1) Back-to-back serial cables. One end is DTE, the other DCE. The router on
the DCE end provides clocking. Easy way to simulate WAN links.
2) Back to back CSU/DSUs. T-1 uses pins 1&2 and 4&5. Make a custom cable
that swaps 1 to 4, 2 to 5, 4 to 1, and 5 to 2. Configure one CSU to provide
clocking.
56k CSU/DSUs use pins 1&2 and 7&8. Your rolled Cisco console cable will
work.
You've lucked out by having the CSU/DSU WICs. Unless you already have some
spare CSU/DSUs and V.35MT cables it would be easier to buy back-to-back
cables.
> -----Original Message-----
> From: Sean C. [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 09, 2001 8:41 AM
> To: [EMAIL PROTECTED]
> Subject: Back to Back Serials on 2509s [7:3796]
>
>
> Hi Group,
>
> I have 3 2509s, a 2610 (with 2 56k cards and/or 1 T1 card
> and/or 1 serial
> DB-60 card) and a 1603 (with a 56k card and a DB-60 serial)
> and wanted to
> connect them together via their serial interfaces. Would I
> have to use:
>
> 1) A few CSU's (Adtrans probably), connect a 2509 serial to
> a CSU, and then
> connect that CSU to another CSU which goes into the 2nd 2509 serial
> interface (same thing for the second 2509 to the third 2509 -
> effectively
> making the 2nd 2509 a FR switch). Would I use CAT5 crossover
> cables between
> the CSUs (these CSU's use RJ-45 connections)? Then make the
> 2610 another FR
> switch and connect that to both the 3rd 2509 and the 1603.
>
> R1---CSU1==CSU2/1---R2---CSU2/2==CSU3/1---R3---CSU3/2==56k---2
610---56k==56k
> ---1603
>
> 2) Or, use crossover DB-60 cables between the 2509s? A
> DB-60 crossover
> between the 3rd 2509 and the 2610 and a CAT5 crossover from a
> 56k card on
> the 2610 to a 56k card on the 1603? No, that won't work -where's the
> clocking?
>
> Anyway, you can see my dilemna. Appreciate any suggestions.
>
> Thanks,
> Sean C.
> CCNP, CCDP, MCSE
> Email: [EMAIL PROTECTED]
> FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> Report misconduct
> and Nondisclosure violations to [EMAIL PROTECTED]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=4252&t=3796
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
