[c-nsp] load balancing

Rodney Dunn rodunn at cisco.com
Wed Sep 29 15:01:36 EDT 2004


Why not just put the two T1's in a MLPPP bundle?

You have to be careful when trying to do PBR with
recursive next hops.  We didn't use to support that
but I seem to remember a new option:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a008021de72.html

that does what you just said.  I think that is going to
be in the next release of 12.3T code.

Rodney


On Tue, Sep 28, 2004 at 02:41:25PM -0500, Brian Feeny wrote:
> 
> It can be done with pbr.
> 
> Setup a loopback on the remote ISP router, say (ex: 1.1.1.1)
> 
> then make 2 static route that get you there:
> 
> ip route 1.1.1.1 255.255.255.255 3.3.3.2 (3.3.3.2=next hop of t1 #1)
> ip route 1.1.1.1 255.255.255.255 3.3.3.6 (3.3.3.6=next hop of t1 #2)
> 
> then in your pbr, set the next hop to be 1.1.1.1
> 
> make sure cef is enabled, and under each t1 interface make sure ip cef  
> load-sharing per-packet
> is enabled.
> 
> Their are other ways this could be done too.
> 
> Brian
> 
> 
> On Sep 28, 2004, at 12:00 PM, Voll, Scott wrote:
> 
> > Here is the situation.
> >
> > I connect to another ISP for a service.  They only want there
> > application to go over the direct connection.  Everything else should  
> > go
> > out there internet connection and back in ours.
> >
> > I do not have access to there router but do have access to ours.  They
> > are currently using PBR.  But due to bandwidth needs we have went to  
> > two
> > different T1's and need to load balance the two.
> >
> > How would this best be done?  Any suggestions?  We were thinking Per
> > Packet load balancing, but if they have it setup correctly, the load
> > balancing isn't working with the PBR.
> >
> >
> > TIA
> >
> > Scott
> >
> >
> > _______________________________________________
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> >
> ------------------------------------------------------------------------ 
> ------
> Brian Feeny, CCIE #8036, CISSP    	e: signal at shreve.net
> Network Engineer           			p: 318.213.4709
> ShreveNet Inc.             			f: 318.221.6612
> 



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