Solved

Local7.Warning xxx.xxx.xxx.xxx %CDP-W-NATIVE_VLAN_MISMATCH:

Posted on 2013-12-07
3
1,021 Views
Last Modified: 2013-12-23
I have two Cisco SG300-20 switches.
One is being used as a central LAN switch and one is being used as an internet switch (i.e. to connect devices with public addresses).

I want to be able to access the internet switch for switch management from inside the LAN.
The public addressed devices are on VLAN1.
So, I've set up VLAN 2 and assigned one port to that VLAN.
Then, I've assigned a LAN IP address to the switch and can access it via this port/VLAN2.

This VLAN2 port on the internet switch connects to port ge10 on the LAN switch (which is operating everything on VLAN1 for *that* switch).  There are no trunks or tagging.

I'm getting messages:

Local7.Warning xxx.xxx.xxx.xxx %CDP-W-NATIVE_VLAN_MISMATCH:
Native VLAN mismatch detected on interface gi10.

I have tried to supress these messages using the command line interface to the switches but the commands I found and tried seem to not be available on these switches.

Is there a way to shut this warning off?  
What if I put everything on the LAN switch on *its* VLAN2?  Would that help?
0
Comment
Question by:Fred Marshall
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 50

Expert Comment

by:Don Johnston
ID: 39703725
Is there a way to shut this warning off?  
Yes. Resolve the VLAN mismatch and the warnings will stop.  Or you can disable logging or disable CDP. But fixing the VLAN mismatch is the "right" way to fix it.

What if I put everything on the LAN switch on *its* VLAN2?  Would that help?
I think that will fix your problem.  It sounds like the port on the internet switch that your LAN switch is connected to is in VLAN 2. So if you change the g10 port on the LAN switch to VLAN 2, that will eliminate the VLAN mismatch.
0
 
LVL 26

Author Comment

by:Fred Marshall
ID: 39704726
Well, I've never done it that way before - so I could use a little more coaching.  If I switch the g10 port switch to a new VLAN2 on the LAN switch then how will that port communicate onto VLAN1 where everything else (including my workstation) is located?
0
 
LVL 50

Accepted Solution

by:
Don Johnston earned 500 total points
ID: 39704732
You would need to configure all the ports that are currently members of VLAN 1 to be members of VLAN 2.
0

Featured Post

Ready to trade in that old firewall?

Whether you need to trade-up to a shiny new Firebox or just ready to upgrade from whatever appliance you're using now, WatchGuard has the right appliance for you! Find your perfect Firebox today with appliance sizing tool!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
Make the most of your online learning experience.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
Suggested Courses

635 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question