Users Guide
Version Description
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.3.1.0 Introduced the ability to substitute IGP cost for MED when a peer/peer-group
outbound route-map is set as internal.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage Information
You can use the redistribute command to advertise the IGP cost as the MED on redistributed routes.
When you set the route-map with metric-type internal and applied outbound to an EBGP peer/peer-group,
the advertised routes corresponding to those peer/peer-groups have the IGP cost set as MED.
If you do not congure the default-metric command, in addition to the redistribute command, or
there is no route map to set the metric, the metric for redistributed static and connected is “0”.
To redistribute the default route (0.0.0.0/0), congure the neighbor default-originate command.
As BGP does not query next-hop information corresponding to locally originated routes, a local route with an
unreachable next-hop is chosen as the best route.
When a combination of locally originated and peer originated routes occurs, both these routes will exist in
the RTM. However, only the best route is kept active in the RTM and the remaining route is rendered in-
active.
It is possible to keep only one locally originated route in the BGP database. Network command has
preference over the re-distributed routes. When the locally originated route is no longer present in the
database the other route is automatically installed.
Related Commands neighbor default-originate — injects the default route.
router bgp
To congure and enable BGP, enter ROUTER BGP mode.
Syntax
router bgp as-number
To disable BGP, use the no router bgp as-number command.
Parameters
as-number Enter the AS number. The range is from 1 to 65535 (2 byte), from 1 to 4294967295
(4 byte), or from 0.1 to 65535.65535 (dotted format).
Defaults Not enabled.
Command Modes CONFIGURATION
Border Gateway Protocol
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