[alcatel-nsp] iBGP-multipath configuration

Thu Apr 29 12:43:36 EDT 2010

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 ? :

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 ?

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))

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Message: 1
Date: Tue, 27 Apr 2010 12:54:02 -0700
From: "Scott Weeks" <surfer at mauigateway.com>
To: <alcatel-nsp at puck.nether.net>
Subject: Re: [alcatel-nsp] iBGP-multipath configuration
Message-ID: <20100427125402.2920BE44 at resin14.mta.everyone.net>
Content-Type: text/plain; charset="UTF-8"

--- luthfis_mail at yahoo.com wrote:
From: Luthfi Akbar <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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Message: 2
Date: Tue, 27 Apr 2010 16:32:21 -0500
From: "Raut, Devendra Y (Devendra)" <devendra.raut at alcatel-lucent.com>
To: Ruslan Pustovoitov <rus-p at mostelekom.net>, Pan vangels
    <panvangels at hotmail.com>
Cc: "alcatel-nsp at puck.nether.net" <alcatel-nsp at puck.nether.net>
Subject: Re: [alcatel-nsp] iBGP-multipath configuration
Message-ID:
    <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] On Behalf Of Ruslan Pustovoitov
Sent: Tuesday, April 27, 2010 5:57 AM
To: Pan vangels
Cc: 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
> To: 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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