VLAN Configuration

[SVSWayneT]

Evening... now bear with me while I try and explain the problem!

We have 2 HP ProCurve 2910al-48G switches (Sender for ease), connected via CX4 cable at the back.  We are trying to connect the Sender switches to 2x HP ProCurve 2910al-24G switches (receiver) via a fibre cable. 

The fibre cable from the sender terminates in the comms rack. 

The receiver is connected to a fibre connection that terminates in the same comms rack. 

The 2 connections are connected with an ST to ST fibre patch cable.

The idea is that we have one part of a SAN connected to the sender switches and one SAN on the receiver switches and create an iSCSI network over the fibre.

I have created a vlan on the sender switches, vlan 10 and have ports 1-30 & 48 untagged.  I have A1 (CX4) tagged and jumbo frames switched on.  Port 48 has the SFP connected.  This vlan is replicated to the second of the sender switches.

I have also created a vlan on the receiver switches, again vlan 10 and have ports 1-22 & 24 untagged.  I have A1 (CX4) tagged and jumbo frames switched on.  Port 24 has the SFP connected.  This vlan is also replicated to the second switch.

It looks like the vlan is configured correctly but when we try and ping the SAN at the receiver end we get no reply. 

We have broken into the network at the comms cab with a PowerConnect 2824 and we can ping the SANs at both the sender and receiver ends but with the ST Patch connecting the 2 connections nothing seems to get through.  The ST Patch cable is brand new (62.5/125).  I have also tried another brand new patch cable (again 62.5/125) and nothing seems to be talking.

Can anyone think of anything else we are missing here?

If you want the full configuation of the switches, I have attached them.

[Peter_Debruyne]

Hi,

let's start with the basics, so check L1:

# verify if link is UP (for the interconnect links), do this on both sides

show int x

# verify if switches see each other, verify the remote port in the output, do this on both sides

show lldp info remote

# verify if any link-aggregation is done (based on your input, there should be no trunks)

show trunk

# verify the vlan port configuration, verify these lists on both sides

show vlan port a1 detail

show vlan port 24 detail

# verify if spanning tree is involved, check status (blocking/forwarding) of both sides

show span

# last, verify mac/IP info, note a MAC-address of side left(sender), lookup this mac on both sides, check if the reported port matches the expected port

show mac-address

# extra test : introduce a (test) IP address on the switches for the vlan, try to ping from the switch to the test hosts

vlan 10

 ip adress x.x.x.x/x

ping x.x.x.y

show arp

show mac-address

If you can report the status of these tests, it would be helpfull,

Best regards,Peter

[SVSWayneT]

Thanks Peter

I have managed to resolve the issue now.... too many management network cables connected!

Thanks again.