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Re: Unable to communicate outside of subnet on VLAN

 
Mike Whorley
Occasional Advisor

Unable to communicate outside of subnet on VLAN

Hi Guys,

I'm new to VLANS but have had to use one for an Ianium Blade server running 11.31.

After much digging i established how to set up the VLAN and have a virtual nic LAN5000. The server can ping other servers, resolve names etc but cannot communicate with any servers on another subnet.

Is there anything specific in the VLAN config i need to do allow traffic to pass to & from other subnets ?

Here's some output that may be out use :-

# nwmgr

Name/ Interface Station Sub- Interface Related
ClassInstance State Address system Type Interface
============== ========= ============== ======== ============== =========
lan2 UP 0x001E0BFCCE02 igelan 1000Base-SX
lan0 UP 0x001E0BFCCE04 igelan 1000Base-SX
lan5000 UP 0x001E0BFCCE04 vlan vlan lan0
lan1 UP 0x001E0BFCCE05 igelan 1000Base-SX
lan3 UP 0x001E0BFCCE03 igelan 1000Base-SX
lan900 DOWN 0x000000000000 hp_apa hp_apa
lan901 DOWN 0x000000000000 hp_apa hp_apa
lan902 DOWN 0x000000000000 hp_apa hp_apa
lan903 DOWN 0x000000000000 hp_apa hp_apa
lan904 DOWN 0x000000000000 hp_apa hp_apa

# ifconfig lan5000
lan5000: flags=4000000000001843
inet 10.2.65.113 netmask fffffc00 broadcast 10.2.67.255

# lanadmin -x 1
Speed = 1000 Full-Duplex.
Autonegotiation = On.

# lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#
0/2/2/0 0x001E0BFCCE02 2 UP lan2 snap2 1 ETHER Yes 119
0/1/1/0 0x001E0BFCCE04 0 UP lan0 snap0 2 ETHER Yes 119
VLAN5000 0x001E0BFCCE04 5000 UP lan5000 snap5000 56 ETHER Yes 119
0/1/1/1 0x001E0BFCCE05 1 UP lan1 snap1 3 ETHER Yes 119
0/2/2/1 0x001E0BFCCE03 3 UP lan3 snap3 4 ETHER Yes 119
LinkAgg0 0x000000000000 900 DOWN lan900 snap900 6 ETHER Yes 119
LinkAgg1 0x000000000000 901 DOWN lan901 snap901 7 ETHER Yes 119
LinkAgg2 0x000000000000 902 DOWN lan902 snap902 8 ETHER Yes 119
LinkAgg3 0x000000000000 903 DOWN lan903 snap903 9 ETHER Yes 119
LinkAgg4 0x000000000000 904 DOWN lan904 snap904 10 ETHER Yes 119

Many thanks
Mike.
3 REPLIES 3
Eric SAUBIGNAC
Honored Contributor

Re: Unable to communicate outside of subnet on VLAN

Bonjour Mike,

what about routing (netstat -rn) ?

Eric
Mike Whorley
Occasional Advisor

Re: Unable to communicate outside of subnet on VLAN

Thanks Eric - I was checking routing myself when your reply came through and I believe you are correct. If looks like the default route I added might be the problem. I've just forced it to be correct in netconf (didn't know how to manually remove a default root) and rebooted so lets see if that does the trick.

Isn't it always the case when you work with a new technology that by default you assume that is where the problems lies...

I'll update when the server comes back if it was routing.

tia,
Mike.
Mike Whorley
Occasional Advisor

Re: Unable to communicate outside of subnet on VLAN

It was a routing problem - thanks for pointing me in the correct direction.