10-26-2011 05:41 PM - edited 03-07-2019 03:04 AM
I have 2 - Nexus 5548's connecting to a 3750x stack. I'm trying to bring up a trunk between the a Nexus 5548 and the master switch. The trunk will not come up. Is the native Vlan a requirement? Below is what I currently have configured. I have tested on the 5548 and the Vlan's are up and running.
Nexus 5K
Int vlan 300
Description Management
Ip address 10.31.0.2/24
Hsrp 0
Preempt
Priority 200
Ip 10.31.0.1
No shutdown
!
Int vlan 302
Description MDF_148_R1_Data
Ip address 10.31.2.2/23
Hsrp 2
Preempt
Priority 200
Ip 10.31.2.1
Ip dhcp relay address 10.1.1.25
No shutdown
!
Int vlan 304
Description MDF_148_R1_Voice
Ip address 10.31.4.2/23
Hsrp 4
Preempt
Priority 110
Ip 10.31.4.1
Ip dhcp relay address 10.1.1.25
No shutdown
Interface port-channel 12
Switchport mode trunk
Interface e1/1
Switchport mode trunk
Channel-group 12 mode active
3750x
Interface Te1/1/1
Switchport mode trunk encapsulation dot1q
Switchport mode trunk allowed vlan 1,300,302,304
Switchport mode trunk
When I do a "show int trunk" on the 5548 it show's the po12 with a native vlan 1 and status of trunk-down
Po12 - vlans allowed 1,300,302,304
This is a new install. I appreciate all the help.
10-31-2011 11:18 PM
Hi.
VSS --- (Trunk) ---- NEXUS 5K
### config ###
- VSS
interface TenGigabitEthernet1/3/2
description ## To Private-N5K-1(T1/18) ##
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 31
switchport trunk allowed vlan 11,31,310,404,603,701,776
switchport mode trunk
channel-group 300 mode on
interface Port-channel300
description ## To Private-N5K ##
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 31
switchport trunk allowed vlan 11,31,310,404,603,701,776
switchport mode trunk
- NEXUS 5K
interface Ethernet1/18
description ## To VSS ##
switchport mode trunk
switchport trunk native vlan 31
switchport trunk allowed vlan 11,31,310,404,603,701,776
channel-group 300
interface port-channel300
description ## To Private-VSS ##
switchport mode trunk
vpc 300
switchport trunk native vlan 31
switchport trunk allowed vlan 11,31,310,404,603,701,776
speed 10000
JooN Young LEE
11-01-2011 07:00 AM
Are you doing vPC from the 2 Nexus 5548s?
I see you configured an etherchannel on the trunk port but I don't see any other etherchannel or vPC related configuration in your post.
If you remove the etherchannel from the interface, does the trunk come up?
I see the 3750 is running 10Gbps, I'm assuming you have a 10Gbps interface in the 5548 as well?
06-13-2012 10:08 PM
HI,
did this get resolved?
06-14-2012 01:41 AM
fixed mine by replacing
channel-group XX mode active/or
to
Channel-group XX
If spanning tree playing up with some L2 Gateway Inconsitent,
change the spanning tree port type to normal
spanning-tree port type nornal
don't forget to make your Nexus as Spanning tree vlan XX root primary/secondary
06-14-2012 07:00 AM
As Edison mentioned the good way to check now is to remove channel-group command - since no port-channel is configured from catalyst side.
But Dion - generally dynamic port-channel configuration is more desired when configuring inter-swtich links since in most cases it will show issues between the switches.
Boxes will try to find common parameters that will be supported by both devices which can poin to misconfigs etc..
HTH
Alex
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