?
Solved

Connecting C3560-IPBASEK9-M to existing C2960-LANBASE-M

Posted on 2012-12-26
4
Medium Priority
?
750 Views
Last Modified: 2013-05-21
Hi, I am trying to connect a new C3560-IPBASEK9-M to an older C2960-LANBASE-M.  I want to trunk a fast Ethernet port on each and connect them.  
We have two other C3560-IPBASE-M switches that are connected this way and seem to work fine.  
I have tried to configure the C3560-IPBASEK9-M and the older C2960-LANBASE-M in a similar fashion as the two that are working.  I get link lights on both, and can get CDP information.  However, I cannot connect to the network through the new C3560-IPBASEK9-M when I plug a laptop into it.  Also, I cannot telnet to it.
I saw elsewhere on Experts Exchange that the LANBASE IOS does not support IP routing.  I assume this means I cannot use the command ‘ip classless'.  Could this be the problem?  If so, would it help to reverse the setup (connecting the new C3560-IPBASEK9-M to the fiber network, and then connecting the old C2960-LANBASE-M to the new switch)?
0
Comment
Question by:tmaususer
  • 2
  • 2
4 Comments
 
LVL 20

Accepted Solution

by:
rauenpc earned 2000 total points
ID: 38722033
The LANBASE code on the 3560 doesn't support dynamic routing (possible exception with stub routing depending on code version). It will still support static routing. The ip classless only refers to the ability to use IP addressing that doesn't conform to the strictest CIDR rules such as 192.168.x.x/23.

I would console in to the switch and look at what's happening. The vlan interface with the IP configured may not be what you thought, the interface could be down, or you could be plugged in to a port on a different vlan. There could be an ACL on the vty lines denying you access.

You say you get CDP information. When you do a "show cdp neigh detail" does the 3560's IP address show up?

Posting the config of both devices indicating which ports are connected will be helpful. Also run the commands:

show spann
show vlan
show vtp stat
show int status
show int status err
show int trunk
0
 

Author Comment

by:tmaususer
ID: 38722163
Okay, we are going to give it another try in the morning.  I put everything back the way it was and powered down the new switch.  
Just to clarify, the 2960 is the one with the LANBASE code.
I also briefly tried connecting the new switch straight into the fiber network and taking the old switch out of play (We might just take it out of play permanently).  I also had problems connecting to the network with the new switch plugged into fiber.  So I am thinking it has something to do with the new switch config.
I have to get permission to post the config.  I don't think I will be able to.  Is there a certain section that would be helpful or that I should concentrate on?
0
 
LVL 20

Expert Comment

by:rauenpc
ID: 38722173
To shorten it, remove any line with a password or identifying information like a circuit id or account number, remove interfaces that aren't the uplink or the port connected to your pc. Post the rest including the show commands I suggested.

also, the 2960 with LANBASE can do static routing. LAN-lite cannot. 3560 can always do routing, but how advanced of routing you can do depends on code level and licensing.
0
 

Author Comment

by:tmaususer
ID: 38736440
Thanks for your patients.  I captured a lot of information that I hope to post today.
0

Featured Post

[Webinar] Cloud and Mobile-First Strategy

Maybe you’ve fully adopted the cloud since the beginning. Or maybe you started with on-prem resources but are pursuing a “cloud and mobile first” strategy. Getting to that end state has its challenges. Discover how to build out a 100% cloud and mobile IT strategy in this webinar.

Question has a verified solution.

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

Originally, this post was published on Monitis Blog, you can check it here . It goes without saying that technology has transformed society and the very nature of how we live, work, and communicate in ways that would’ve been incomprehensible 5 ye…
This article explains the fundamentals of industrial networking which ultimately is the backbone network which is providing communications for process devices like robots and other not so interesting stuff.
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.
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…

850 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