When you try to connect via Port Channeling Catalyst and HPE switches you should choose the same Link Aggregation protocol. HPE speak LACP, Cisco as a native language speaks PAGP but gets along well with LACP.
To activate LACP under Cisco interface you have to usechannel-group [n] mode active command. HPE use instead link-aggregation mode dynamic under Bridge-Aggregation interface.
# Cisco
# PortChannel Conf
#
interface Port-channel9
description LACP to HPE
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,30,40
switchport mode trunk
spanning-tree bpdufilter enable
#
# interfaces Conf
#
interface GigabitEthernet1/0/9
description LINK Port-channel9 to HPE
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,20,30,40
switchport mode trunk
channel-group 9 mode active
#
# HPE
# Bridge-Aggregation Conf
#
interface Bridge-Aggregation9
description LACP to CISCO
port link-type trunk
port trunk permit vlan 10,20,30,40
link-aggregation mode dynamic
stp edged-port
mad enable
#
# interfaces Conf
#
interface GigabitEthernet2/0/9
description LINK Bri-Aggr.9 to CISCO
port link-type trunk
port trunk permit vlan 10,20,30,40
stp edged-port
port link-aggregation group 9
bye!
.glitchlist crew