Operating instructions

236 Cisco Systems Intelligent Gigabit Ethernet Switch Module
Figure 9-4 Output of show platform summary command
The sh platform summary command also shows the bay that the switch you are running the
command on is installed in. This can be handy if you suspect someone has misapplied the
switch name or IP address and you are not sure which switch you are logged onto.
Possible issues with Redhat tg3 driver
Several issues have been encountered in the field with using Redhat Linux and its native tg3
driver (tg3 driver is Redhat’s version of driver for the Broadcom NICs on the HS20). Issues
noted involve links to the IGESM from the blade server not coming back up (showing
notconnected with a sh int status command) after an IGESM is reloaded, and link flapping
errors resulting in the port on the IGESM going to the blade server being shut down.
򐂰 If you encounter the port not coming up issue after an IGESM reload, the possible
solutions/workarounds are:
– Solution 1: Use the Broadcom driver available on ibm.com. The actual driver from
Broadcom has proven to be very reliable.
– Solution 2: Obtain a version of the tg3 driver that does not experience this issue. None
is available as of this writing but there may be one at some later date.
– Workaround 1: From the blade server, take the port down and back up (eth0 in this
example) to bring the port back up:
ifconfig eth0 down
ifconfig eth0 up
– Workaround 2: Reload the blade server experiencing this condition.
򐂰 If you encounter the link flapping/port down issue on an IGESM (seen as soon as the
blade server attempts to bring up the link to the IGESM), possible solutions and
workarounds are:
– Solution 1: Use the Broadcom driver available on ibm.com.
The actual driver from Broadcom has proven to be very reliable
– Workaround 1: Obtain a version of the tg3 driver that does not experience this issue.
• One version (as seen with the command dmesg | grep tg3 executed on the Linux
server) that is known to have this problem is tg3.c:v3.10RH (September 14, 2004).
Switch#sh platform summary
Platform Summary:
Switch Slot: 1
Current IP Addr: 172.26.147.208, 255.255.254.0, gw: 172.26.146.1
Default IP Addr: 10.10.10.91, 255.255.255.0, gw: 0.0.0.0
IP Fields read from VPD: 172.26.147.208, 255.255.254.0, gw: 172.26.146.1
Static IP Fields in VPD: 172.26.147.208 255.255.254.0 172.26.146.1
IP Acquisition Method used: static
(“Disabled” will show “user-config” after IGESM reboot)
Active Mgmt Module in Mgmt Slot: 1
Native Vlan for Mgmt Module Ethernet ports: 1
External Mgmt over Extern ports Disabled
•Switch is in Bay 1
•MM advanced I/O module settings