Dell PowerSwitch S4112F-ON OS10 Enterprise Edition User Guide Release 10.4.0ER - Page 274
AS number limit
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2 Enter a local-as number for the peer, and the AS values not prepended to announcements from the neighbors in ROUTERNEIGHBOR mode (1 to 4294967295). local-as as number [no prepend] 3 Return to ROUTER-BGP mode. exit 4 Enter a template name to assign to the peer-groups in ROUTER-BGP mode (up to 16 characters). template template-name 5 Enter a local-as number for the peer in ROUTER-TEMPLATE mode. local-as as number [no prepend] 6 Add a remote AS in ROUTER-TEMPLATE mode (1 to 65535 for 2 bytes, 1 to 4294967295 for 4 bytes). remote-as as-number Allow external routes from neighbor OS10(config)# router bgp 10 OS10(conf-router-bgp-10)# neighbor 32.1.1.2 OS10(conf-router-neighbor)# local-as 50 OS10(conf-router-neighbor)# exit OS10(conf-router-bgp-10)# template bgppg1 OS10(conf-router-template)# fall-over OS10(conf-router-template)# local-as 400 OS10(conf-router-template)# remote-as 102 Local AS number disabled OS10(config)# router bgp 102 OS10(conf-router-bgp-102)# neighbor 32.1.1.2 OS10(conf-router-neighbor)# no local-as 100 AS number limit Sets the number of times an AS number occurs in an AS path. The allow-as parameter permits a BGP speaker to allow the AS number for a configured number of times in the updates received from the peer. The AS-PATH loop is detected if the local AS number is present more than the number of times in the command. 1 Enter the neighbor IP address to use the AS path in ROUTER-BGP mode. neighbor ip address 2 Enter Address Family mode in ROUTER-NEIGHBOR mode. address-family {[ipv4 | ipv6] [unicast]) 3 Allow the neighbor IP address to use the AS path the specified number of times in ROUTER-BGP-NEIGHBOR-AF mode (1 to 10). allowas-in number Configure AS number appearance OS10(config)# router bgp 10 OS10(conf-router-bgp-10)# neighbor 1.1.1.2 OS10(conf-router-neighbor)# address-family ipv4 unicast OS10(conf-router-bgp-neighbor-af)# allowas-in 5 View AS numbers in AS paths OS10# show running-configuration bgp ! router bgp 101 no fast-external-fallover ! address-family ipv4 unicast dampening ! 274 Layer 3