Managing Serviceguard Eighteenth Edition, September 2010

local switching may occur, that is, a switch to a standby LAN card if one has been
configured; see “Local Switching ” (page 93).
The following examples show when and how a link-level failure is differentiated from
an IP-level failure in the output of cmviewcl (1m).
As you can see, if local switching is configured, the difference is the keyword disabled,
which appears in the tabular output, and is set to true in the line output, if the IP
Monitor detects the failure. If local switching is not configured, the output is the same
whether link-level or IP monitoring detects the failure.
Example 1: If Local Switching is Configured
If local switching is configured and a failure is detected by link-level monitoring, output
from cmviewcl -v will look like something like this:
Network_Parameters:
INTERFACE STATUS PATH NAME
PRIMARY down (Link and IP) 0/3/1/0 lan2
PRIMARY up 0/5/1/0 lan3
cmviewcl -v -f line will report the same failure like this:
node:gary|interface:lan2|status=down
node:gary|interface:lan2|local_switch_peer=lan1
node:gary|interface:lan2|disabled=false
node:gary|interface:lan2|failure_type=link+ip
But if the IP Monitor detects the failure (and link-level monitoring does not) cmviewcl
-v output will look something like this:
Network_Parameters:
INTERFACE STATUS PATH NAME
PRIMARY down (disabled) (IP only) 0/3/1/0 lan2
PRIMARY up 0/5/1/0 lan3
cmviewcl -v -f line will report the same failure like this:
node:gary|interface:lan2|status=down
node:gary|interface:lan2|local_switch_peer=lan1
node:gary|interface:lan2|disabled=true
node:gary|interface:lan2|failure_type=ip_only
In this case, you would need to re-enable the primary interface on each node after the
link is repaired, using cmmodnet (1m); for example:
cmmodnet —e lan2
Example 2: If There Is No Local Switching
If local switching is not configured and a failure is detected by link-level monitoring,
output from cmviewcl -v will look like something like this:
Network_Parameters:
INTERFACE STATUS PATH NAME
PRIMARY down (Link and IP) 0/3/1/0 lan2
PRIMARY up 0/5/1/0 lan3
102 Understanding Serviceguard Software Components