cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
4586
Views
0
Helpful
3
Replies

3750 replaced with 3750x - port-channel config problem

hi,

i have a problem in a 3750, 3750x mixed stack. i replaced 2 pcs. 3750 with 3750x with no problem, but now we have a port config problem

IOS 12.2(55)SE1

the old config was:

interface Port-channel1

description UPLINK

switchport trunk encapsulation dot1q

switchport mode trunk

switchport nonegotiate

FastEthernet 2/0/1 - 48

description **ACCESS PORT**

switchport access vlan 301

switchport mode access

storm-control broadcast level 10.00

storm-control action trap

no cdp enable

no cdp tlv server-location

no cdp tlv app

spanning-tree portfast trunk

spanning-tree bpduguard enable

GigabitEthernet 2/0/1 - 4

description **UPLINK**

switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
channel-group 1 mode active

----

then we replaced this switch 2 with the new 3750X with the 4port Gigabit Module

new config:

GigabitEthernet 2/0/1 - 48

-> access Ports (same as old for access ports)

GigabitEthernet 2/1/1 - 4

-> uplink ports in the port-channel group 1 (same as old for uplink)

but the old config from the first 4gigabit ports was not deleted -> now i became following errors:

000096: Apr 10 06:57:24: %EC-5-CANNOT_BUNDLE2: Gi2/0/1 is not compatible with Gi2/1/1 and will be suspended (Broadcast suppression: Level of Gi2/0/1 is 10.00%, 10.00%. Level of Gi2/1/1 is not configured.) (switch2)

000097: Apr 10 06:57:24: %EC-5-CANNOT_BUNDLE2: Gi2/0/4 is not compatible with Gi2/1/3 and will be suspended (Broadcast suppression: Level of Gi2/0/4 is 10.00%, 10.00%. Level of Gi2/1/3 is not configured.) (switch2)

000098: Apr 10 06:57:24: %EC-5-CANNOT_BUNDLE2: Gi2/0/3 is not compatible with Gi2/1/3 and will be suspended (Broadcast suppression: Level of Gi2/0/3 is 10.00%, 10.00%. Level of Gi2/1/3 is not configured.) (switch2)

it seems that the old config, which was associated to the gigabit 2/0/1 - 4 uplink ports, is now active on the new switch - but these are now configured as access ports.

i tried to remove the Portchannel 1 -> reassociated to the Uplink ports -> no changes on this behaviour

i tried default interface giga 2/0/1...4 -> not ok

i replaced the switches when the whole stack was running... should i try to reload the whole stack?

other ideas?

thanks.

1 Accepted Solution

Accepted Solutions

Leo Laohoo
Hall of Fame
Hall of Fame

Try this:

default interface range Gig 2/0/1 , Gig 2/1/1

interface range Gig 2/0/1 , Gig 2/1/1

switchport encap dot

switchport mode trunk

switchport non

channel-group 1 mode active

View solution in original post

3 Replies 3

Leo Laohoo
Hall of Fame
Hall of Fame

Try this:

default interface range Gig 2/0/1 , Gig 2/1/1

interface range Gig 2/0/1 , Gig 2/1/1

switchport encap dot

switchport mode trunk

switchport non

channel-group 1 mode active

hi leolaohoo,

thx!

it seems that the configuration was not visible under the interfaces. also the default interface was not able to reset the interface to a NULL configuration.

i've done:

int ran g2/0/1 - 4

switchport encap dot

switchport mode trunk

switchport non

channel-group 1 mode active

removed the uplink config and config as an access switchport

int ran g2/0/1 - 4

no switchport mode trunk

no switchport non

no channel-group 1 mode active

sw mo ac

no switchport encap dot

thats it!

thanks!

Konrad.

Glad to be of some form of assistance.  Thanks for the ratings Konrad.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: