[c-nsp] next-hop-self under address-family vpnv4 also?

[Vitkovský Adam]

Next-hop-self is enabled automatically under vpnvX AF. 

If the code supports it I'd recommend:

address-family vpnv4
  bgp advertise-best-external  <-- enables best-external + pic(if supported). 
  no bgp recursion host <--disables recursive lookup for BGP NHs. 
  bgp nexthop route-map BGP_NHT <--specifies which prefixes qualify as BGP NHs. 
  bgp nexthop trigger delay 0 <--allows BGP to act on IGP events immediately(enable if FRR backup is available for the BGP NH). 

route-map BGP_NHT permit 10 
 match ip address prefix-list PE_LOOPBACKS
 match source-protocol "igp" <--if you are using hierarchical MPLS you need to add BGP there as well.
route-map BGP_NHT permit 20
 match source-protocol connected


adam
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> CiscoNSP List
> Sent: Friday, September 19, 2014 3:32 AM
> To: Will Tardy; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] next-hop-self under address-family vpnv4 also?
> 
> Cheers.
> 
> Any other "tweaks" to default config you recommend?  i.e. timers etc?
> 
> 
> > From: will.tardy at vocus.com.au
> > To: cisco-nsp at puck.nether.net
> > Date: Fri, 19 Sep 2014 00:42:23 +0000
> > Subject: Re: [c-nsp] next-hop-self under address-family vpnv4 also?
> >
> > It¹s not needed.
> >
> >
> > "address-family vpnv4" section is used to define which routers
> > participate in the VPNv4.  The underlying MPLS network will forward
> > labels between the
> > VPNv4 end-point CE's. Next-hop-self isn¹t required. All that¹s
> > required is MPLS and IGP reachability between the CE¹s participating
> > in the vpnv4 domain.
> >
> > On 19/09/2014 10:31 am, "CiscoNSP List" <cisconsp_list at hotmail.com>
> wrote:
> >
> > >Is it recommended to add it under vpnv4 also?
> > >
> > >i.e.
> > >
> > >router bgp xxxxxx
> > >...
> > >neighbor iBGP-IPv4-PEERS update-source Loopback0 neighbor
> > >iBGP-IPv4-PEERS next-hop-self neighbor xxx.xxx.xxx.xxx peer-group
> > >iBGP-IPv4-PEERS...
> > >address-family vpnv4
> > >  bgp redistribute-internal
> > >  neighbor  iBGP-IPv4-PEERS send-community extended
> > >  neighbor iBGP-IPv4-PEERS next-hop-self
> > >  neighbor xxx.xxx.xxx.xxx activate
> > >
> > >Cheers.
> > >
> > >
> > >
> > >_______________________________________________
> > >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/
> 
> _______________________________________________
> 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/