NXOS bgp allowas-in command missing

[glennfinneran]

Hi Guys,

I am in the process of migrating WAN routing at our DC from a 3750 stack over to a pair of Nexus 5K's. The two 5548UP's have the L3 daughter cards installed and all appropriate licensing, each unit is currently running ver 5.1(3)N1(1a).   

We currently peer with an MPLS cloud via eBGP as do all our remote sites, this setup sees all of our sites connecting to the provider cloud with the same ASN. In order to accept these prefixes inbound we utilise the "allowas-in" command and the plan is to retain this setup. 

I have been reviewing the relevant command references and configuration guides however cannot confirm if this command in its current syntax exists, perhaps the syntax has changed and this is what I am missing?

I kind of need an answer to this one fairly quickly so would really appreciate if someone could help out asap.

Kind regards

Glenn

[SANTHOSHKUMAR SARAVANAN · Accepted solution]

Hi Glenn , 

BGP allow AS in is available in NX-OS 6.02

BGP enhancments

The following BGP enhancements are available in Cisco NX-OS 6.0(2)N1(1): ● BGP allow-AS-in:Allows BGP to accept the route that contains the local autonomous system (AS). ● BGP disable-peer-as-check: Allows external BGP (eBGP) learned routes to advertise to the peers in the same autonomous system. ● BGP local-AS:Allows a router to appear to be a member of a second autonomous system in addition to its real autonomous system. ● BGP prefix-peering:Allows passive peering from the BGP peer with an IP address within a given prefix range. ● BGP AS-path relax:Allows the switch to handle the paths received from different autonomous systems for multipath if their autonomous system path lengths are the same and other multipath conditions are met; by default, multipath is allowed when paths are received from peers in the same autonomous system. ● BGP remove-private-as: Removes private autonomous system numbers from outbound route updates to an eBGP peer.

http://www.cisco.com/c/en/us/products/collateral/switches/nexus-6000-series-switches/product_bulletin_c25-726519.html

HTH

Sandy

[glennfinneran]

Thanks for the info Sandy, much appreciated.

Kind regards

Glenn