port-channel problem with sso redundancy mode

[pornthip_k]

Dear all

I have problem when I config " int port-channel " at cisco 4006.

CoreSwitch(config)#int port-channel 2

^

% Invalid input detected at '^' marker.

CoreSwitch(config)#

Aug 17 11:16:30.931 TH: %EC-4-SSOINCOMPAT: Routed port channels cannot be created while the switch is configured in the SSO redundancy mode

Aug 17 11:16:30.931 TH: %EC-4-NOMEMORINCOMPAT: Allocation of the agport idb failed.

I search from internet, It tell me that this error come from port-channel is set to be layer 3.

How to config cisco 4006 to set port-channel to be layer 2 by default?

Thank you

[mihanlin]

Hello,

There are two options you can use to fix this.

Either configure your switch to use RPR mode:

Conf t

redundancy

mode rpr

(This has the disadvantage of RPR being slower to take over during a failover)

---OR---

make the port channel a layer 2 port, and use an SVI instead.

1. Make the port-channel a layer 2 port:

CoreSwitch(config-if)#no switchport

2. Configure a new Vlan

CoreSwitch(config)#vlan xyz

3. Make a Layer3 SVI vlan port:

CoreSwitch(config-vlan)#interface vlan xyz

4. Assign it an IP address

CoreSwitch(config-if)#ip addr w.x.y.z

5. Add the Vlan to the Port-channel:

CoreSwitch(config)#interface Port-chanX

CoreSwitch(config-if)#switchport access vlan xyz

PLEASE NOTE: this will bring your network down while you are doing this.

Hope this helps,

Michael.

[nitass]

Hello Michael,

Thanks for reply. We thought we should make a layer 2 port channel rather move to RPR mode.

But we understood an "interface port-channel" command creates a layer3 port channel by default. So after we entered that command, it made the error "%EC-4-SSOINCOMPAT: Routed port channels cannot be created while the switch is configured in the SSO redundancy mode" message. The information about interface port-channel command is showed in the following URL.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12_18a/command/i1.htm#1043360

How can we create a layer2 port channel in this case? Please advice.

Thanks in advance,

Nitass

[mihanlin]

Hi Nitass,

I have tried this now on a 4500 switch and can confirm that you will need to do the following first:

1. Go into each of the physical ports in the port channel (FastEthernet/GigEthernetx/y) and configure "no switchport" on each.

2. Go into the Port-Channel interface and configure "No switchport", then the IP address.

3. Go back into the physical port configuration and re-enable the channel group by "channel-group x mode desirable|on|passive". You should have this in your config from before anyway.

So basically you will need to remove all the members from the etherchannel, then change each of the individual ports via "no switchport", then configure the etherchannel again.

Please let me know how this goes.

Thanks,

Michael

[nitass]

Hello Michael,

Thanks for promptly reply. We really want to create a layer 2 port channel, not a layer 3. So do we need to enter the "no switchport" command in step 1 and 2?

Does the "channel-group" command create a layer 2 or layer 3 port channel by default?

Ps. our switch is 4507R.

Please advice.

Thanks in advance,

Nitass

[mihanlin]

The port-channel interface will default to whatever the physical switchports you have configured. If the ethernet ports you have as members are Layer2, then the port-channel interface will be layer2.

So, to make each interface a layer2, use the opposite of what I was saying, and type "switchport" under each interface.

Cheers,

Michael.

[nitass]

Hello Michael,

Thanks for promptly reply. We will try and let you know if we have any problem.

Thanks and regards,

Nitass

[nitass]

Hello Michael,

We will configure it on today night. If we have any problems, would you mind if we called you on that time? How can we contact you?

Thanks in advance,

Nitass

[mihanlin]

Hi Nitass,

Sorry but my TAC shift hours are 10AM-4:30PM monday to friday Eastern Standard Time (EST). I will be off shift.

However call the TAC toll free numbers to log a case: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Or create one online:

http://tools.cisco.com/ServiceRequestTool/create/

An engineer will then be able to help you with the configuration should anything go wrong.

Thanks,

Michael.

[nitass]

Hello Michael,

We think you could help us because your office hours should match with our working hours. We will start from 10:00 pm (Asia/Bangkok) today. Would you mind?

10:00:00 p.m. Tuesday August 29, 2006 in Asia/Bangkok converts to

10:00:00 a.m. Tuesday August 29, 2006 in EST

Thanks in advance,

Nitass

[mihanlin]

Hi Nitass,

I'm in Sydney and we are 3 hours ahead of Bangkok from looking here:

http://timeanddate.com/worldclock/meetingtime.html?day=29&month=8&year=2006&p1=28&p2=240&p3=-1&p4=-1

Therefore, 10PM will be 1AM in Sydney.

Sorry I'm only able to help with cases logged through the TAC. My work on netpro is purely advisory.

If you raise a TAC case someone in that timezone can then assist.

Thanks,

Michael.

[nitass]

Hello Michael,

Ok, we misunderstood. Thanks for your kind. :)

Thanks and regards,

Nitass

[nitass]

Hello Michael,

It works fine. Thanks for your help.

Thanks and regards,

Nitass