Vyatta Network OS Documentation

Learn how to install, configure and operate the Vyatta NOS, which helps drive our virtual networking & physical platforms portfolio.

protocols bgp <asn> parameters maximum-as-limit <number>

Allows BGP routes with the AS_PATH or AS4_PATH attribute containing ASes lesser than the specified number. If the AS_PATH or AS4_PATH attribute contains ASes greater than the configured value, the update messages containing the AS_PATH or AS4_PATH attribute is ignored and the session is retained.

set protocols bgp asn parameters maximum-as-limit number
delete protocols bgp asn parameters maximum-as-limit number

None.

asn

The number for the AS in which this router resides. The numbers range from 1 through 4294967294. The subrange, 64512 through 65534, is reserved for private AS.

number
Number specifying the ASes in the AS_PATH or AS4_PATH attribute. The value ranges from 1 through 254.

Configuration mode.


protocols {
    bgp asn {
        parameters {
            maximum-as-limit number
                 
            }
      }
 }

Use the set form of this command to allow BGP routes with AS_PATH or AS4_PATH attribute containing ASes lesser than the specified number.

Use the delete form of this command to delete BGP routes with AS_PATH or AS4_PATH attribute containing ASes lesser than the specified number.

Note:

When you configure this command and do a soft reset in the peer, the BGP table should flush out the prefixes that have an as-path length that is more than the configured maximum-as-limit value.

When soft-reconfiguration is enabled irrespective of the configured maximum-as-limit value, all the received prefixes should be stored in Adj-Rib-In, and then maximum-as-limit should be applied and prefixes with an as-path length more than the configured value should be flushed out of the BGP table. For more information on soft-reconfiguration, see protocols bgp <asn> neighbor <id> address-family ipv6-unicast soft-reconfiguration inbound.