Switch VLAN Issue

Unanswered Question
Jul 30th, 2008

Sometimes some XP clients on VLAN1 cannot ping clients on VLAN2 and vice versa. When it occurs it can last up to about 10 minutes before it rectifies itself. VLAN's can ping all the clients in their own VLAN at that time also, but not the other VLAN. Can anyone please help me troubleshoot this issue?

config is as shown below and diagram is as attached.

ip routing

vlan 1


untagged A13-A24

ip address

no untagged A1-A12


vlan 2

name "VLAN2"

untagged A1-A12

ip address


I have this problem too.
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Giuseppe Larosa Wed, 07/30/2008 - 08:44

Hello sushil,

what model is your multilayer switch ?

verify if you have EMI or SMI IOS image

I would suggest to verify network mask settings on clients and ip proxy-arp settings on switch with sh ip int vlan1, sh ip int vlan2

Hope to help



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