[alcatel-nsp] iBGP-multipath configuration

[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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