the 7206 is has reached its end of sale, and might not get support in future.. The VXR has a faster bus and will take faster processors - with a non-VXR you are extremely limited as you will struggle increasingly to get bugfixed software as the chassis is no longer officially supported. You're also limited to processing engines that won't take enough RAM for a full internet routing table for much longer.
since it is going to be only for the lab, you can opt for either of these, but if they are of the same price, i would definitely go for a vxr model !!!!
hope this helps.. all the best.. rate replies if found useful..
[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...