topic Re: VLAN support in Operating System - Linux

VLAN support

Informatikai Tanszekcso — Wed, 30 Mar 2005 06:53:10 GMT

Hi all!

Are VLAN interfaces supported in SG for Linux? On this forum I found examples for HP/UX, but not any for Linux.

I try to provide services for two subnets via SG, but I can't get it work:

Error: Network interface bond0.3 cannot be found on node node1
Error: Network interface bond0.3 cannot be found on node node2

Here's my cluster conf:

NODE_NAME node1
NETWORK_INTERFACE bond0.2
HEARTBEAT_IP 160.11.7.219
NETWORK_INTERFACE bond0.3
STATIONARY_IP 160.11.5.236
CLUSTER_LOCK_LUN /dev/cciss/c0d0p4

NODE_NAME node2
NETWORK_INTERFACE bond0.2
HEARTBEAT_IP 160.11.7.220
NETWORK_INTERFACE bond0.3
STATIONARY_IP 160.11.5.237
CLUSTER_LOCK_LUN /dev/cciss/c0d0p4

The interfaces are working, can ping each other.

Reading a previous thread I learnt that I can't make heartbeat IPs on VLANs, but this would be only a service IP. Is this possible?

Krisztian

Re: VLAN support

Chakravarthi — Wed, 30 Mar 2005 08:04:05 GMT

I guess it is supported,

please check the following document

http://docs.hp.com/en/B8325-90026/ch01s02.html

Re: VLAN support

Chakravarthi — Wed, 30 Mar 2005 08:08:16 GMT

hi krisztian,

please ignore my previous response.

check the following link

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=837221

regards
chakri

Re: VLAN support

Informatikai Tanszekcso — Wed, 30 Mar 2005 08:24:15 GMT

Thanks, I've read this thread. But they were talking about heartbeat interfaces. I just have to run services for different subnets, and I have two NICs. I can't see why would this be a problem. I tried to "strace" cmcheckconf, without success.
For sake of redundancy I made a bonding interface, as it is recommended in docs.

Re: VLAN support

Serviceguard for Linux — Wed, 30 Mar 2005 23:25:24 GMT

I haven't talked to the engineer responsible for this area, but as I understand it the way the subnets are monitored, there cannot be two subnets on one interface today on Linux. The details of how Linux and HP-UX deal with networking are different in this area.

It is better to bond for HA and have package and heartbeat traffic go over the bonded NICs. If there is a NIC failure, you are still protected. The real problem you would have to watch out for in this case is a heavily utilized network that might delay heartbeats.

Re: VLAN support

Informatikai Tanszekcso — Thu, 02 Jun 2005 03:50:00 GMT

As you made clear for me VLAN is not supported in SG Linux. Looking forward the fix ;-)

Thanks for all the replies.

Krisztian