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New Member

Multiple T1 Lines

Our company uses Qwest as our VPN WAN provider. We plan to add a second T1 line to qwest at one of our locations. The question is what is the best way to do that? Qwest suggested using a Tasman router to bond the 2 lines but we'd like to stay Cisco. I need to know the minimun router we can use (1700?) and how to set it up. Can you just get a two port T1 card and bond those two ports together? Should we use HSRP and two routers that both connect to Qwest? I think the preferred way (for management) is to have one 3MB pipe. Any suggestions would be greatly appreciated!

Thanks,

Tim

  • Other Network Infrastructure Subjects
11 REPLIES
Silver

Re: Multiple T1 Lines

Tim,

Multilink on the Cisco devices will get you what you need. Pls see the following URL for example config:

http://www.cisco.com/en/US/partner/tech/tk713/tk507/technologies_configuration_example09186a0080093c1d.shtml

Hope this helps,

Don

Cisco Employee

Re: Multiple T1 Lines

You can use 1700 router with WIC-2T card which supports two serial T1 interface. Here is the url for that.

http://www.cisco.com/warp/public/107/wic-2t.shtml

You can bundle those two serial interface togather to get the aggregated thruput.

Here is the link which discuss that

http://www.cisco.com/univercd/cc/td/doc/product/aggr/10000/10ksw/mlppos.htm

New Member

Re: Multiple T1 Lines

Well, I see know how we can get it done, but Qwest has told us they don't support Cisco for bonding lines. That's no good...

Re: Multiple T1 Lines

Perhaps you should play tactics, to get what you want from Qwest. You know what I mean.

New Member

Re: Multiple T1 Lines

Is it possible to set up Multilink between a Cisco Router and Nortel Shasta box?

Or do they just not want to do it?

Cisco Employee

Re: Multiple T1 Lines

YES..it is possible. Multilink PPP is supported by Nortel too. Config on cisco will remain the same.. So you just need to see how can you configure that n Nortel box.

Bronze

Re: Multiple T1 Lines

For something as standardized as Multilink PPP it's hard to imagine Qwest refusing to support such a setup with CPE equipment from the market leader. If this is indeed the case, CEF is probably your next best bet. You can load balance with CEF via per-destination or per-packet -- the latter is only recommended if both of your T1's terminate at the same Qwest router.

Cisco Employee

Re: Multiple T1 Lines

Quest shold not care about where you terminate the line..Am i right?

New Member

Re: Multiple T1 Lines

Forget multilink PPP. CEF is the best way to implement load balancing in my experience. It is much simpler to setup.

Check out

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/switch_c/xcprt2/xcdcefc.htm

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