Nokia 7330 - Aggregator-ID-Zero; Table 500 Aggregator-ID-Zero Command; Table 501 Always-Compare-Med Command

Virtual Private Routed Network Service
500
FD 100/320Gbps NT and FX NT IHub Services Guide
3HH-11985-AAAA-TQZZA Issue: 13
7.10.9.3 aggregator-id-zero
Table 500 aggregator-id-zero command
7.10.9.4 always-compare-med
Table 501 always-compare-med command
Item Description
Syntax [no] aggregator-id-zero
Context configure>service>vprn>bgp
configure>service>vprn>bgp>group
configure>service>vprn>bgp>group>neighbor
Description This command is used to set the router ID in the BGP aggregator path attribute to zero when
BGP aggregates routes. This prevents different routers within an AS from creating aggregate
routes that contain different AS paths.
When BGP is aggregating routes, it adds the aggregator path attribute to the BGP update
messages. By default, BGP adds the AS number and router ID to the aggregator path attribute.
When this command is enabled, BGP adds the router ID to the aggregator path attribute. This
command is used at the group level to revert to the value defined under the global level, while
this command is used at the neighbor level to revert to the value defined under the group level.
The no form of the command used at the global level reverts to default where BGP adds the
AS number and router ID to the aggregator path attribute.
The no form of the command used at the group level reverts to the value defined at the group
level.
The no form of the command used at the neighbor level reverts to the value defined at the
group level.
Default no aggregator-id-zero
Item Description
Syntax always-compare-med {zero | infinity}
no always-compare-med
Context configure>service>vprn>bgp
Description This command specifies how the Multi-Exit Discriminator (MED) path attribute is used in the
BGP route selection process. The MED attribute is always used in the route selection process
regardless of the peer AS that advertised the route. This parameter determines what MED
value is inserted in the RIB-IN. If this parameter is not configured, only the MEDs of routes that
have the same peer ASs are compared.
The no form of the command removes the parameter from the configuration.
Default no always-compare-med — Only compare MEDs of routes that have the same peer AS.
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