Cisco Catalyst 3560-X problems

[BjornG01]

Before I begin my story, please note that my networking knowledge isn't up to speed and I have little info about how this network was setup. 

We had a power outage and our Cisco Catalyst 3560-X switch is giving us some problems. 

Let me explain:

The Te1/1 and Te1/2 ports work together as a link aggregation. These ports are connected to a Netgear M4300-24X24F switch. Spanning Tree is also configured on the switch.

After the power outage, the ports on the M4300-24X24F switch were down. When we brought those ports up, the network stopped working. When we unplug Te1/2 everything works. I do see that the ports on the netgear switch are configured as a Trunk member. 

So far I found that port Te1/2 is a suspended member of bundle Po2. Also when I do sh vlan, I see port Te1/2 in vlan 1, but port Te1/1 is nowhere to be seen. 

Any help is appreciated.

[balaji.bandi]

Can you post relavant config -

other side make Switch as Root bridge for VLAN 1 other vlan as priroty to become root bridge.

id the there are in Bundle you should not see any port-blocking, somewhere config lost due to unexpected power loss.

[BjornG01]

What kind of config do you need?

I hope the following info helps:

N100#sh int trunk

Port Mode Encapsulation Status Native vlan
Gi0/27 on 802.1q trunking 1
Gi0/33 on 802.1q trunking 1
Po1 on 802.1q trunking 1
Po2 on 802.1q trunking 1031

Port Vlans allowed on trunk
Gi0/27 1,50,60-61,1025,1027,1029,1031,2028,2030,2032,2046,2048,2052,2054,2056,2058,2092
Gi0/33 1,50,60-61,1025,1029,1031,2034
Po1 1,3,50,60-61,1011,1025,1027,1029,1031,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088
Po2 1-4094

Port Vlans allowed and active in management domain
Gi0/27 1,50,60-61,1025,1027,1029,1031,2028,2030,2032,2046,2048,2052,2054,2056,2058,2092
Gi0/33 1,50,60-61,1025,1029,1031,2034
Po1 1,3,50,60-61,1025,1027,1029,1031,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088
Po2 1,3-4,9-10,50,60-61,200,1014,1025,1027,1029,1031,1601,2024,2026,2028,2030,2032,2034,2036,2038,2040,2042,2044,2046,2048,2052,2054,2056,2058,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088,2090,2092

Port Vlans in spanning tree forwarding state and not pruned
Gi0/27 1,50,60-61,1025,1027,1029,1031,2028,2030,2032,2046,2048,2052,2054,2056,2058,2092
Gi0/33 1,50,60-61,1025,1029,1031,2034
Po1 1,3,50,60-61,1025,1027,1029,1031,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088
Po2 1,3-4,9-10,50,60-61,200,1014,1025,1027,1029,1031,1601,2024,2026,2028,2030,2032,2034,2036,2038,2040,2042,2044,2046,2048,2052,2054,2056,2058,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088,2090,2092

N100#sh interfaces port-channel 2
Port-channel2 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 3c08.f631.b1b5 (bia 3c08.f631.b1b5)
MTU 9198 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, link type is auto, media type is unknown
input flow-control is off, output flow-control is unsupported
Members in this channel: Te1/1
ARP type: ARPA, ARP Timeout 04:00:00
Last input 3d04h, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 1/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 13299000 bits/sec, 3143 packets/sec
5 minute output rate 23042000 bits/sec, 3515 packets/sec
707563817 packets input, 342846202369 bytes, 0 no buffer
Received 50155254 broadcasts (13617003 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 13617003 multicast, 0 pause input
0 input packets with dribble condition detected
835192948 packets output, 808296845563 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

N100#sh interfaces Te1/1 switchport
Name: Te1/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk (member of bundle Po2)
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1031 (MANAGEMENT)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: 1,3,4,9,10,50,60,61,200,1014,1025,1027,1029,1031,1601,
2024,2026,2028,2030,2032,2034,2036,2038,2040,2042,2044,2046,2048,2052,
2054,2056,2058,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,
2084,2086,2088,2090,2092
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

N100#sh interfaces Te1/2 switchport
Name: Te1/2
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down (suspended member of bundle Po2)
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1031 (MANAGEMENT)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: 1,3,4,9,10,50,60,61,200,1014,1025,1027,1029,1031,1601,
2024,2026,2028,2030,2032,2034,2036,2038,2040,2042,2044,2046,2048,2052,
2054,2056,2058,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080,2082,
2084,2086,2088,2090,2092
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

[Georg Pauwen · Accepted solution]

Hello,

the interfaces look configured correctly. I would just remove the 'channel-group 2 mode active' line from both interfaces, delete the port channel interface, and rebuild the entire channel by readding port-channel 2, and add the two member interfaces.

So:

N100#conf t

N100(config)#interface TenGigabitEthernet1/1

N100(config-if)#no channel-group 2 mode active

N100(config-if)#exit

N100(config)#interface TenGigabitEthernet1/2

N100(config-if)#no channel-group 2 mode active

N100(config-if)#exit

N100(config)#no interface port-channel 2

N100(config-if)#end

Then:

N100#conf t

N100(config)#interface port-channel 2

N100(config-if)#exit

N100(config)#interface TenGigabitEthernet1/1

N100(config-if)#channel-group 2 mode active

N100(config-if)#exit

N100(config)#interface TenGigabitEthernet1/2

N100(config-if)#channel-group 2 mode active

N100(config-if)#end

[BjornG01]

Thanks for the reply, I will try this Thursday and keep you posted.

[BjornG01]

This solution worked in combination with fixing the native vlan, some switches reverted to VLAN1.