Most switches are Cat 3524xl/48xl but I've some old catalyst c2924xl w/4Mb upgraded to original edition software Release 11.2(8.10)SA6 . According to Release Notes for Release 11.2(8.10)SA6 it is suposed to support trunking 802.1q, but when i tried to configure it:
switchport trunk encap dot1q
switchport mode trunk
it was imposible. Does any of you configured 802.1q trunks on a cat c2924xl?
The configuration notes for trunking mention that only a limited set of interface modules support trunking on 4meg 2900XL series switches. It seems likely that the interface you're trying to configure the trunk on simply does not support it.
[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...