Alcatel-Lucent 7450 Configuration Manual page 449

Auto-generation of Filter-policy Address Prefix Match Lists
It is often desired to automatically update a filter policy when the configuration on a router
changes. To allow such a touch-less filter policy management, SROS allows auto-generation of
address prefixes for IPv4 address prefix match lists based on operator-configured criteria. When
the configuration on a router changes, the match lists address prefixes are automatically updated
and, in-turn, all filter policies (CPM or IOM) that use these match lists are automatically updated.
When using auto-generation of address prefixes inside an address prefix match list operators can:
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The following additional rules apply to auto-generated entries:
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NOTE: See Release notes and CLI section for details on what configuration supports address
prefix list auto-generation.
The following may apply to this feature:
If filter policy resources are not available for newly auto-generated address prefixes when a BGP
configuration changes, new address-prefixes will not be added to impacted match lists or filter
policies as applicable. An operator must free resources and change filter policy configuration or
must change BGP configuration to recover from this failure.
7450 ESS Router Configuration Guide
Specify one or more regex expression matches against SROS router configuration per list.
Specify wildcard matches by specifying regex wildcard match expression (".*").
Mix auto-generated entries with statically configured entries within a match list.
Operational and administrative states of a given router configuration are ignored when
auto-generating address prefixes.
Duplicates are not removed when populated by different auto-generation matches and
static configuration.
A configuration will fail if auto-generation of address prefix would result in filer policy
resource exhaustion on a filter entry, system, or line-card level.
Filter Policies
Page 449