HP V1910 Switches - VLAN across multiple switches

Posted on 2014-09-03
Last Modified: 2014-09-14
I have 2 HP V1910G switches and I have setup two VLANs on both.

SW1: downstairs - VLAN 1 IP, VLAN 2 IP
SW2: upstairs - VLAN 1 IP, VLAN 2 IP
Router X0 (normal LAN gateway)
Router X3 (accounting dept gateway)

VLAN 1 (default VLAN): normal LAN, 10.1.x.x subnets
VLAN 2: accounting department, 192.168.2.x subnet

The VLANs all work perfectly fine within the same switch.  But I am having trouble getting the traffic to go from one switch to the other.

Everything works fine on VLAN 1 (default) between the two switches and all the traffic can reach the router.  This was basically plug and play.

For VLAN 2, on the SW1 I can ping the router from the switch and the switch from the router, but I cannot ping SW2 or the client PC.

On the SW2 I can ping the client PC from the switch and the switch from the client PC, but I cannot ping SW1 or the router.

Here are the port configs:

SW1 port 2 (physical connection to router)
Type: Access
Untagged Membership: VLAN 2

SW1 port 47 (physical connection to SW2)
Type: Hybrid
Untagged Membership: VLAN 1
Tagged Membership:  VLAN 2

SW2 port 47 (physical connection to SW1)
Type: Hybrid
Untagged Membership: VLAN 1
Tagged Membership:  VLAN 2

SW2 port 45 (physical connection to client PC)
Type: Access
Untagged Membership: VLAN 2

What piece of the configuration am I missing in order to get the traffic on VLAN 2 to pass between the two switches?  I have been working at this for 2-3 days and have exhausted my own limited knowledge.

What other information do you need from me?

Thank you.
Question by:yuggol
  • 3

Expert Comment

ID: 40301334
For VLAN2 what's your subnet masking? Check the masking and TCP/IP settings again. Post them if you can.

Telnet into SW1 and SW2 and do the command:

show mac-address port 47

(I think that's the syntax) which should show you the connected devices with learned MAC addresses, just in case you have some IP issue. Your tagging looks correct at first glance.


Author Comment

ID: 40301416

VLAN2 subnet masking is as follows:

On SW1, mask
On SW2, mask
On router X3, mask
On client PC, mask

When I telnet into the switches to run that command, I can't get anywhere:
<stack_0.SW1>show mac-address port 47
 % Unrecognized command found at '^' position.

Open in new window

I assume this shows the same thing as ARP Management in the GUI.  Here are the results - as you can see there is nothing on VLAN 2 at all.

From SW1

IP ADDRESS     MAC Address         VLAN   PORT                            Type              0026-736d-67cb      1      GigabitEthernet1/0/47      Dynamic      4431-9259-2079      1      GigabitEthernet1/0/47      Dynamic      4431-9253-b617      1      GigabitEthernet1/0/47      Dynamic              68b5-99ef-d039      1      GigabitEthernet1/0/47      Dynamic              6431-5037-307d      1      GigabitEthernet1/0/47      Dynamic              d8d1-cb85-ac61      1      GigabitEthernet1/0/47      Dynamic              6431-5037-3072      1      GigabitEthernet1/0/47      Dynamic         6431-5037-30e2      1      GigabitEthernet1/0/47      Dynamic       6431-50a3-88f0      1      GigabitEthernet1/0/47      Dynamic       7446-a0b4-3e6d      1      GigabitEthernet1/0/47      Dynamic              9c04-ebaf-f1f4      1      GigabitEthernet1/0/47      Dynamic              0021-5c2b-2569      1      GigabitEthernet1/0/47      Dynamic              b034-9520-2167      1      GigabitEthernet1/0/47      Dynamic              6431-5037-6728      1      GigabitEthernet1/0/47      Dynamic              7446-a0be-08be      1      GigabitEthernet1/0/47      Dynamic              9cb6-549f-537d      1      GigabitEthernet1/0/47      Dynamic              000f-fec7-a28f      1      GigabitEthernet1/0/47      Dynamic              001b-0031-e6ce      1      GigabitEthernet1/0/47      Dynamic              e411-5b56-b0f4      1      GigabitEthernet1/0/47      Dynamic              6431-50a3-f634      1      GigabitEthernet1/0/47      Dynamic              2c44-fd1a-efc9      1      GigabitEthernet1/0/47      Dynamic         a0d3-c19c-a458      1      GigabitEthernet1/0/47      Dynamic              7446-a0be-0871      1      GigabitEthernet1/0/47      Dynamic              8000-6edd-c7f0      1      GigabitEthernet1/0/47      Dynamic              c4d9-8798-c966      1      GigabitEthernet1/0/47      Dynamic              8000-6eaa-d07a      1      GigabitEthernet1/0/47      Dynamic              2cb4-3a74-38e5      1      GigabitEthernet1/0/47      Dynamic              6431-5037-307c      1      GigabitEthernet1/0/47      Dynamic              a0ed-cdbf-1743      1      GigabitEthernet1/0/47      Dynamic              68b5-99f1-cf99      1      GigabitEthernet1/0/47      Dynamic              b4f0-ab7f-b5d9      1      GigabitEthernet1/0/47      Dynamic              2cbe-0815-dec5      1      GigabitEthernet1/0/47      Dynamic              1499-e259-f9cf      1      GigabitEthernet1/0/47      Dynamic          000f-fec7-a167      1      GigabitEthernet1/0/47      Dynamic              5c8d-4e65-f9b9      1      GigabitEthernet1/0/47      Dynamic      6431-5037-2fd3      1      GigabitEthernet1/0/47      Dynamic      000f-fec7-a295      1      GigabitEthernet1/0/47      Dynamic      000f-fefc-e29e      1      GigabitEthernet1/0/47      Dynamic      6c62-6de4-9bab      1      GigabitEthernet1/0/47      Dynamic      a886-dd55-a778      1      GigabitEthernet1/0/47      Dynamic      8c29-3709-571f      1      GigabitEthernet1/0/47      Dynamic

From SW2

IP ADDRESS     MAC Address         VLAN   PORT                            Type              d8d1-cb85-ac61      1      GigabitEthernet1/0/47      Dynamic              9c04-ebaf-f1f4      1      GigabitEthernet1/0/47      Dynamic              b034-9520-2167      1      GigabitEthernet1/0/47      Dynamic              8000-6edd-c7f0      1      GigabitEthernet1/0/47      Dynamic              e48b-7fc3-aa8d      1      GigabitEthernet1/0/47      Dynamic              2cb4-3a74-38e5      1      GigabitEthernet1/0/47      Dynamic              b4f0-ab7f-b5d9      1      GigabitEthernet1/0/47      Dynamic      a886-dd55-a778      1      GigabitEthernet1/0/47


Accepted Solution

yuggol earned 0 total points
ID: 40311867
Problem is solved.  It had nothing to do with the switches' config - it was a simple cabling issue.
Actually it was the lack of documentation by those who installed the wiring in this building.  We had SW2 port 47 connected to the port in the patch panel which we THOUGHT was the physical connection to SW1 downstairs.  Turns out it wasn't at all; the actual run was punched to port 11, not port 48 so that's why VLAN1 would pass through but not any of the other VLANs.

Author Closing Comment

ID: 40321523
Self solved

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