HP 6125XLG - Generating BGP Routes

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• On a BGP router that has multiple links to a peer, if the source interface fails, BGP has to reestablish
TCP connections. To avoid this problem, use a loopback interface as the source interface.
• To establish multiple BGP sessions between two routers, specify the source interface for establishing
TCP connections to each peer on the local router. Otherwise, the local BGP router may fail to
establish a TCP connection to a peer when using the outbound interface of the best route to the peer
as the source interface.
To specify the source interface for TCP connections (IPv4):
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ip vpn-instance
vpn-instance-name
N/A
3. Specify the source interface
for establishing TCP
connections to a peer or peer
group.
peer { group-name | ip-address }
connect-interface interface-type
interface-number
By default, BGP uses the outbound
interface of the best route to the
BGP peer or peer group as the
source interface for establishing a
TCP connection to the peer or peer
group.
To specify the source interface for TCP connections (IPv6):
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ip vpn-instance
vpn-instance-name
N/A
3. Specify the source interface
for establishing TCP
connections to a peer or peer
group.
peer { group-name |
ipv6-address } connect-interface
interface-type interface-number
By default, BGP uses the outbound
interface of the best route to the
BGP peer or peer group as the
source interface for establishing a
TCP connection to the peer or peer
group.
Generating BGP routes
BGP can generate routes in the following ways:
• Advertise local networks.
• Redistribute IGP routes.