Cisco ASR 9001 support for Ethernet out-of-band channel (EOBC) Unidirectional Link Detection (UDLD)
link flap history Control Link Manager (CLM) Table version is added in Cisco IOS XR Software Release
5.1.0.
Note
Cisco ASR 9000 Series nV Edge System Rack-by-Rack Upgrade
SUMMARY STEPS
1.
Rack 1 Shutdown Phase
2.
Rack 1 Activate Phase
3.
Critical Failover Phase
4.
Rack 0 Activate Phase
5.
Cleanup Phase
DETAILED STEPS
Step 1
Rack 1 Shutdown Phase
a) Rack 1 is isolated from the cluster and the external network, and is made into a standalone node.
b) Inter Rack Links (IRLs) are disabled.
c) External facing Line Card (LC) interfaces are disabled.
d) Control link interfaces are disabled.
Step 2
Rack 1 Activate Phase
a) The target software is activated on Rack 1.
b) Install Activate occurs on Rack 1 with the parallel reload method.
c) If Auto-FPD (Field Programmable Device) is configured, it occurs now.
Step 3
Critical Failover Phase
a) Traffic is migrated to Rack 1.
b) All interfaces on Rack 0 are shut down.
c) All interfaces on Rack 1 are brought into service.
d) Protocols relearn routes from neighboring routers and convergence begins.
Step 4
Rack 0 Activate Phase
a) The target software is activated on Rack 0.
b) Install Activate occurs on Rack 0 with the parallel reload method.
Step 5
Cleanup Phase
a) Control links are reactivated.
b) IRLs are reactivated.
c) Rack 0 rejoins the cluster as Backup.
d) Any external links disabled as part of the upgrade are brought back into service.
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
149
Configuring the nV Edge System on the Cisco ASR 9000 Series Router
Cisco ASR 9000 Series nV Edge System Rack-by-Rack Upgrade
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