vlan internal usage nexus

[felix.reyner]

Hi,

I would like to ask about vlan 4094 in nexus, as far I know that vlan is belong to internal usage of nexus. I have change the internal usage vlan to another range, but after I rebooted the nexus I still saw vlan 4094 in internal usage. Is there another way I could use vlan 4094? because in my current production environment I am using vlan 4094.

Thank you

[Rajeshkumar Gatti]

The changes you mentioned should have helped convert vlan 4094 into a regular vlan.

Can you please post the following outputs-

show accounting log

show logging log

show vlan internal usage

show version

-Raj

[InayathUlla Sharieff]

Rajesh,

Just to add on I just tried the above test on my pod for this issue and issue is seen. 

Here are the steps I did:-

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/layer2/configuration/guide/Cisco_Nexus_7000_Series_NX-OS_Layer_2_Switching_Configuration_Guide_Release_5-x_chapter4.html

N7K-1#

1-system vlan reserve changed to different range:-

N7K-1# conf t

N7K-1# system vlan 2000 reserve
This will delete all configs on vlans 2000-2127. Continue anyway? (y/n) [no] y

N7K-1# Copy run to start and rebooted the box.

2- After the box was rebooted:-

show system vlan reserved

system current running vlan reservation: 2000-2127  >> its updated.

3-

N7K-1# show vlan internal us

VLANs DESCRIPTION
------------------- -----------------
2048-2111 Multicast
2000-2015 Online Diagnostic
2016-2047 ERSPAN
2112 Satellite
2113 Fabric scale
2000-2127,4094 Current  >> dont know why it is still showing here.

4- Not able to create the vlan 4094.

N7K-1(config)# vlan 4094
^
invalid vlans (reserved values) at '^' marker.
N7K-1(config)# vlan ?
<1-1999,2128-4093> VLAN ID 1-3967 or range(s): 1-5, 10 or 2-5,7-19

Might be something I am missing here ....

regards

Inayath

[Rajeshkumar Gatti]

Thanks Inayath for testing it in the lab. I see that 4094 is always going to be reserved as per some internal notes. I will file a documentation bug to have the L2 switching config guide updated to indicate that 4094 will not be available for customer use.

-Raj

[Rajeshkumar Gatti]

Updated an older bug CSCtz64509 to track this. Bug may not be visible in the public domain yet but just FYI that we will be tracking it.

[InayathUlla Sharieff]

Thank you Rajesh for the update.