etherchannel problem

Hi all,

I've two Catalyst connected with etherchannel. These are the sho ver:

show version Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA5, RELEASE SOFTWARE (fc1) cisco WS-C4506 (MPC8245) processor (revision 7) with 524288K bytes of memory. Processor board ID FOX094418ND MPC8245 CPU at 333Mhz, Supervisor IV Last reset from PowerUp

2 Virtual Ethernet interfaces 96 FastEthernet interfaces 8 Gigabit Ethernet interfaces 403K bytes of non-volatile configuration memory.

-------------------------------------------------------------------------------------------------------------------------------------------------- show version Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA5, RELEASE SOFTWARE (fc1)

cisco WS-C4503 (MPC8245) processor (revision 4) with 262144K bytes of memory. Processor board ID FOX0940038K MPC8245 CPU at 267Mhz, Supervisor II+TS Last reset from PowerUp

2 Virtual Ethernet interfaces 26 Gigabit Ethernet interfaces 511K bytes of non-volatile configuration memory.

---------------------------------------------------------------------------------------------------------------------------------------------------------- Configuration:

interface FastEthernet3/1 switchport access vlan 100 switchport mode access speed 10 duplex half channel-group 5 mode desirable non-silent ! interface FastEthernet3/2 switchport access vlan 100 switchport mode access speed 10 duplex half channel-group 5 mode desirable non-silent

show etherchannel port Channel-group listing: ----------------------

Group: 5

---------- Ports in the group: ------------------- Port: Fa3/1

------------

Port state = Up Sngl-port-Bndl Mstr Not-in-Bndl Channel group = 5 Mode = Desirable-NonSl Gcchange = 0 Port-channel = null GC = 0x00050001 Pseudo port-channel = Po5 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 Fa3/1 U4/S4 H 30s 0 128 Any 10

Age of the port in the current state: 05d:17h:18m:59s

Port: Fa3/2

------------

Port state = Up Mstr In-Bndl Channel group = 5 Mode = Desirable-NonSl Gcchange = 0 Port-channel = Po5 GC = 0x00050001 Pseudo port-channel = Po5 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 Fa3/2 SC U6/S7 H 30s 1 128 Any 116

Partner's information:

Partner Partner Partner Partner Group Port Name Device ID Port Age Flags Cap. Fa3/2 Zec_3560 0015.c611.bc40 Gi1/2 4s SC

50001

Age of the port in the current state: 05d:17h:18m:50s

---------------------------------------------------------------------------------------------------------------------------------------------------------- show etherchannel port Channel-group listing: ----------------------

Group: 5

---------- Ports in the group: ------------------- Port: Gi1/1

------------

Port state = Up Mstr Not-in-Bndl Channel group = 5 Mode = Desirable-NonSl Gcchange = 0 Port-channel = null GC = 0x00050001 Pseudo port-channel = Po5 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 Gi1/1 U4/S2 HI 30s 0 128 Any 0

Age of the port in the current state: 06d:23h:27m:44s

Port: Gi1/2

------------

Port state = Up Mstr In-Bndl Channel group = 5 Mode = Desirable-NonSl Gcchange = 0 Port-channel = Po5 GC = 0x00050001 Pseudo port-channel = Po5 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 Gi1/2 SC U6/S7 H 30s 1 128 Any 38

Partner's information:

Partner Partner Partner Partner Group Port Name Device ID Port Age Flags Cap. Gi1/2 Direkcija 0016.4647.5480 Fa3/2 4s SC

50001

Age of the port in the current state: 05d:17h:20m:26s

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What seems to be a problem?

Thanks, Ivana

Reply to
Ivana
Loading thread data ...

What does "sh run int por 5" show?

Here is one that is working between two 4500s.

interface Port-channel1 switchport switchport trunk encapsulation dot1q switchport trunk native vlan 2 switchport trunk allowed vlan 2,5,... switchport mode dynamic desirable qos vlan-based qos trust cos

interface GigabitEthernet3/3 switchport trunk encapsulation dot1q switchport trunk native vlan 2 switchport trunk allowed vlan 2,5,... switchport mode dynamic desirable speed 1000 duplex full qos vlan-based qos trust cos channel-group 1 mode on

I am not saying that it is optimal, only that it is working:-)

It is not for example recommended that channel mode should be negotiated (not "negotiated"). Sorry not 100% on top of this.

Reply to
anybody43

Ivana,

I see two potential problems with your configuration. First you are trying to create an etherchannel between the gigabit ports on your supervisor module and fast ethernet ports on your other switch. The interfaces G1/1 and G1/2 are not capable of negotiating at 10 Half so the channel will never link. You also do not need the non-silent tag at the end of your command. Try creating the channel using like interfaces. Depending on your topology you may also want to make this a trunk instead of just routing on VLAN100. The trunk will allow you to pass all VLan's switch to switch. Let me know if you have any further questions!

Just> Hi all,

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Reply to
Jelly

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