HP FlexFabric 11900 Switch Series - HP 11900-CMW710-R2105P05 Release Notes

Restrictions and cautions

1. It takes more than half an hour to collect diagnostic information when the IRF has many

configuration parameters.

2. The hp 11900 product family supports four IRF members. There are several setup and

configuration limitation, please check the Command Line Manual and Operation Manual for

detail.

3. If you enable multicast ARP and connect the device to an NLB server through an aggregate

interface, any port that receives client traffic must not reside on the same card as any member port

of the aggregate interface.

4. NTP multicast mode only supports multicast addresses in 224.0.1.0/24.

Open problems and workarounds

LSD068672

• Symptom: The IRF fabric may split.

• Condition: Reboot an IRF fabric comprised of four switches. If the switches are not synchronously

rebooted.

• Workaround: Make sure the switches have similar card configurations, can back up each other,

and are rebooted at the same time. If the IRF fabric splits, reboot the smallest IRF system so the

switches can join the system to re-form a 4-chassis fabric.

LSV7D001930

• Symptom: After an incompatible ISSU on an IRF fabric that is the root of the TRILL multicast

distribution tree, the TRILL nickname (bridge MAC address) of the IRF fabric is changed but the root

name is not changed to the new name, resulting in a 20-minute interruption of multicast traffic.

• Condition: This symptom occurs after an incompatible ISSU on an IRF fabric that is the root of the

TRILL multicast distribution tree. After the ISSU, the TRILL nickname (bridge MAC address) of the IRF

fabric is changed, but the root name of the TRILL multicast distribution tree is not changed to the new

name.

• Workaround: Before you perform the incompatible ISSU, reduce the root priority for the IRF fabric

to let it become a non-root RB. After the ISSU, increase the root priority for the IRF fabric to become

the root.

LSV7D000346

• Symptom: If PFC is enabled on an IRF port, the IRF fabric might split.

• Condition: This symptom might occur if PFC is enabled on an IRF port.

• Workaround: Do not enable PFC on an IRF port.