06-21-2010 08:51 AM - edited 03-06-2019 11:40 AM
I have a Cisco 3560G switch.
Currently we have a 10.1.2.x subnet that is present on vlan 10.
I want to add a 10.1.3.x subnet and dhcp for it and place it on vlan 3 (if possible)
I'm not sure how to go about this, I've created the vlan, but I can't get it to route correctly because I can't tell the switch look at itself as the route...
I've tried adding a secondary interface on vlan 10 with a 10.1.3.1 address but then there's no way for the dhcp server to know the client requesting needs a 10.1.3.x address is there?
Do I need another switch or router or something to get this to work correctly?
06-21-2010 09:02 AM
If you just want to add another subnet just make sure ip routing is turned on for the 3560 . then the following
conf t
vlan 3
exit
int vlan 3
ip address
Port config
int gx/x
switchport
switchport mode access
switchport access vlan 3
switchport host
06-21-2010 09:14 AM
yes, actually i did that.
I added vlan 3,
assigned it an address
made that address the default gateway in dhcp
and assigned an ip-helper address to vlan3 that points to my dhcp server on vlan 10
everything works as far as getting an address and I can browse local things, but it seems I have some kind of DNS issue...like I can't get to google.com..
I can do an NSlookup and the server returns the addresses but I can't browse to it for some reason..still looking into it.
06-21-2010 09:17 AM
Yeah that doesn't sound like a switch issue .
06-21-2010 10:06 AM
Yeah, it was a firewall issue, so it's not my problem anymore! haha...thought I was losing my mind there for a while.
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