03-11-2013 05:51 PM - edited 03-04-2019 07:15 PM
Hi,
Attempting to setup VSS on 2 x 4500X's using the following guide:
https://supportforums.cisco.com/docs/DOC-29472
But the portchans go into suspended mode when applied to the physical Ints:
SW1:
interface Port-channel5
switchport
switchport mode trunk
switchport nonegotiate
switch virtual link 1
end
sw1#sh interface tenGigabitEthernet 1/1
TenGigabitEthernet1/1 is up, line protocol is up (connected)
SW2:
interface Port-channel10
switchport
switchport mode trunk
switchport nonegotiate
switch virtual link 2
end
sw2#sh interface tenGigabitEthernet 1/1
TenGigabitEthernet1/1 is up, line protocol is up (connected)
Then I add physical ports to the portchan, and it complains that trunk mode of the Ints is not compatable? (dynamic vs trunk)
sw1(config)#interface tenGigabitEthernet 1/1
sw1(config-if)#switchport mode trunk
sw1(config-if)#channel-group 5 mode on
WARNING: Interface TenGigabitEthernet1/1 placed in restricted config mode. All extraneous configs removed!
sw1(config-if)#
*Mar 11 16:37:24.004: %EC-5-CANNOT_BUNDLE2: Te1/1 is not compatible with Po5 and will be suspended (trunk mode of Te1/1 is dynamic, Po5 is trunk)
sw2(config)#interface TenGigabitEthernet1/1
sw2(config-if)#switchport mode trunk
sw2(config-if)#channel-group 10 mode on
WARNING: Interface TenGigabitEthernet1/1 placed in restricted config mode. All extraneous configs removed!
sw2(config-if)#
*Jan 22 00:30:13.065: %EC-5-CANNOT_BUNDLE2: Te1/1 is not compatible with Po10 and will be suspended (trunk mode of Te1/1 is dynamic, Po10 is trunk)
interface Port-channel10
switchport
switchport mode trunk
switchport nonegotiate
switch virtual link 2
end
interface TenGigabitEthernet1/1
switchport mode trunk
switchport nonegotiate
no lldp transmit
no lldp receive
no cdp enable
channel-group 10 mode on
service-policy output VSL-Queuing-Policy
If I remove "switch virtual link " from the portchans, and then re-apply them to the tenGig ints, the portchan comes up?
sw2#sh int port-channel 10
Port-channel10 is up, line protocol is up (connected)
Both switches are running 03.04.00.SG and 15.0(1r)SG7 ROM
Any help is greatly appreciated.
03-11-2013 08:33 PM
Hi,
By seeing this log message that your physical interface is still in dynamic mode and disabled in the port-channel.
Jan 22 00:30:13.065: %EC-5-CANNOT_BUNDLE2: Te1/1 is not compatible with Po10 and will be suspended (trunk mode of Te1/1 is dynamic, Po10 is trunk)
Please entry this below command and check the stauts. both should be match . I guess, as per your configuration you will see the difference as physical interface still in dynamic negotation mode.
show int t1/1 switchport
show int po10 sw
EX :
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Please try to disable dynamic trunking mode in the physical interface and re-configure the port-channel will fix the issue.
Try this below config:
switch(config-if)#switchport mode trunk
Command rejected: An interface whose trunk encapsulation is "Auto" can not be co
nfigured to "trunk" mode. -----------------------------------------------------> normally you will get this error when you change the interface to trunk if the int in auto mode
switch(config-if)#switchport trunk encapsulation dot1q
switch(config-if)#switchport mode trunk
switch(config-if)#switchport nonegotiate
HTH
Regards,
VS.Suresh.
*Plz rate the usefull posts.
03-11-2013 09:44 PM
Thanks for the reply - As I stated in my post, if I remove "switch virtual link" from the portchans, then re-apply them to the physical Ints, the portchan comes up?
And as you can see below, negotiation of Trunking is off on both portchan and tengig1/1:
sw2#show int t1/1 switchport
Name: Te1/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down (suspended member of bundle Po10)
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
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: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
sw2#
sw2#show int port-chan10 switchport
Name: Po10
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
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: ALL
Pruning VLANs Enabled: 2-1001
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
sw2#
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