[c-nsp] 3560 problem / strange !

Łukasz Bromirski lukasz at bromirski.net
Mon Feb 20 17:32:21 EST 2006

Liviu Pislaru wrote:
> i've put IOS c3560-advipservicesk9-mz.122-25.SEE but the problem is still 
> there; after a few more tests i've realize that only subnets from range 
> are afected. did anybody heard about this behaviour of cisco 
> 3560G-24TS switch ?

Logical would be, if 3560 is based on the same hardware as 3750 is,
to troubleshoot it a little further if 3750 works.

How did You narrow it to 208/4 causing problems?

Can You make sure proper MAC addresses are known to switch for
hosts it should route to via SVIs? ('sh mac-address-table dynamic')?
And also, if switch will show proper outgoing interface when You do
for given MAC:

show platform forward INPUT_INTERFACE SRC_MAC DST_MAC

Are there any fails when You print out the `sh ip cef tree' and
correct interface is given in the output of
`show ip cef IP_OF_THE_HOST_YOU_CANT_REACH detail'?

Of course, the ACLs or QoS may cause the problem - are You using them?
Looking on a output of `show controllers cpu-interface' and
`sho platform ip unicast failed adjacency' may also prove useful.

this space was intentionally left blank    |            Łukasz Bromirski
you can insert your favourite quote here   |        lukasz:bromirski,net

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