ES4626-SFP Management Guide.pdf

[as-set]: Show AS on the path in list, each AS is shown once.
Default: No aggregate configuration
Command Mode: BGP route mode
Usage Guide: Address aggregation reduces spreading routing messages outside. Use
summary-only option so to spread aggregate route to the neighbors without spreading
specific route. as-set option will list AS from each route covered by the aggregation only
once without repeat.
Example:
Switch(config-router)# aggregate-address 100.1.0.0/16 summary-only
Switch(config-router)# aggregate-address 100.2.0.0/16 summary-only as-set
Switch(config-router)# aggregate-address 100.3.0.0/16 as-set
17.8.3.5 bgp aggregate-nexthop-check
Command: bgp aggregate-nexthop-check
no bgp aggregate-nexthop-check
Function: Configures whether BGP checks all the route next-hop in aggregating. The
“no bgp aggregate-nexthop-check” command cancels this configuration, namely not
check the next-hop accordance of aggregate route
Parameter: None
Default: No nexthop checked during aggregating
Command Mode: Global mode
Usage Guide: When check is enabled, the aggregate will not be performed if the
next-hop of the covered routes are not in accordance. When checking is disabled, all
covered route will be aggregated into the aggregate route.
Example:
Switch(config)#bgp aggregate-nexthop-check
Relevant Command: aggregate-address, no aggregate-address
17.8.3.6 bgp always-compare-med
Command: bgp always-compare-med
no bgp always-compare-med
Function:Configures If MED comparation is always performed. The “no bgp
always-compare-med” command cancels this configuration.
Parameter: None
Default: Not configured.
Command Mode:BGP route mode
Usage Guide: Normally the BGP compares the MED only when the AS is the same. By
using this configuration, MED of routes from different AS source will also be compared.
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