>Hi Group, > >I have a client who needs 188 T1 (all 1.544Mb serial lines) terminations >to be done on the central site. >Network is hub and spoke fashion. >Pls advise the suitable Cisco router/routers on the central site, for >this purpose.
I'm really puzzled what problem they are trying to solve. Certainly, the carrier providing the local loop has these DS1's multiplexed onto faster internal faciliies (e.g., 28 per DS-3, 84 or so on an OC-3, 168 or so on an OC-12). I've had a situation where I had numbers approaching these, and indeed a fair number were not conventional data but POTS, videoconferencing, bulk crypto, etc. The answer was to put a fully redundant Stratacom switch in front of the routers, PBX, etc., and have (in my case) two redundant OC-3's coming into the switch. Since there are now CBR cards for some routers, the switch might no longer be necessary. The question still comes up is whether the 188 DS-1s truly need separate interfaces at the hub, and why. This sort of port density is going to eat you alive if it's a real requirement. If I had to do it, though, I'd certainly try for a hierarchy of routers -- 7500's or better taking high speed trunks, and connecting via Fast Ethernet to 3600's or such with lots of T1 interfaces. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=48033&t=47944 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
