sniffer capturing unicast traffic on port where port mirroring disabled
We have a sniffer plugged into a 10/100 port on a 4006. Port mirroring is not enabled on this port, so we only expect to see broadcast traffic. In addition to BPDUs, ARPs, BOOTPs, etc... we are seeing unicast traffic (http, ldap) between two hosts plugged into other ports on the switch. It's not all the traffic between the two hosts, just a small subset. Why would this traffic show up at all?
[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...