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Flags on etherchannel

CiscoBrownBelt
Level 6
Level 6

See output of couple etherchannel ports on 4500 VSS switches below. So I see S and A flags which are normal correct. All channel-port uplinks between switches are up. Reason I want to confirm is that ssh to other directly connected switches from the dual sup 4500 VSS is slow on the CLI.

I also see anywhere from 2 to 18 output drops on the interfaces mainly from the switch with the stanby SUPs.

Any ideas?

 

sh etherchannel detail
Channel-group listing:
----------------------

Group: 1
----------
Group state = L2
Ports: 8 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: LACP
Minimum Links: 0


Ports in the group:
-------------------
Port: Te1/5/2
------------

Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = LACP

Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.

Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Te1/5/2 SA bndl 32768 0x1 0x1 0xC2 0x3D

Partner's information:

LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Te1/5/2 SA 32768 4c77.6db1.2d7f 13s 0x0 0x13 0x111 0x3D

Age of the port in the current state: 0d:22h:17m:46s

Port: Te1/6/2
------------

Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
Port index = 4 Load = 0x00 Protocol = LACP

Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.

Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Te1/6/2 SA bndl 32768 0x1 0x1 0xC6 0x3D

Partner's information:

LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Te1/6/2 SA 32768 4c77.6db1.2d7f 24s 0x0 0x13 0x211 0x3D

Age of the port in the current state: 0d:22h:17m:33s

2 Replies 2

nazimkha
Level 4
Level 4
LACP has two modes of operation :
1. Active
2. Passive
Both modes name are self explanatory. 'A' flag denotes that the etherchannel has been configured in active mode.
The LACP PDU's can be sent at a faster rate using lacp fast rate. The default interval is 30 secs (slow rate, S flag)

Ok. Any idea why the CLI may be slow when ssh to other switches from the 4500s in VSS?
Interfaces show anyhwere from 2 to 20 drops, other than that I don't see any other anomolies.

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