That command usually shows the portchannel you created (21 in your case) and not all the internal once.
It usually looks some thing like this:
xxxx-Switch(config-if)#do sh etherc s Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use f - failed to allocate aggregator
M - not in use, minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port
Number of channel-groups in use: 1 Number of aggregators: 1
Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 10 Po10(SD) LACP Gi1/0/20(D) Gi1/0/21(D)
Usually that means your port channel configs do not match on each end . Something in your configs on either the cisco or hp do not match. If you are trunking across the channel all your trunking parameters must match. Also when you configure the channel , have them shutdown and then bring your ports up via the port channel SVI doing a no shut. You may have to delete the current ones and recreate them .
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