The command "logging synchronous" is a useful when you are receiving console messages while you are entering EXEC or privilege level commands. Without "logging synchronous" enables the test of the commands you are typing gets lost in the console message. However when "logging synchronous" is enabled, then the command you were typing will be displayed on a new line after the console messages is displayed. I makes configuration a whole lot easier, so I would normally configure "logging synchronous" on the console and VTY lines on all my routers & switches.
[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...