The rule of thumb is that there are 200 routers in an area. Areas with more than 200 routers starts experiecing problems. Also areas with large amount of routers will take longer time for SPF calculations
There is no hard limit--I've seen networks with several hundred routers in a single area, and several thousand routes. It's all going to depend on the processing power of the smallest router in the area, and the memory availablt on the smallest router in the area, along with the work done by the ABR's in translating various packets, etc.
So, basically, there is no limit. Just watch your memory, processors, and spf times, to gauge when "enough is enough."
[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...