R3303-HP 6600/HSR6600 Routers Layer 3 - IP Routing Command Reference

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suppress: Specifies a suppression threshold in the range of 1 to 20000. The route with a penalty value
higher than the threshold is suppressed. The default value is 2000.
ceiling: Specifies a ceiling penalty value in the range of 1001 to 20000. The value must be bigger than
the suppress value. The default value is 16000.
route-policy-name: Specifies routing policy name, a case-sensitive string of 1 to 63 characters.
half-life-reachable, half-life-unreachable, reuse, suppress and ceiling are mutually dependent. Once any
one is configured, all the others should also be specified.
Usage guidelines
The command dampens only EBGP routes rather than IBGP routes.
Examples
# In BGP view, configure BGP route dampening.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] dampening 15 15 1000 2000 10000
# In BGP-VPN instance view, configure BGP route dampening. (The VPN has been created.)
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-ipv4-vpn1] dampening 15 15 1000 2000 10000
Related commands
• display bgp routing-table dampened
• display bgp routing-table dampening parameter
• display bgp routing-table flap-info
• reset bgp dampening
• reset bgp flap-info
default ipv4-unicast
Use default ipv4-unicast to enable the default use of IPv4 unicast address family for the peers that are
established using the peer as-number command.
Use undo default ipv4-unicast to disable the default use of IPv4 unicast address family for the peers that
are established using the peer as-number command.
Syntax
default ipv4-unicast
undo default ipv4-unicast
Default
The use of IPv4 unicast address family is enabled.
Views
BGP view
Default command level
2: System level