[alcatel-nsp] iBGP-multipath configuration

Fri Apr 30 05:12:52 EDT 2010

Luthfi Akbar пишет:
> Dear All,
>
> Very sorry for my late response. thank you so much for your kind 
> assistance, I've try to make revisions on my configuration, but maybe 
> I need few more days to try it in the lab and hoped I can get expected 
> result. I've read from 'Routing Protocols Guide' and tried that 
> command, but I didn't get the 'load-balance' command, any clue ? :
Do not see to ibgp-multipath command.  When I talk about this command 
previously I imagine that you send vpn-ipv4 route from multiple BGP 
nexthop (ibgp-multihop do not applicable to the case with one BGP nexthop) .
So, instead use 'resolving tunnel ecmp value mechanism'  as Deven says.

>
> A:ALu1>config>router>bgp# ibgp-multipath
>   - ibgp-multipath
>   - no ibgp-multipath
>
> 'in order to have ibgp-multipath kind of behavior for VPN routes, 
> you've to configure the 'resolving Tunnel' (LDP, RSVP or GRE) ECMP value'
> this means that I have to configure ecmp value within VPRN, right ?

Yes. But you actually must have two or more lsp between your point in 
MPBGP cloud.

>
>
> Thanks and Regards,
> Luthfi
>
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> *Judul:* alcatel-nsp Digest, Vol 27, Issue 12
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> Today's Topics:
>
>   1. Re: iBGP-multipath configuration (Scott Weeks)
>   2. Re: iBGP-multipath configuration (Raut, Devendra Y (Devendra))
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 27 Apr 2010 12:54:02 -0700
> From: "Scott Weeks" <surfer at mauigateway.com 
> <mailto:surfer at mauigateway.com>>
> To: <alcatel-nsp at puck.nether.net <mailto:alcatel-nsp at puck.nether.net>>
> Subject: Re: [alcatel-nsp] iBGP-multipath configuration
> Message-ID: <20100427125402.2920BE44 at resin14.mta.everyone.net 
> <mailto:20100427125402.2920BE44 at resin14.mta.everyone.net>>
> Content-Type: text/plain; charset="UTF-8"
>
>
> --- luthfis_mail at yahoo.com <mailto:luthfis_mail at yahoo.com> wrote:
> From: Luthfi Akbar <luthfis_mail at yahoo.com 
> <mailto:luthfis_mail at yahoo.com>>
>
> Does anyone knows about ibgp-multipath configuration on 7750SR. The 
> idea is I want to load share VPRN traffic within MPBGP cloud, and 
> there are 2 objectives :
>
> a. All VPRN (VRFs) will use ibgp-multipath
> b. Only few VPRN (not all) will use ibgp-multipath
>
> I've tried using command ibgp-multipath on global context and ecmp 2 
> on service VPRN context but still cannot get load balance result.
> ------------------------------------------------------------------------------------
>
>
> If you get an off-list answer could you share it with the list?  That 
> way the archives have the answer for folks looking it up in the future 
> as well as the list members learn something.
>
> I don't have an answer for you, but as I was looking through the 
> "Routing Protocols Guide" (page 542) I saw this: ibgp-multipath 
> load-balance.
>
> If anyone else finds ibgp-multipath details in one of the 7750 guides 
> could you share with the group?
>
> Thanks,
> scott
>
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> -----------------
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>
> ------------------------------
>
> Message: 2
> Date: Tue, 27 Apr 2010 16:32:21 -0500
> From: "Raut, Devendra Y (Devendra)" <devendra.raut at alcatel-lucent.com 
> <mailto:devendra.raut at alcatel-lucent.com>>
> To: Ruslan Pustovoitov <rus-p at mostelekom.net 
> <mailto:rus-p at mostelekom.net>>, Pan vangels
>     <panvangels at hotmail.com <mailto:panvangels at hotmail.com>>
> Cc: "alcatel-nsp at puck.nether.net <mailto:alcatel-nsp at puck.nether.net>" 
> <alcatel-nsp at puck.nether.net <mailto:alcatel-nsp at puck.nether.net>>
> Subject: Re: [alcatel-nsp] iBGP-multipath configuration
> Message-ID:
>     
> <1A6A42F6F99D4648A6ABA52E7FF884A10B8A5ADC36 at USNAVSXCHMBSC1.ndc.alcatel-lucent.com 
> <mailto:1A6A42F6F99D4648A6ABA52E7FF884A10B8A5ADC36 at USNAVSXCHMBSC1.ndc.alcatel-lucent.com>>
>    
> Content-Type: text/plain; charset="koi8-r"
>
>
> ibgp-multipath for VPN routes is a misnomer
>
> VPN route's Nexthop resolution is controlled by individual VPRN 
> configuration. On 7750, one can configure VPN NH resolution through 
> LDP, RSVP, GRE or SDP (Service Distribution Point, which is basically 
> statically configured Tunnel). So in order to have ibgp-multipath kind 
> of behavior for VPN routes, you've to configure the 'resolving Tunnel' 
> (LDP, RSVP or GRE) ECMP value.
>
> -Deven
>
>
>
> -----Original Message-----
> From: alcatel-nsp-bounces at puck.nether.net 
> <mailto:alcatel-nsp-bounces at puck.nether.net> 
> [mailto:alcatel-nsp-bounces at puck.nether.net 
> <mailto:alcatel-nsp-bounces at puck.nether.net>] On Behalf Of Ruslan 
> Pustovoitov
> Sent: Tuesday, April 27, 2010 5:57 AM
> To: Pan vangels
> Cc: alcatel-nsp at puck.nether.net <mailto:alcatel-nsp at puck.nether.net>
> Subject: Re: [alcatel-nsp] iBGP-multipath configuration
>
> This is not true, ALU support ibgp-multipath for ipv4-vprn family and 
> ecmp work very well.
>
>
> Pan vangels ?????:
> > ibgp-multipath works only for core bgp routing instance v4/v6 routes,
> > not for vpn routes.
> > you have to use ecmp in the vprn combined with different RDs being
> > advertised within the core.
> >
> >
> >
> > ------------------------------------------------------------------------
> > Date: Tue, 27 Apr 2010 12:11:19 +0800
> > From: luthfis_mail at yahoo.com <mailto:luthfis_mail at yahoo.com>
> > To: alcatel-nsp at puck.nether.net <mailto:alcatel-nsp at puck.nether.net>
> > Subject: [alcatel-nsp] iBGP-multipath configuration
> >
> > Dear All,
> >
> > Does anyone knows about ibgp-multipath configuration on 7750SR. The
> > idea is I want to load share VPRN traffic within MPBGP cloud, and
> > there are 2 objectives :
> >
> > a. All VPRN (VRFs) will use ibgp-multipath
> > b. Only few VPRN (not all) will use ibgp-multipath
> >
> > I've tried using command ibgp-multipath on global context and ecmp 2
> > on service VPRN context but still cannot get load balance result.
> > 
> ------------------------------------------------------------------------------------
> > A:ALu1>config>router>bgp#
> > enable-peer-tracking
> > family ipv4 vpn-ipv4
> > ibgp-multipath
> > group "test"
> > type internal
> > peer-as 65200
> > neighbor 10.10.10.5
> > description "isat-rr1-sr1"
> > exit
> > exit
> > A:ALu1>config>service>vprn#
> > vrf-import "import-vrf-test"
> > vrf-export "export-vrf-test"
> > ecmp 2
> > autonomous-system 65200
> > route-distinguisher 10.10.10.20:110
> > auto-bind ldp
> > interface "to_Router" create
> > address 10.100.50.25/30
> > sap 7/1/2:50 create
> > exit
> > exit
> >
> > A:ALu2>config>router>bgp#
> > enable-peer-tracking
> > family ipv4 vpn-ipv4
> > ibgp-multipath
> > group "test"
> > type internal
> > peer-as 65200
> > neighbor 10.10.10.5
> > description "isat-rr1-sr1"
> > exit
> > exit
> > A:ALu2>config>service>vprn#
> > vrf-import "import-vrf-test"
> > vrf-export "export-vrf-test"
> > ecmp 2
> > autonomous-system 65200
> > route-distinguisher 10.10.10.30:110
> > auto-bind ldp
> > interface "to_Router" create
> > address 10.100.50.25/30
> > sap 7/1/2:50 create
> > exit
> >
> > Thanks in advance for any help :)
> > exit
> >
> >
> >
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