VPRN Service Configuration Commands
Page 656 7210 SAS M Services Guide
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 — BGP adds the AS number and router ID to the aggregator path attribute.
always-compare-med
Syntax always-compare-med {zero | infinity}
no always-compare-med
Context config>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.
Parameters zero — Specifies that for routes learned without a MED attribute that a zero (0) value is used in the
MED comparison. The routes with the lowest metric are the most preferred.
infinity — Specifies for routes learned without a MED attribute that a value of infinity (4294967295)
is used in the MED comparison. This in effect makes these routes the least desirable.
as-path-ignore
Syntax [no] as-path-ignore
Context config>service>vprn>bgp
Description This command determines whether the AS path is used to determine the best BGP route.
If this option is present, the AS paths of incoming routes are not used in the route selection process.
The no form of the command removes the parameter from the configuration.
Default no as-path-ignore
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