Adding new VLAN in Nexus 5596 issue

[Dhiraj Jagdale]

Hi,

I have facing issue during new vlan in nexus 5596 switch interface, after adding new vlan's old vlan get deleted or not seen on interface.

>Before adding the new vlan's interface config. is below

interface Ethernet1/25
  inherit port-profile EDGE
  no cdp enable
  switchport mode trunk
  switchport access vlan 14
  switchport trunk native vlan 7
  switchport trunk allowed vlan 4, 12-20, 29-30, 80
  spanning-tree port type edge trunk
  spanning-tree bpduguard enable
  spanning-tree bpdufilter disable
  switchport private-vlan host-association 800 801

>After adding new vlan (42,43,44) old vlan (16,29) not seen

interface Ethernet1/25
  inherit port-profile EDGE
  no cdp enable
  switchport mode trunk
  switchport access vlan 14
  switchport trunk native vlan 7
  switchport trunk allowed vlan 4, 12-15, 17-20, 30, 42-44, 80
  spanning-tree port type edge trunk
  spanning-tree bpduguard enable
  spanning-tree bpdufilter disable
  switchport private-vlan host-association 800 801

I want to know why old vlan not seen after adding new vlan.

Thanks in advance.

[Peter Paluch]

Hello Dhiraj,

This behavior is certainly unexpected.

Can you please answer the following questions for me?

1. Do you see this problem only with e1/25, or with other ports, too?
2. What is your NX-OS version?
3. Can you share the output of show accounting log around the time you performed the configuration change? I need to understand precisely how the VLAN list on the trunk was modified. Please do not exclude any commands from the output, just filter it based on the time.
4. Can you also share the configuration of the EDGE port-profile?

Thank you!

Best regards,
Peter

[Dhiraj Jagdale]

Hi Peter,

thanks for your suggestion..

I got one Bug (CSCvf50699) on cisco site, it might be possible due to which i face this issue. 

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvf50699/?referring_site=bugquickviewredir