HP A5500-24G-4SFP Bridge-Aggregation LACP

[hpmas]

Hello ,

I have packet loss when I enable link aggrigation on HP switch .

4 switches that connected via two stacks .

when i shutdown one of the links , i do not have any packet loss and internet works fine .

this is my configuration on first stack:

<CORE01>display current-configuration interface Bridge-Aggregation 10
#
interface Bridge-Aggregation10
 port link-type trunk
 port trunk permit vlan all
 link-aggregation mode dynamic
#
return

<CORE01>display current-configuration interface GigabitEthernet 1/0/4
#
interface GigabitEthernet1/0/4
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan all
 lacp period short
 port link-aggregation group 10
#
return

<CORE01>display current-configuration interface GigabitEthernet 2/0/4
#
interface GigabitEthernet2/0/4
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan all
 lacp period short
 port link-aggregation group 10
#
return

this is my configuration on second stack:

<Core-SW>display current-configuration interface Bridge-Aggregation 10
#
interface Bridge-Aggregation10
 port link-type trunk
 port trunk permit vlan all
 link-aggregation mode dynamic
#
return

<Core-SW>display current-configuration interface GigabitEthernet 1/0/42
#
interface GigabitEthernet1/0/42
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan all
 lacp period short
 port link-aggregation group 10
#
return

<Core-SW>display current-configuration interface GigabitEthernet 2/0/42
#
interface GigabitEthernet2/0/42
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan all
 lacp period short
 port link-aggregation group 10
#
return

what might be the problem ?

[hpmas]

First stack:

[CORE01]display link-aggregation verbose Bridge-Aggregation 10
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port Status: S -- Selected, U -- Unselected
Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
        D -- Synchronization, E -- Collecting, F -- Distributing,
        G -- Defaulted, H -- Expired

Aggregation Interface: Bridge-Aggregation10
Aggregation Mode: Dynamic
Loadsharing Type: Shar
System ID: 0x8000, 4431-9233-c64e
Local:
  Port             Status  Priority Oper-Key  Flag
--------------------------------------------------------------------------------
  GE1/0/4          S       32768    1         {ABCDEF}
  GE2/0/4          S       32768    1         {ABCDEF}
Remote:
  Actor            Partner Priority Oper-Key  SystemID               Flag
--------------------------------------------------------------------------------
  GE1/0/4          100     32768    6         0x8000, 4431-9236-5e51 {ABCDEF}
  GE2/0/4          42      32768    6         0x8000, 4431-9236-5e51 {ABCDEF}



Second stack:
<Core-SW>display link-aggregation verbose Bridge-Aggregation 10
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port Status: S -- Selected, U -- Unselected
Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
        D -- Synchronization, E -- Collecting, F -- Distributing,
        G -- Defaulted, H -- Expired

Aggregation Interface: Bridge-Aggregation10
Aggregation Mode: Dynamic
Loadsharing Type: Shar
System ID: 0x8000, 4431-9236-5e51
Local:
  Port             Status  Priority Oper-Key  Flag
--------------------------------------------------------------------------------
  GE1/0/42         S       32768    6         {ABCDEF}
  GE2/0/42         S       32768    6         {ABCDEF}
Remote:
  Actor            Partner Priority Oper-Key  SystemID               Flag
--------------------------------------------------------------------------------
  GE1/0/42         39      32768    1         0x8000, 4431-9233-c64e {ABCDEF}
  GE2/0/42         6       32768    1         0x8000, 4431-9233-c64e {ABCDEF}

[hpmas]

ok .. we figure it out .. there was a block role on our ISP infrastructure .. they was blocking the 802.3ad protocol

thanks