8Mb is the Max you can have on an XL switch and is suffient for latest IOS. Can you let us know what exact message the switch displayed when you tried to upgrade. Did you try to upgrade to 12.0(5)WC5? Also paste the output of show version
This release is not for the Catalyst 2900 XL 4-MB switches. The 4-MB models are WS-C2908-XL, WS-C2916M-XL, WS-C2924C-XL, and WS-C2924-XL. These switches can only be upgraded up to Release 11.2(8.10)SA6. To be cluster members, these switches must run Release 11.2(8.x)SA6 original edition software. To determine the switch DRAM size, enter the show version user EXEC command
[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...