08-18-2008 06:13 AM - edited 03-03-2019 11:10 PM
Is it possible to bond 4 T1's in a 2811? I heard that I need to go up to a 2821, as the 2811 does not have the horsepower to bundle 4T1's... first I have ever heard of this, and wanted to toss it out there to see if it is a valid statement.
*** I want to use this router to be my internet router, with a 4xT1 multilink. There will be no other services running on this router.
08-18-2008 06:39 AM
You can bundle 4 T1's on a 2811 (we do it).
2811#sh run | i interface | ppp
interface Multilink1
ppp multilink
ppp multilink fragment disable
ppp multilink group 1
interface Serial0/0/0:0
encapsulation ppp
ppp multilink
ppp multilink group 1
interface Serial0/0/1:0
encapsulation ppp
ppp multilink
ppp multilink group 1
interface Serial0/1/0:0
encapsulation ppp
ppp multilink
ppp multilink group 1
interface Serial0/1/1:0
encapsulation ppp
ppp multilink
ppp multilink group 1
Hope that helps.
08-18-2008 06:41 AM
Thanks for the response... you don't run into any throughput issues at all do you?
08-18-2008 06:45 AM
Nope, a 2811 can easily handle 4 T1's.
08-18-2008 06:55 AM
I had a number of them running 4xt1 with mlppp and they went to 6m without issue. Many of these were then upgraded to a DS3 and are still doing fine but they have not exceeded 15m yet.
I even have a 2811 with 4xt1 mlpp and 4 more point to point t1 and a fractional ds3. This one the cpu gets to 70% everyday. One day maybe we can replace this with the correct routers
08-21-2008 05:53 AM
Does this run over the standard T-1 interface cards? (WIC-1DSU-T1-V2) We are looking into using a dedicated point-to-point using MLPPP for to a remote location for linking two SANs together. I am trying to figure out the hardware neede to suport this as I have never worked with MLPPP.
Brent
08-24-2008 03:57 AM
hi Bberry,
if you go with WIC-1DSU-T1-V2 --> u must buy 4 numbers ( would be expensive )
But advantage is if one of the WAN module going faulty only 1.5MB will be down.
or
you can even go with
VWIC2-2MFT-T1/E1 WAN Card --> only to numbers require
and still you will have to slots free in you router for furter expansion
hope this may help you ...
Regards
Srini
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