[c-nsp] 6vpe - me3600x

[Nick Hilliard]

On 02/10/2012 15:22, Adam Vitkovsky wrote:
> I thought this is on by default but apparently it's not
> 
> Try
> neighbor x.x.x.x transport multi-session

In general you don't want to enable  multisession bgp unless you know why
you need it and you understand all the consequences of doing so.  I really
wouldn't recommend this as a means of avoiding session flaps due to
capabilities renegotiation.

Nick


> 
> adam
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Aaron
> Sent: Tuesday, October 02, 2012 4:02 PM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 6vpe - me3600x
> 
> (resending due to ugly formatting)
> 
> When I enabled vpnv6 on my pre-existing vpnv4 neighbor session I saw it
> bounce....Is there any way around this ?  ...i'm concerned about the
> interruption (for operational environment) on the underlying vpnv4 l3vpn.
> Would be only momentary though right?... looks like 10 seconds from
> "nbr_reset" to "Up"
> 
> If no way to avoid this, how do y'all do it ?  maint window?
> 
> Aaron
> 
> noc-3600(config)#router bgp 64512
> 
> noc-3600(config-router)#address-family vpnv6 unicast
> 
>  % IPv6 routing not enabled
> 
>  noc-3600(config)#ipv unicast-routing
> 
>  noc-3600(config)#router bgp 64512
> 
>  noc-3600(config-router)#address-family vpnv6 unicast
> 
>  noc-3600(config-router-af)#neighbor 10.101.0.254 activate
> 
> *Oct  1 21:01:46: %BGP-5-NBR_RESET: Neighbor 10.101.0.254 reset
> (Capabilitychanged)
> 
> *Oct  1 21:01:46: %BGP-5-ADJCHANGE: neighbor 10.101.0.254 Down Capability
> changed
> 
>  *Oct  1 21:01:46: %BGP_SESSION-5-ADJCHANGE: neighbor 10.101.0.254 VPNv4
> Unicast topology base removed from session  Capability changed
> 
>  *Oct  1 21:01:47: %BGP-5-NBR_RESET: Neighbor 10.101.0.254 active reset
> (Peer closed the session)
> 
>  *Oct  1 21:01:47: %BGP_SESSION-5-ADJCHANGE: neighbor 10.101.0.254 VPNv6
> Unicast topology base removed from session  Peer closed the session
> 
>  *Oct  1 21:01:47: %BGP_SESSION-5-ADJCHANGE: neighbor 10.101.0.254 VPNv4
> Unicast topology base removed from session  Peer closed the session
> 
>  *Oct  1 21:01:56: %BGP-5-ADJCHANGE: neighbor 10.101.0.254 Up
> 
> 
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>