heartbeat help needed

[Jessica P]

Hi

1 can i hav primary data link and heartbeat cable on same LAN/subnet
NODE 1--------primary link-----node2
node1---------heartbeat-------node2
both on the same switch..

does it work

2 can i use crosscable b/w nodes on version 11.16

3 can i hav above scenario but with no ip address configured ie cross cable with no IP


what are the heartbeat options using LAN...

[Stephen Doud]

The data and HB can share the same physical network but don't assign them the same subnet.

Attaching both the primary NIC and standby NIC to the same switch is a single-point of failure.
Crossover cable is supported for HB network.

HB NICs require an IP address - Use any valid IP if you connect them via crossover cable.

Be sure to list the HB NICs in /etc/hosts.\

Suggest you configure something like this:

NETWORK_INTERFACE lan3
HEARTBEAT_IP 16.113.1.214 (data LAN, also configured to carry heartbeat)
NETWORK_INTERFACE lan2
HEARTBEAT_IP 10.10.10.1 (dedicated heartbeat IP)

[Steven E. Protter]

Shalom,

It can work. It merely defeats the purpose of high availability.

SEP

[Thomas J. Harrold]

Interestingly, I found that if you use the same switch, you can only assign ONE standby interface that will act as a standby for BOTH primary and heartbeat LANs.

(this was tested, and seems to work fine)

If you are using one switch, I'd certainly want to use a crossover cable as well.

-tjh