Cisco 2960 to HP 2810-48g VLAN Issue

[Paul Achtelik]

We have a Cisco 2960 that our MPLS provider brought in with our new MPLS network.  We are having issues passing our new Data VLAN information across our MPLS network.  We have 14 remote sites that all need to connect back to a new VMware Infrastructure that we are building.  The Cisco is a 24 Port 2960, with the first twelve ports set for our data VLAN 10, Ports 13-24 are setup for our Phone VLAN 100, and our Internet Lag.  Port 12 runs to our new infrastructure switch to supply our VMware servers with network access (2810-24G).  Port 12 on the Cisco runs to Port 21 on the HP. Ports 1-12 on the HP are our Test VMware servers.

Cisco Port 12 config:

!
interface FastEthernet0/12
 switchport access vlan 10
 switchport trunk native vlan 10
 spanning-tree portfast

!
interface Vlan10
 ip address 10.10.20.253 255.255.255.0
 no ip route-cache

!
ip default-gateway 10.10.20.254

HP VLAN 10 Config:

vlan 10
   name "ServerData"
   tagged 1-12,21,24
   exit

My first though it is the "switchport trunk native vlan 10" on the Cisco since our native VLAN is still 1 on the HP.  I am waiting for them to respond to a request to remove that so I can test my theory.  Otherwise I am at a loss, I have not had to deal with HP, Cisco interconnectivity.  Right now we are trying to ping 10.10.20.253 and .254 and have no luck so far.  If you need anymore data let me know.

[Fredrik Lönnman]

Since there are no "switchport mode trunk" command in the Cisco config my bet is that fa0/12 on the 2960 end is an access port and you need to have your vlan 10 untagged on port 21 on your HP.

[Paul Achtelik]

I have tried to set Port 21 to Untagged and no change.

[Fredrik Lönnman]

Ok then you might wanna wait for your provider to help you troubleshoot. But I would leave vlan 10 untagged on port 21 :)

[Paul Achtelik]

Yea it is odd and I am waiting for them, I was hoping to be able to test this before the end of the week. I just removed all VLANs from the HP (only VLAN 1 and 10 remain). VLAN 10 is untagged on all ports except 24 (uplink to our Procurve 2910). Port 21 is still plugged in to port 11 on the Cisco. I still cannot pass any traffic. It is very odd because if I plug directly into the ports on the Cisco I can ping just fine.

[Fredrik Lönnman]

Do you learn any mac adresses on port 21 on the HP 2810?

[Paul Achtelik]

Not to look like too much of a dummy, but how do I verfify that on the 2810?

[Paul Achtelik · Accepted solution]

I feel like an idiot.. For some reason I had spanning tree turned on, once I noticed that and turned it off everything works perfectly.  Thanks for your help.