download pdf (Page 267)

17-15

Ethernet Card Software Feature and Configuration Guide, R7.2

Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring

Creating the Bridge Group and Assigning the Ethernet and SPR Interfaces

The default behavior of the ML-Series cards is that no traffic is bridged over the Cisco proprietary RPR

even with the interfaces enabled. This is in contrast to many Layer 2 switches, including the

Cisco Catalyst 6500 and the Cisco Catalyst 7600, which forward VLAN 1 by default. The ML-Series

card will not forward any traffic by default, including untagged or VLAN 1 tagged packets.

For any Cisco proprietary RPR traffic to be bridged on an ML-Series card, a bridge group needs to be

created for that traffic. Bridge groups maintain the bridging and forwarding between the interfaces on

the ML-Series card and are locally significant. Interfaces not participating in a bridge group cannot

forward bridged traffic.

To create a bridge group for Cisco proprietary RPR, you determine which Ethernet interfaces need to be

in the same bridge group, create the bridge group, and associate these interfaces with the bridge group.

Then associate the SPR interface with the same bridge group to provide transport across the

Cisco proprietary RPR infrastructure.

Figure 17-8 illustrates a bridge group spanning the ML-Series card interfaces, including the SPR virtual

interface of Cisco proprietary RPR.

Step 7

Router(config-if)# interface pos 1

Enters the interface configuration mode to configure the

second POS interface that you want to assign to the SPR.

Step 8

Router(config-if)# encapsulation lex

Sets POS interface encapsulation as LEX (default).

Cisco proprietary RPR on the ML-Series card requires

LEX encapsulation.

Step 9

Router(config-if)# spr-intf-id

shared-packet-ring-number

Assigns the POS interface to the SPR interface. The

shared packet ring number must be 1 (the same shared

packet ring number that you assigned in Step 3), which is

the only shared packet ring number that you can assign

to the SPR interface.

Step 10

Router(config-if)# carrier-delay msec

milliseconds

(Optional) Sets the carrier delay time. The default setting

is 200 milliseconds, which is optimum for SONET/SDH

protected circuits.

Step 11

Router(config-if)# pos trigger defect

ber_sd-b3

(Optional) Configures a trigger to bring down the POS

interface when the SONET/SDH bit error rate exceeds

the threshold set for the signal degrade alarm. Bringing

the POS interface down initiates the wrap.

This command is recommended for all Cisco proprietary

RPR POS interfaces since excessive SONET/SDH bit

errors can cause packet loss.

Step 12

Router(config-if)# no shutdown

Enables the POS port.

Step 13

Router(config-if)# end

Exits to privileged EXEC mode.

Step 14

Router# copy running-config

startup-config

(Optional) Saves the configuration changes to NVRAM.

Command Purpose

1 2 ... 262 263 264 265 266 267 268 269 270 271 272 ... 583 584

Comments to this Manuals

No comments

Cisco 15327 User Manual Page 267

Comments to this Manuals

Related products and manuals for Hardware Cisco 15327