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Internet Access from Different VLANS on Cat4k-s3

Why would I not be able to get to the Internet from a different VLAN configured on my Cat4k Sup-3? From 2 of the 3 VLAN's, I can get to the Internet, the third I cannot. All of the options are configured the same, as far as I can tell in DHCP and DNS. I get a good address, I can ping my VLANs logical ID's on the cat4k-s3.

Any ideas?

Thanks

2 REPLIES
Cisco Employee

Re: Internet Access from Different VLANS on Cat4k-s3

See if you can do an extending ping from the 4006 to the internet router by sourcing the IP from the VLANs you cannot access internet from. If you cannot , see if you have a routing protocol or a static route configured

Cisco Employee

Re: Internet Access from Different VLANS on Cat4k-s3

See if your firewall or the next hop router knows about the third vlan how to route the packets back to the switch. May be the packets reaching the destination but they are not returning back to the switch.

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