Limiting Routes Received From A Peer Or Peer Group - HP 5500 EI series Configuration Manual

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Step
1.
Enter system view.
2.
Enter BGP view or BGP-VPN
instance view.
3.
Enter BGP IPv4 unicast
address family view or
BGP-VPN IPv4 unicast
address family view.
4.
Advertise a default route to a
peer or peer group.
To advertise a default route to a peer or peer group (IPv6):
Step
1.
Enter system view.
2.
Enter BGP view.
3.
Enter BGP IPv6 unicast
address family view.
4.
Advertise a default route to a
peer or peer group.

Limiting routes received from a peer or peer group

This feature can prevent attacks that send a large number of BGP routes to the router.
If the number of routes received from a peer or peer group exceeds the upper limit, the router takes one
of the following actions based on your configuration:
Tear down the BGP session to the peer or peer group.
Display an alarm message.
Tear down the BGP session to the peer or peer group and, after a specific period of time,
reestablishes a BGP session to the peer or peer group.
You can specify a percentage threshold for the router to display an alarm message. When the ratio of the
number of received routes to the maximum number reaches the percentage value, the router displays an
alarm message.
To limit routes that a router can receive from a peer or peer group (IPv4):
Step
1.
Enter system view.
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
address-family ipv4 [ unicast ]
peer { group-name | ip-address }
default-route-advertise
[ route-policy route-policy-name ]
Command
system-view
bgp as-number
address-family ipv6 [ unicast ]
peer { group-name |
ipv6-address }
default-route-advertise
[ route-policy route-policy-name ]
Command
system-view
202
Remarks
N/A
N/A
N/A
By default, no default route is
advertised.
Remarks
N/A
N/A
N/A
By default, no default route is
advertised.
Remarks
N/A

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