In connecting two devices with link aggregates, they need to support the same protocol. The IEEE standard is LACP (Link Aggregation Control Protocol). There are already a number of articles in configuring link aggregation for Cisco and HP Comware. I will only share the key points in this article.
HP Comware Bridge Aggregation supports LACP. To enable LACP, execute these commands on the Bridge-Aggregate interface with mode dynamic.
interface Bridge-Aggregation <X>
link-aggregation mode dynamic
Cisco EtherChannel support LACP and its proprietary PAgP. To enable LACP, execute these commands to each EtherChannel member interface with mode active.
interface GigabitEthernet <X/X/X>
channel-group <etherchannel_group> mode active
For more detailed discussion on configuring HP Comware Bridge Aggregatation, refer to this link. With Cisco EtherChannel, these are not difficult to find.