Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 331
Example
Figure 12-2. Command Example: no bgp regex-eval-optz-disable
bgp retain-ibgp-nexthop
c e s
BGP does not update the NEXT_HOP attribute if it is a Route-Reflector. Use this command to retain
the NEXT_HOP attribute when advertising to internal BGP peer.
Syntax
bgp retain-ibgp-nexthop
Defaults
Disabled
Command Modes
ROUTER BGP
Command
History
bgp router-id
c e s
Assign a user-given ID to a BGP router.
Syntax
bgp router-id ip-address
To delete a user-assigned IP address, enter no bgp router-id.
Parameters
Defaults
The router ID is the highest IP address of the Loopback interface or, if no Loopback interfaces are
configured, the highest IP address of a physical interface on the router.
Command Modes
ROUTER BGP
Usage
Information
Peering sessions are reset when you change the router ID of a BGP router.
(conf-router_bgp)#no bgp regex-eval-optz-disable
(conf-router_bgp)#do show ip protocols
Routing Protocol is "ospf 22222"
Router ID is 2.2.2.2
Area Routing for Networks
51 10.10.10.0/00
Routing Protocol is "bgp 1"
Cluster Id is set to 10.10.10.0
Router Id is set to 10.10.10.0
Fast-external-fallover enabled
Regular expression evaluation optimization enabled
Capable of ROUTE_REFRESH
For Address Family IPv4 Unicast
BGP table version is 0, main routing table version 0
Distance: external 20 internal 200 local 200
(conf-router_bgp)#
Version 8.4.1.0 Introduced on E-Series TeraScale, C-Series, and S-Series.
Version 8.3.1.2 Introduced on E-Series ExaScale.
ip-address
Enter an IP address in dotted decimal format to reset only that BGP neighbor.