HP 2910AL User Manual
Page 304
Port Trunking
Trunk Group Operation Using LACP
Blocked Ports with Older Devices.
Some older devices are limited to four
ports in a trunk. When eight LACP-enabled ports are connected to one of these
older devices, four ports connect, but the other four ports are blocked. The
LACP status of the blocked ports is shown as “Failure”.
If one of the other ports becomes disabled, a blocked port will replace it (Port
Status becomes “Up”). When the other port becomes active again, the replace
ment port goes back to blocked (Port Status is “Blocked”). It can take a few
seconds for the switch to discover the current status of the ports.
ProCurve(eth-B1-B8)# show lacp
LACP
PORT LACP TRUNK
PORT
LACP LACP
NUMB ENABLED GROUP
STATUS PARTNER STATUS
---- ------- ------- ------- ------- -------
B1 Active Dyn1
Up
Yes Success
B2 Active Dyn1
Up
Yes Success
B3 Active Dyn1
Up
Yes Success
B4 Active Dyn1
Up
Yes Success
B5 Active Dyn1
Blocked
Yes Failure
B6 Active Dyn1
Blocked
Yes Failure
B7 Active B7
Down
No
Success
B8 Active B8
Down
No
Success
Figure 12-11. Blocked Ports with LACP
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