On Wednesday 28 December 2005 10:25 am, Erik Anderson wrote: > On 12/28/05, Mark J. Kroska <MKroska at kdv.com> wrote: > > Erik-- > > As long as you have enough free interfaces to handle the T-1s you should > > be fine -- conditionally. > > Generally the issue is the amount of RAM needed to do routing long before > > CPU power. > > If you are doing static routing you should be more than fine...you could > > probably have 8 or more T-1s without running low on CPU resources. > > If you were doing dynamic routing the CPU still may not be getting > > hammered, again the RAM would be the limiting factor. (Dynamic routing > > meaning RIP, OSPF, BGP, etc. The more complex the routing tables, the > > more CPU power you need) > > I've successfully run 2 T-1s with a 'light' BGP load with 64MB RAM before > > (in a staging environment), and it barely scratched the CPU, where the > > RAM was nearly fully utilized. > > Out of curiosity, how much RAM does the unit have? What type of > > interfaces will you be terminating with? > > Will any of the T-1s be bonded/multiplexed or channelized? > > > > Another factor to consider if you don't have the interfaces purchased: > > not all T-1 interfaces work with all levels of firmware. I ran into an > > issue with a newer WIC and an older firmware--it wouldn't even detect it! > > Thanks for the info, Mark. In our case, we'll be using one 2651 to > terminate all the T1s, which will then connect to a second 2651 which > will do the routing. For the time being, it's all static routing. You should be fine, however there are circumstances that may arise that could cause you trouble. I have a similar setup (2610XM) and I'm doing BGP and Multilink on. Normally everything is fine, but recently we experienced a DDOS SYN flood attack. My router was swamped, memory useage was fine, but processor useage maxed out due to the large number of packets. Just something to keep in mind. -scheides