1601 cisco routers subinterface numbers for Frame relay

[tuks]

We use 1601 cisco routers as our frame relay routers. What I want to know is how many sub interfaces I can create for an interfaces.

Hope someone will give me an answer

Regards [sig][/sig]

 

[wybnormal]

This is a loaded question. I've asked several people smarter then I and nobody seems to know for sure. I have one router with 21 subinterfaces on it( not my choice) I wil say this about it, subinterfaces are great BUT!!!! you put all of your eggs in one basket. Whatever impacts one subinterface will surely impact the rest. You also need to be aware of how much oversubscribing you have on the interface as a total. It's possible to kill the interface by forgetting you have a T1 ( 1.54) and adding 5 interfaces each with a CIR of 1.54 You may laugh but I have seen this happen. Any intrusive testing will impact EVERYTHING on the interface.. it's not by frame circuit, it's by physical port. I watched SBC smoke all 17 circuits of mine trying to fix a frame protocol problem. Oops!! One more thing to watch out for is memory. Each subinterface sucks up memory and if you forget on a marginal router, you may get bit.

Mike S
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[jeter]

you can create as many subinterfaces as the DLCI's are required . ( dlci 16,17,18 ect )
Is this for your host are remote locations ? [sig][/sig]

 

[tuks]

jeter,
This is for my host locations. [sig][/sig]

 

[jeter]

depending on the size of the frame-relay you may want to go with another host router
1700 or a 2500 . You will get better performance virsus the 1600 . [sig][/sig]

 

[ariev]

I wouldn't take a 2500 instead of the 1600 - 2500 are very old routers, 2600's are much better - or maybe even you could get a 3620/3640 - they would be upgradable in the future (modular router)

Arie [sig][/sig]

 

[wybnormal]

I have to agree that while the 2500s are dirt cheap, the 2600 offers much more in expandiblity and performance. If I were on a TIGHT budget, then I would look at a used 2500 over the 1600. Of course, the 1605R is a mean little router and I run upwards of 15 users plus their internet connection off it and a frame. Again, know your application and try to predict the future when you install this stuff

Mike S
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