Users Guide

1 Enable soft-reconguration for the BGP neighbor and BGP template in ROUTER-BGP mode. BGP stores all the updates that the
neighbor receives but does not reset the peer-session. Entering this command starts the storage of updates, which is required to do
inbound soft reconguration.
neighbor {ip-address} soft-reconfiguration inbound
2 Enter Address Family mode in ROUTER-NEIGHBOR mode.
address-family {[ipv4 | ipv6] [unicast]}
3 Congure soft-conguration for the neighbors belonging to the template.
soft-reconfiguration inbound
4 Clear all information or only specic details in EXEC mode.
clear ip bgp {neighbor-address | * } [soft in]
• * — Clears all peers.
• neighbor-address — Clears the neighbor with this IP address.
Soft-reconguration of IPv4 neighbor
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-bgp-neighbor-af)# soft-reconfiguration inbound
Soft-reconguration of IPv6 neighbor
OS10(conf-router-neighbor)# address-family ipv6 unicast
OS10(conf-router-bgp-neighbor-af)# soft-reconfiguration inbound
Redistribute iBGP route to OSPF
When you congure the system redistribute BGP routes to OSPF, by default, the system redistributes only the eBGP routes. To redistribute
iBGP routes to OSPF, congure a route-map and apply it to the
redistribute command under the OSPF conguration.
Sample conguration
The following sample topology has two switches, Core 1 and Core 2, that are connected to each other and share routes using OSPF. A
border router BR is connected to Core 1 and shares routes using internal BGP. Core 1 redistributes the routes that are learned by iBGP to
OSPF to Core 2.
Conguration on BR
BR has BGP congured which forms BGP neighbor adjacency with Core 1.
interface Loopback0
ip address 192.168.100.1/24
!
interface ethernet1/1/1
no shutdown
no switchport
ip address 10.10.9.1
Layer 3
527