Configuring A Large-Scale Bgp Network; Configuring Bgp Community - HP 6125XLG Configuration Manual

Step
2. Enter BGP view or BGP-VPN
instance view.
3. Configure BGP to protect
EBGP peer or peer group
when the memory usage
reaches level 2 threshold.
To configure BGP to protect EBGP peer or peer group when the memory usage reaches level 2 threshold
(IPv6):
Step
1. Enter system view.
2. Enter BGP view or BGP-VPN
instance view.
3. Configure BGP to protect
EBGP peer or peer group
when the memory usage
reaches level 2 threshold.

Configuring a large-scale BGP network

In a large network, the number of BGP connections is huge and BGP configuration and maintenance are
complicated. To simply BGP configuration, you can use the peer group, community, route reflector, and
confederation features as needed. For more information about configuring peer groups, see
"Configuring a BGP peer

Configuring BGP community

By default, a router does not advertise the COMMUNITY or extended community attribute to its peers or
peer groups. When the router receives a route carrying the COMMUNITY or extended community
attribute, it removes the attribute before advertising the route to other peers or peer groups.
Perform this task to enable a router to advertise the COMMUNITY or extended community attribute to its
peers for route filtering and control. You can also reference a routing policy to add or modify the
COMMUNITY or extended community attribute for specific routes. For more information about routing
policy, see "Configuring routing policies."
To configure BGP community (IPv4):
Command
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a. bgp as-number
b. ip vpn-instance
vpn-instance-name
peer { group-name | ip-address }
low-memory-exempt
Command
system-view
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a. bgp as-number
b. ip vpn-instance
vpn-instance-name
peer { group-name |
ipv6-address }
low-memory-exempt
group."
217
Remarks
N/A
By default, BGP tears down an
EBGP session to release memory
resources periodically when level
2 threshold is reached.
Remarks
N/A
N/A
By default, BGP tears down an
EBGP session to release memory
resources periodically when level
2 threshold is reached.