I believe you can use a 2621XM Cisco router. I believe that it is modular. It should have 2 WIC slots in back of the router that can handle 4 T1 connections ( 2 ports per card). I have used this router in the past for a 3MB connection into a datacenter I was supporting. Although one of the ports on the WIC went bad and we were utilizing one T1 for connectivity for almost 3 months. This is the way you may want to go.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...