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Etherchannel 3550 to 3500xl
I am trying to setup Etherchannel between a 3550 and a 3500xl switch but I can't get it working. There is a significant difference between the 2 switches how it is supposedly configured so I don't know if it's even 'compatible'. Anyway here is my config.
3550#sh run
interface Port-channel3
switchport mode dynamic desirable
!
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10
switchport mode trunk
channel-group 3 mode desirable
!
interface FastEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10
switchport mode trunk
channel-group 3 mode desirable
3550#sh int po3
Port-channel3 is down, line protocol is down (notconnect)
Hardware is EtherChannel, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Auto-duplex, Auto-speed, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
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
3500xl-A#sh run
interface FastEthernet0/3
port group 3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,1002-1005
switchport mode trunk
!
interface FastEthernet0/4
port group 3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,1002-1005
switchport mode trunk
3500xl-A#sh port group
Group Interface Transmit Distribution
----- --------------------- ---------------------
3 FastEthernet0/3 source address
3 FastEthernet0/4 source address
As a side note, I do have Etherchannel working perfectly between other 3500xl switches in my test lab, it just won't work between the 3550 and the 3500xl. Right now they are all daisy chained as such:
3550 == 3500xl == 3500xl == 3500xl
3550#sh run
interface Port-channel3
switchport mode dynamic desirable
!
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10
switchport mode trunk
channel-group 3 mode desirable
!
interface FastEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10
switchport mode trunk
channel-group 3 mode desirable
3550#sh int po3
Port-channel3 is down, line protocol is down (notconnect)
Hardware is EtherChannel, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Auto-duplex, Auto-speed, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
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
3500xl-A#sh run
interface FastEthernet0/3
port group 3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,1002-1005
switchport mode trunk
!
interface FastEthernet0/4
port group 3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,1002-1005
switchport mode trunk
3500xl-A#sh port group
Group Interface Transmit Distribution
----- --------------------- ---------------------
3 FastEthernet0/3 source address
3 FastEthernet0/4 source address
As a side note, I do have Etherchannel working perfectly between other 3500xl switches in my test lab, it just won't work between the 3550 and the 3500xl. Right now they are all daisy chained as such:
3550 == 3500xl == 3500xl == 3500xl
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