04-05-2015 09:05 PM - edited 03-07-2019 11:24 PM
Connection between our core switch to access switch is showing suspended for etherchannel interface
interface GigabitEthernet1/0/2
switchport mode trunk
channel-group 2 mode on
end
interface GigabitEthernet1/0/1
switchport mode trunk
channel-group 2 mode on
end
interface Port-channel2
switchport mode trunk
GigabitEthernet1/0/1 is up, line protocol is down (suspended)
GigabitEthernet1/0/1 is up, line protocol is down (suspended) MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX input flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00
GigabitEthernet1/0/2 is up, line protocol is up (connected)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000Base
Logs:
TX%EC-5-CANNOT_BUNDLE2: Gi1/0/1 is not compatible with Gi1/0/2 and will be suspended (speed of Gi1/0/1 is 100M, Gi1/0/2 is 1000M)
why the speed is varying but i was configured as auto , Kindly suggest
Gi1/0/2 connected trunk a-full a-1000 10/100/1000BaseTX
Gi1/0/1 suspended trunk a-full a-100 10/100/1000BaseTX
Solved! Go to Solution.
04-06-2015 01:08 AM
Ok. Thanks for the output.
Output tells me you've got a cable problem at the remote end of Gi 1/0/1. Maybe the patch cable or could be the punch block.
If you want GigabitEthernet speed then Pairs A, B and D must be NORMAL.
04-05-2015 10:13 PM
TX%EC-5-CANNOT_BUNDLE2: Gi1/0/1 is not compatible with Gi1/0/2 and will be suspended (speed of Gi1/0/1 is 100M, Gi1/0/2 is 1000M) Gi1/0/2 connected trunk a-full a-1000 10/100/1000BaseTX Gi1/0/1 suspended trunk a-full a-100 10/100/1000BaseTX
Make sense. Look at the speed of both ports. They are not the same. And this is why Gi1/0/1 is suspended.
Gi 1/0/1 could potentially have a faulty cable. You could try running a TDR to determine.
1. Command: test cable tdr interface Gi 1/0/1;
2. Wait for approximately 5 to 7 seconds;
3. Command: sh cable tdr interface Gi 1/0/1;
4. Post the output to #3.
04-05-2015 11:24 PM
logs :
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/1 100M Pair A 36 +/- 0 meters N/A Normal
Pair B 37 +/- 1 meters N/A Short/Crosstalk
Pair C 74 +/- 0 meters N/A Normal
Pair D 37 +/- 1 meters N/A Short/Crosstalk
04-06-2015 01:08 AM
Ok. Thanks for the output.
Output tells me you've got a cable problem at the remote end of Gi 1/0/1. Maybe the patch cable or could be the punch block.
If you want GigabitEthernet speed then Pairs A, B and D must be NORMAL.
04-06-2015 04:01 AM
thank you leo let me check
04-06-2015 09:49 PM
there was issue in patch panel port is not supporting the speed, after changing to other port its fine.
thanks
08-11-2020 05:18 AM
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi0/45 100M Pair A 25 +/- 4 meters Pair A Normal
Pair B 4 +/- 4 meters Pair B Open
Pair C 24 +/- 4 meters Pair C Normal
Pair D 25 +/- 4 meters Pair D Normal
2nd switch
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi0/43 100M Pair A 25 +/- 4 meters Pair B Normal
Pair B 20 +/- 4 meters Pair A Open
Pair C 25 +/- 4 meters Pair C Normal
Pair D 25 +/- 4 meters Pair D Normal
04-10-2023 12:40 PM
Hi all community fellows. Just to share my experience and how I solved the problem. My situation looks like that - a Cisco UCS C240 M4S2 server connected with four ports to two Cisco 3850 switches in a stack. There are two ports connected to each switch in a stack. All four ports on the 3850 are in a port channel. After some maintenance in the rack the issue - "%ETC-5-CANNOT_BUNDLE2: Gi1/1/1 is not compatible with Gi1/1/2 and will be suspended (speed of Gi1/1/1 is 100M, Gi1/1/2 is 1000M)" appears on 3850. Port channel went down and I lost connectivity between the server and the switch. Reading the posts above I try to check all the connections - cables, jacks and inserts connecting the devices. It appears to be one of the cables with interrupted wire 5, so making possible only 100 M of speed for this connection. Replacing the faulty wire fix the problem for me. So check all physical elements before experiment with any settings. This is it. I solved my problem. Hope to help someone this way.
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