Solved

Problem trunking 2 switches

Posted on 2002-06-11
3
231 Views
Last Modified: 2010-04-17
I have a Catalyst 2924 and a Catalyst 2950.  Both are in the same VTP domain.  I have set port 22 on the 2924 and port 24 on the 2950 as trunk ports using 802.1q encapsulation.  I then shut down interface vlan1 and created an interface vlan254.  The addressing is:

172.28.250.20  in vlan 254 for the 2924
172.28.250.21  in vlan 254 for the 2950

I set the ip default gateway as 172.28.250.1

the ports register as "up", but if I do a "show cdp neighbors" I can see the other switch.  However, I cannot ping accross.  Now if I shut down vlan254 and assign the same ip address to vlan1, then bring up vlan1, I can ping the other switch.  What gives?  The vlan is defined in the database on both switches.  What's the difference?
0
Comment
Question by:Silas
[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
3 Comments
 
LVL 11

Expert Comment

by:geoffryn
ID: 7071268
VLAN 1 is the native VLAN for the trunk.  Did you reassign the trunk port to VLAN 254?
0
 
LVL 17

Expert Comment

by:mikecr
ID: 7077935
If you do a show vtp status, does it list how many vlan's you have? Did you say you can or cannot see the other switch using show cdp neighbors?
0
 
LVL 8

Accepted Solution

by:
scraig84 earned 200 total points
ID: 7078118
I think Geoffryn is on the right track.  If you are putting your management interface in a different VLAN you need to assign it to the correct native VLAN.

Take a look at these:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/29_35wc3/sc/swgvlans.htm#xtocid45

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/2950_wc/scg/scg_vlan.htm#xtocid2248339

Hope that helps!
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses
Course of the Month4 days, 21 hours left to enroll

636 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