Cisco ONS 15454 SDH Configuration Manual page 271

Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
Cisco proprietary RPR needs to be provisioned on each ML-Series card that is in the Cisco proprietary
RPR. To provision it, perform the following procedure, beginning in global configuration mode:
Command
Step 1
Router(config)# bridge irb
Step 2
Router(config)# interface spr 1
Step 3
Router(config-if)# spr station-id
station-ID-number
Step 4
Router(config-if)# spr wrap
{immediate | delayed}
Step 5
Router(config-if)# carrier-delay msec
milliseconds
Step 6
Router(config-if)# spr load-balance
{auto | port-based}
Step 7
Router(config-if)# end
Step 8
Router# copy running-config
startup-config
Configuring Cisco Proprietary RPR Characteristics and the SPR Interface on the ML-Series Card
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
Purpose
Enables the Cisco IOS software to both route and bridge
a given protocol on separate interfaces within a single
ML-Series card.
Creates the SPR interface on the ML-Series card or
enters the SPR interface configuration mode. The only
valid SPR number is 1.
Configures a station ID. The user must configure a
different number for each SPR interface that attaches to
the ring. Valid station ID numbers range from 1 to 254.
(Optional) Sets the Cisco proprietary RPR wrap mode to
either wrap traffic the instant it detects a SONET/SDH
path alarm or to wrap traffic after the 200 msec delay,
which gives the SONET/SDH protection time to register
the defect and declare the link down. Use immediate if
Cisco proprietary RPR is running over unprotected
SONET/SDH circuits. Use delayed for bidirectional line
switched rings (BLSRs), path protections, multiplex
section-shared protection rings (MS-SPRings), or SNCP
protected circuits.
The default setting is immediate.
(Optional) Sets the carrier delay time. The default setting
is 200 milliseconds, which is optimum for SONET/SDH
protected circuits.
If the carrier delay time is changed from the
Note
default, the new carrier delay time must be
configured on all the ML-Series card interfaces,
including the SPR, POS, and Gigabit Ethernet or
Fast Ethernet interfaces.
(Optional) Specifies the Cisco proprietary RPR
load-balancing scheme for unicast packets. The
port-based load balancing option maps even ports to the
POS 0 interface and odd ports to the POS 1 interface. The
default auto option balances the load based on the MAC
addresses or source and destination addresses of the IP
packet.
The no form of this command reinstates the default
MAC-based load balancing.
Exits to privileged EXEC mode.
(Optional) Saves configuration changes to NVRAM.
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