Hello,
I'm having some issues understanding why a VLAN isn't working... we use a /20 (172.16.1.0) block for our network and I'm trying to create a /24 (172.16.10.0) VLAN inside the /20. I've created the interface in the router and assigned it to VLAN with a gateway of 172.16.10.254. In the core switch, I've created VAN 10 and tagged port 20 for VLAN 10 (this is the port connected to the router/fw). At this point, I should be able to ping the VLAN gateway from the switch, no? It just times out. If I completely change the network address to something like 192.168.10.0/24 I can ping and everything seems to be fine.
I'm sure I'm overlooking something but why can't I use a network range inside the /20 for the VLAN?
Thanks.
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