I have a PC that is connected to a port on a 3com hub. The 3com hub is connected to the 3750 (layer 2) with portfast disabled. The 3750 has a management address of 10.19.19.10 and is connected to a 2500 router ethernet interface that has a primary IP(10.19.19.1) and a secondary IP address (10.19.18.1).
When connected in this config I cannot ping the PC (10.19.19.11) from the switch and I cannot ping the switch or router from the PC. I know I must be missing something simple as I have done this before.
[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...