Solved

Setting up vlan forwarding on Cisco 4510r Catalyst switch

Posted on 2014-02-26
8
880 Views
Last Modified: 2014-02-28
Total novice but working with someone who has a clue.
Cisco 4510r running os 12.2

We had everything running in vlan 1 which was 10.0.0.x , gateway 10.0.0.1, subnet 255.255.252.0
We created vlan 20 which is set to 10.0.20.0, gateway 10.0.20.1, subnet 255.255.255.0.

We added 1 port to vlan 20 and verified that we could ping the new gateway.
We are attempting to get vlan 20 to route to vlan 1
So from a machine in vlan 20 with ip 10.0.20.100 be able to at least ping a machine in vlan 1 with IP 10.0.0.20.

no luck. Looking for any information that I can forward to the engineer working on this issue.
Thanks,
0
Comment
Question by:adamant40
  • 5
  • 3
8 Comments
 
LVL 1

Expert Comment

by:netdsg
ID: 39890683
Can the switch ping both the PC's?
0
 

Author Comment

by:adamant40
ID: 39890696
Yes
0
 
LVL 1

Expert Comment

by:netdsg
ID: 39890716
Verify the following:

ip routing is enabled on the switch with the 'ip routing' command in global mode

You can verify this on the switch console with a 'show ip route' command, routes for both networks should be present.

Verify the use of VLAN interfaces on the 4500 switch

Example:
interface vlan 1
ip address 10.0.0.1 255.255.255.0

The switch ports should look something like this:

int g0/x
switchport mode access
switchport access vlan 1

int g0/x
switchport mode access
switchport access vlan 20

Verify the default gateways on the PC's

10.0.0.x PC default gateway 10.0.0.1
10.0.20.x PC default gateway 20.0.20.1
0
 

Author Comment

by:adamant40
ID: 39890769
Thanks I have passed that on to Engineer working on it and will update when I hear back.
0
How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

 

Author Comment

by:adamant40
ID: 39893472
So things get more complicated, do my best to record what the engineer told me. If I can't provide enough information to make this clear I'll close out the question and award you the points.

They setup vlan 10 and vlan 20 and were able to route between those vlans no problem.

Most of our systems are in vlan 1 (guess that is the default). Vlan 1 has a gateway address of 10.0.0.5, the IP address of the switch itself.

Our Pix firewall is the 10.0.0.1 gateway IP.
0
 
LVL 1

Accepted Solution

by:
netdsg earned 500 total points
ID: 39893888
One approach is to make the link between the firewall and the switch a routed link.  See the attached jpeg drawing L3 switch to Firewall Drawing
The key here is the 'no switchport' command on the switch port facing the firewall.

With this approach the appropriate vlan interface is the default gateway for the hosts.  The Layer three switch then routes traffic to the other Vlan or to the firewall as needed.  The firewall needs routes back to the vlans and NAT configuration for any new vlans.
0
 

Author Comment

by:adamant40
ID: 39895133
Thanks I'll pass this along and see what happens.
0
 

Author Closing Comment

by:adamant40
ID: 39895137
Unable to implement myself but will pass on to the engineer.
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

A few months ago I attended the Rocky Mountain IPv6 Summit which was a two-day educational event; it was the 3rd annual conference held here in Denver, Colorado that was held at the Hyatt Regency Denver at the Colorado Convention Center. It was an e…
Understanding FTPS File transfer is a common requirement in most Enterprises. While there are numerous ways to get a file from Point A to Point B over a network, perhaps the most common method still in use is FTP – File Transfer Protocol. FTP is …
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…

758 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

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now