Thanks for your reply. I am working in data centre. When we provide our feed to client, we should have port security on our end site. My question is about concept that why it is not good idea to have port security max mac address 1. I hope this can clear my scenario.
Unless you want to be in a world of constant pain, "port security max mac address <NUMBER>" is recommended configuration on access port only. You'd have to be totally cr@zy to stick this command on an 802.1q trunk port.
I won't spoon-feed you the answer (as I want to let you drive to the conclusion yourself), but if you are in a DC, how many times have you seen a server (configured properly or not) with only one MAC address? How many have you seen servers with two or more MAC address?
[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...