HPE FlexNetwork 5510 HI Series Layer 3 - Ip Routing Configuration Guide

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Specifying the source address of TCP connections
By default, BGP uses the primary IPv4/IPv6 address of the output interface in the optimal route to a
peer or peer group as the source address of TCP connections to the peer or peer group.
Change the source address in the following scenarios:
• If the peer's IPv4/IPv6 address belongs to an interface indirectly connected to the local router,
specify that interface as the source interface for TCP connections on the peer. For example,
interface A on the local end is directly connected to interface B on the peer. If you use the peer
x.x.x.x as-number
as-number command on the local end, and x.x.x.x is not the IPv4 address of
interface B, you must do the following:
a. Use the peer connect-interface command on the peer.
b. Specify the interface whose IPv4 address is x.x.x.x as the source interface.
• If the source interface fails on a BGP router that has multiple links to a peer, BGP must
re-establish TCP connections. To avoid this problem, use a loopback interface as the source
interface or use the IP address of a loopback interface as the source address.
• If the BGP sessions use the IP addresses of different interfaces, specify a source address or
source interface for each peer to establish multiple BGP sessions to a router. Specify a source
address for each peer if the BGP sessions use the different addresses of the same interface.
Otherwise, the local BGP router might fail to establish a TCP connection to a peer when it uses
the optimal route to determine the source address.
To specify the source address of 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 IPv4
address of TCP connections
to a peer or peer group.
peer
ipv4-address [ mask-length ]
source-address
source-ipv4-address
peer
group-name
source-address
source-ipv4-address
The
peer source-address
command is available in Release
1121 and later.
By default, BGP uses the primary
IPv4 address of the output
interface in the optimal route to a
peer or peer group as the source
address of TCP connections to the
peer or peer group.
4. Specify the source interface
of TCP connections to a peer
or peer group.
peer
{ group-name | ip-address
[ mask-length ] }
connect-interface
interface-type
interface-number
To specify the source interface for TCP connections (IPv6):
Step Command Remarks
1. Enter system view.
system-view
N/A

HPE FlexNetwork 5510 HI Series Specifications

General

Brand	HPE
Model	FlexNetwork 5510 HI Series
Category	Switch
Language	English