Does anyone point me the reference about the calculation of the hello interval in etherchannel?
This is found that the hello interval 30s is too long in our environement because this is using the STM-1 ethernet connections, which the port would stay up(for the STM-1 connection is still operating) until 30s.
Thanks a lot.
Bennith.
----------------------------------------------------
show etherchannel 1 detail
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: PAgP
Ports in the group:
-------------------
Port: Fa0/1
------------
Port state = Up Mstr In-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Fa0/1 SC U6/S7 H 30s 1 128 Any 29
Partner's information:
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Fa0/1 ET18SW1 000d.28a2.32c0 Fa0/1 5s SC 10001
Age of the port in the current state: 02d:17h:40m:09s
Port: Fa0/2
------------
Port state = Up Mstr In-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Fa0/2 SC U6/S7 H 30s 1 128 Any 29
Partner's information:
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Fa0/2 ET18SW1 000d.28a2.32c0 Fa0/2 7s SC 10001
Age of the port in the current state: 03d:19h:15m:37s
Port-channels in the group:
----------------------
Port-channel: Po1
------------
Age of the Port-channel = 17d:17h:53m:16s
Logical slot/port = 1/0 Number of ports = 2
GC = 0x00010001 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = PAgP
Ports in the Port-channel:
Index Load Port EC state
------+------+------+------------
0 00 Fa0/1 Desirable-Sl
0 00 Fa0/2 Desirable-Sl
Time since last port bundled: 02d:17h:40m:13s Fa0/1
Time since last port Un-bundled: 02d:17h:44m:43s Fa0/1
