Virtual Private Routed Network Services
7210 SAS-X OS Services Guide Page 819
prefix-limit
Syntax prefix-limit limit [log-only] [threshold percent]
no prefix-limit
Context config>service>vprn>bgp>group
config>service>vprn>bgp>group>neighbor
Description This command configures the maximum number of routes BGP can learn from a peer.
When the number of routes reaches a certain percentage (default is 90% of this limit), an SNMP trap
is sent. When the limit is exceeded, the BGP peering is dropped and disabled.
The no form of the command removes the prefix-limit.
Default no prefix-limit
Parameters limit — The number of routes that can be learned from a peer, expressed as a decimal integer.
Values 1 — 4294967295
log-only — Enables the warning message to be sent at the specified threshold percentage, and also
when the limit is exceeded. However, the BGP peering is not dropped.
percent — The threshold value (as a percentage) that triggers a warning message to be sent. The
default value is 90%.
rapid-withdrawal
Syntax [no] rapid-withdrawal
Context config>service>vprn>bgp
Description This command disables the delay (Minimum Route Advertisement) on sending BGP withdrawals.
Normal route withdrawals may be delayed up to the mininum route advertisement to allow for
efficient packing of BGP updates.
The no form of the command removes this command from the configuration and returns withdrawal
processing to the normal behavior.
Default no rapid-withdrawal
remove-private
Syntax [no] remove-private
Context config>service>vprn>bgp
config>service>vprn>bgp>group
config>service>vprn>bgp>group>neighbor
Description This command allows private AS numbers to be removed from the AS path before advertising them
to BGP peers.
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