VLAN Tagging with HP 2848 Procurve Layer 3 switch

[chieftan]

I have a problem (NOOO).

Here is the set up. 4 switches (HP 6108's) on one VLAN and 4 switches (HP 6108's) on the other VLAN. These are directly connected to the Procurve 2848. Port 8 on all of the 6108's are set to be 802.1q tagged (so that both VLANs can communicate) and also the corresponding ports on the 2848 are also set to be 802.1q tagged.
All other 7 ports on the 6108's are set to Untagged (as required when only 1 VLAN is present).
Hypothetical IP addresses.
VLAN 1 - 192.168.11.0 255.255.255.0
VLAN 2 - 192.168.250.0 255.255.255.0

When I connect a PC to the VLAN 1, I can ping the 6108 and the VLAN 1 address on the 2848. When I connect a PC directly to the 2848 and give it a VLAN 2 address and connect to the correct VLAN 2 port I can ping from the switch (2848) to the VLAN 1 PC, but when I try and ping from the VLAN 2 PC it does not respond.
I can, however ping the VLAN 1 address on the main 2848 switch.... (Very weird)...so, I think the problem is to do with the settings on the ports on the main switch, but I have tried everything and it just wont work.
I have tried changing all ports to Tagged and then untagged.
As it is the main switch that is the problem I have now connecte one laptop to VLAN 1 on the main switch and one laptop to VLAN 2 and the same problem occurs.
Has anyone seen this problem before.

 

[chieftan]

I have solved this problem, but there is one more very easy question that I am sure someone could answer:-

What is the problem when I try to add a route and the error says:

Cannot be Switch address and Gateway.

This is the VLAN address. If I use any other address how will the switch know about the network:-

Command used

ip route x.x.x.x x.x.x.x gateway address

 

[sbrookjr]

You can't setup that route because the switch is already part of that network.

Think of this way. You have a pc with the following setup:

IP: 192.168.1.1
Mask: 255.255.255.0.

Now that pc should be able to communicate with any pc that is using this setup:

ip: 192.168.1.2 - 192.168.1.254
Mask 255.255.255.0.

You wouldn't need to use a gateway for 192.168.1.1 to communicate with 192.168.1.2 because they a part of same network.