Alcatel-Lucent 7450 Basic System Configuration Manual page 50

Configuration Rollback
50
→ Rollback impacts the configuration state of the router, and as with normal
operator CLI or SNMP configuration changes, additional actions or steps may
need to occur before certain configuration changes take operational effect. Some
examples include:
- Configuration changes that require a shutdown and then no-shutdown to be
done by an operator in order to take operational effect also need this manual
shut/no-shut to be performed by the operator in order to take operational
effect after a rollback if the rollback changes those configuration items.
Some examples include:
- Changes to Autonomous System or Confederation value require a BGP shut/
no-shut.
- Changes to VPRN Max-routes requires a shut/no-shut on the VPRN service.
- Changes to OSPF/ISIS export-limit require a shut/no-shut on OSPF/ISIS.
- Configuration changes to an msap-policy that normally requires a tools
perform subscriber-mgmt eval-msap command to take operational effect
on subscribers that are already active. Rollback will change the msap-policy
configuration, but if it is required to have the configuration changes applied
to the active subscribers then the operator will have to run the eval-msap
tools command.
→ Any uncommitted changes (that is, the begin command was entered, some
changes made, but the commit command was never entered) in the following
areas will be lost/cleared when a rollback revert is initiated:
- configure>application-assurance>group policy
- configure>router>policy-options
- configure>system>sync-if-timing
• Some card and mda commands require a reboot, remove or rebuild of an entire card
or XMA/MDA. When these commands need to be executed as part of a rollback, the
impacted cards/mdas will be listed in a warning and the operator will be prompted
with a single y/n prompt to decide whether to proceed or not. This prompting will not
occur for a rollback initiated via SNMP, nor if the operator uses the now keyword
with the rollback revert command. Some examples of card and mda commands that
may cause a prompt are:
→ configure>card>card-type
→ configure>card>named-pool-mode (7450 ESS and 7750 SR)
→ configure>card>mda
→ configure>card>mda>mda-type
Basic System Configuration Guide