Question about Transmit B2B Credits

[joe08091977]

Hi all,

we have some HP Virtual Connect Fibre Channel Modules which are connected to MDS 9124 Switches.

The Virtual Connect Modules have 8 Buffer Credits per Port.

The output of "sho interface counters" for the ports connected to the VC´s displays:

16 receive B2B credit remaining
16 transmit B2B credit remaining
16 low priority transmit B2B credit remaining

fc1/15 is up

Transmit B2B Credit is 16
Receive B2B Credit is 16

16 receive B2B credit remainin

16 transmit B2B credit remaining
16 low priority transmit B2B credit remaining

If I understand correctly the buffer credits are communicated at flogi to the switch.

So if the VC-Modules have 8 Buffers, the Switch should display 8 transmit B2B credits  ? Right ?

Thanks for help !!

[Roman Rodichev]

Number of credits should depend on the receive frame size. If let's say you double the frame size setting, the receive B2B credit should half.