Installation guide

A Sample VLAN Topology
A Sample VLAN Topology
Chapter 7
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NOTE The IP address for eth1 is the same on both ShMMs. Each ShMM resides in a private
network that is created by the opposite side Ethernet Switch Blade.
Step 2. In the /etc/shelfman.conf file of both ShMMs, change the value of the following variables as
shown:
SWITCH_OVER_TIMEOUT_ON_BROKEN_LINK needs to be set to a value of 120 or above. This numeric
value is the number of seconds that will lapse between when eth0 on the ShMM is detected as down
and when the active ShMM performs a failover to the backup ShMM. The value should be at least
longer that it takes to reboot an Ethernet Switch Blade, otherwise rebooting a Switch Blade can
cause the ShMMs to failover. Enter your value as follows: SWITCHOVER_TIMEOUT_ON_BROKEN_LINK
= 120
RMCP_NET_ADAPTER2 needs to be set to a non-interface name, since you are controlling both network
interfaces of the ShMM directly. By default, RMCP_NET_ADAPTER2 is set to eth1, which, under
certain ShMM failure modes, causes the IP address of eth0 to be re-instantiated on eth1. In order to
prevent this behavior, which is incompatible with your sample network topology, change the value
to: RMCP_NET_ADAPTER2 = “noeth”
Step 3. After making the above configuration changes, reboot both ShMMs.
IMPORTANT These configuration changes will have to be repeated when any of the following occur:
• A ShMM is replaced
• The ShMM firmware is updated
• The ShMM is reset to factory default settings
Configuring the Ethernet Switch Blade
To configure the base and fabric switch functions of an Ethernet Switch Blade, connect your terminal or
laptop computer to the base and fabric serial ports (one port at a time) of a Switch Blade. The Ethernet
Switch Blade serial ports (RJ-45 connectors) are mounted on the Ethernet Switch Blade front panel, as shown
in Figure 7-7 and Figure 7-8 on page 70.