next-hop-self under address-family vpnv4 also?
next-hop-self under address-family vpnv4 also?
BGP PIC Edge would be recommended but if it is not supported, use different RDs even for the same VPN. This would allow second best path to be installed for the same prefix.
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@
> CiscoNSP List
> Sent: Friday, September 19, 2014 3:32 AM
> To: Will Tardy; cisco-nsp@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@vocus.com.au<
> > To: cisco-nsp@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@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@puck.nether.net<
> > >https://puck.nether.net/
> > >archive at http://puck.nether.net/
> >
> >
> > ______________________________
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@
> CiscoNSP List
> Sent: Friday, September 19, 2014 3:32 AM
> To: Will Tardy; cisco-nsp@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@vocus.com.au<
> > To: cisco-nsp@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@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@puck.nether.net<
> > >https://puck.nether.net/
> > >archive at http://puck.nether.net/
> >
> >
> > ______________________________