I was asked a question concerning an error that is very common when you configure a 255.255.255.252 subnet on a frame-relay subinterface? The error was something about invalid/bad ip address, the interviewer wanted me to tell him how to prevent this. I believe he was looking for a specific command!
There has to be more to the scenario for there to be a problem. In general a mask of 255.255.255.252 means that you can have 2 host addresses off the network, which is fine. If the host or network addresses happen to overlap some other interface, then there would be a problem and an error would be generated. But otherwise, using this mask with no other information as to what may conflict should be fine.
[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...