Hi,
this is a bit OT, but definitely cluster-related.
I am looking for a way to test the switch VLAN configuration from my
RHEL5.4 cluster nodes.
The cluster is running Virtual Machines as services, there is a network
bridge for each VLAN configured on the each of the nodes. The cluster
nodes itself have no need to access the VM's VLANs, so the bridges do
not have any IP assigned to it. As the VMs may be migrated between the
nodes, it is crucial that every node may use any required VLAN.
While we do monitor the switch configuration, we came accross a broken
switch, which seemed to work but did not forward some VLANs although the
configuration was correct. I would like the nodes to test whether they
have access to a given VLAN themselves to recognize that situation.
As there are no IPs assigned to the bridges, simple ping-style tests are
not an option. I tried to find something based on arp, but have not been
successful yet.
Any hint is highly appreciated.
best regards, Gunther
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Gunther Schlegel
Manager IT Infrastructure
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