There is no need to worry about the counter "dmamacmismatch". It does not count an error of any kind. This counter is used to keep track of CDP packets.
The dmaMacMismatch counter is not a failure nor cause for concern. The DMA Mac mismatch counter is used to track the CDP frames that are being received by that port. It is one way of identifying the frames destined to a specific multicast address 01-00-0c-cc-cc-cc. This counter is used only for internal debug purposes.
[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...