Ri Configuration Example - Cisco ONS 15454 SDH Configuration Manual

Chapter 26 Configuring IEEE 802.17b Resilient Packet Ring
RPR-IEEE RI requires communication over the topology between the ML-Series cards. Traffic loss can
Caution
occur if there is not enough communication and more than one span is down on a ring, for any reason.
If the primary ML-Series card goes to standby because the interconnect interface goes down, then the
Caution
ring interface is placed administratively down (admin down). This action signals the secondary
ML-Series card to go to active. At this time, if the user configures a no shutdown on the primary
ML-Series card ring interface, the ring interface comes up. This will signal the secondary ML-Series
card to go to standby, which causes traffic loss. This occurs with all ML-Series card microcodes and with
both RPR-IEEE and Cisco proprietary RPR.
With Cisco proprietary RPR, a shutdown of the SPR interface puts ML1000-2 cards in passthrough
Caution
mode. This allows the card to participate in RI. ML1000-2 cards are the only ML-Series cards eligible
for RI. Other ML-Series cards fail to enter passthrough mode, when the SPR interface is shutdown.

RI Configuration Example

Excerpts of sample Cisco IOS code for an RPR RI for ML-Series-card-only connections are provided in
Example 26-9
and secondary ML-Series cards are connected to a foreign switch, any switch that is not an ML-Series
card, are provided in
Example
Example 26-9 Primary ML-Series Card Configuration
interface rpr-ieee0
In the above example, after rpr-ieee ri mode you need to insert the MAC address of the primary peer. To
fetch this address, log in to the primary peer ML-Series card and enter the command show interface
rpr-ieee as follows:
Router#show interface rpr-ieee 0
The MAC address of the primary peer is 0019.076c.7f71. The configuration would now appear as
rpr-ieee ri mode 0019.076c.7f71.
Example 26-10 Secondary ML-Series Card Configuration
interface rpr-ieee0
In the above example, after rpr-ieee ri mode you need to insert the MAC address of the secondary peer.
To fetch this address, log in to the secondary peer ML-Series card and enter the command show
interface rpr-ieee as follows:
and Example 26-10. Excerpts of sample Cisco IOS code for an RPR RI where the primary
Example 26-9
26-13.
no ip address
rpr-ieee ri mode
no shutdown
RPR-IEEE0 is up, line protocol is up
Hardware is RPR-IEEE Channelized SONET, address is 0019.076c.7f71 (bia 0019.076c.7f71)
no ip address
rpr-ieee ri mode
no shutdown
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
and Example 26-10. Status of RI can be found as illustratedin
RI Configuration Example
26-39