Connect a 3560G to a linksys E4200

Unanswered Question
May 5th, 2012

Hi all,

I'm a bit new to Cisco, it's been 7 years ago that I passed my CCNA. I'm setting up a new network at my home and can't get it working.

I have a Linksys E4200 that is connected to the internet.

I have a Cisco 3560G-48TS for my virtualisation project.

On this 3560 I have made some VLAN's for the vSphere environment, when I make a trunk to the dvSwitch I can ping the default gateway and the other hosts on the same VLAN but can't connect to the internet.

Port Gi0/3 is connected to the E4200, now I have internet on all PC's in VLAN1. If I switch the cable to port Gi0/1 the internet connection is gone for all PC's.

Also I can't reach the switch by IP 192.168.1.2.

I hope somebody can help.

See the running config attached.

Some extra info:

IP-address of the E4200: 192.168.1.1

IP-address of Gi0/1: 192.168.1.2

Thanks!

I have this problem too.
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Reza Sharifi Sat, 05/05/2012 - 14:17

Hi

Since you are using vlan 1 with g0/3 interface and everything works fine can you make sure g0/1 is also in vlan 1?

By default all ports are in vlan 1 until you put them in a different vlan

HTH

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chenoufimehdi Sat, 05/05/2012 - 14:19

Hi

I'd move the g0/1 config to vlan 1 inteface

( are you using DHCP for the subnets other than 192.168.1.x?  for vlan 1 I guess that the  E4200 is the server ?

if you are using static IP assignement make sure to have the correct default gateway which is the correspending SVI ?

regards

Mehdi

martgombert Sat, 05/05/2012 - 14:34

I didn't change the VLAN of port g0/1. I now changed VLAN1 to this:

interface Vlan1

description Link naar E4200 (router)

ip address 192.168.1.2 255.255.255.0

And maked g0/1 default. Still no internet on the other VLAN's.

I use the E4200 for DHCP on 192.168.1.x and wanna use my Synology for DHCP on the other subnets, but thats for later...

Reza Sharifi Sat, 05/05/2012 - 14:44

Can you post the output of

Sh ip int bri vla1?

Also

Sh ip int bri gi0/1?

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martgombert Sat, 05/05/2012 - 14:50

Switch#Sh ip int bri vla1

Interface              IP-Address      OK? Method Status                Protocol

Vlan1                  192.168.1.2     YES manual up                    up

Switch#Sh ip int bri gi0/1

Interface              IP-Address      OK? Method Status                Protocol

GigabitEthernet0/1     unassigned      YES unset  down                  down

chenoufimehdi Sat, 05/05/2012 - 15:07

can you do a traceroute to let's say 8.8.8.8 from one of the pc in other vlans ?

martgombert Sun, 05/06/2012 - 01:53

From a Windows XP client behind the dvSwitch (attached to port g0/34) in VLAN130:

c:\> tracert 8.8.8.8

Bezig met het traceren van de route naar 8.8.8.8 via maximaal 30 hops

1 2 ms 2 ms 2 ms 192.168.130.1

2 * * * Time-out bij opdracht.

Reza Sharifi Sat, 05/05/2012 - 17:14

How come port 0/1 is down? Is anything connected to this port?

Died the port go to up and up mode when you connect it to the linksys?

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pjmonline Sat, 05/05/2012 - 20:55

You could try to give the switch port connected to the 4200 an ip address in the same subnet and no switchport command. This would make the port a routed port then try the Internet again.

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martgombert Sat, 05/05/2012 - 21:38

That's how I started, but it dont work. If I make it no switchport and give it an IP address also the computers in VLAN1 dont have access to the internet.

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pjmonline Sun, 05/06/2012 - 06:36

I think the others are correct. You need a static router on the linksys router back I the other subnets/vlans.

Login to the linksys and define the routes for the other vlans and the gateway is the vlan1 management ip of the switch.

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go.michael Mon, 05/07/2012 - 06:12

I believe your Router is just not capable of handling multiple VLANs.  Once you set the IP of the router to 192.168.1.1/24, it is only aware of that network.  Plus it will only NAT IPs that are on 192.168.1.0/24.  If you want to complete that lab you can get a Cisco ASA5505 which can handle trunking with your switch or even trunk it with your ESX Vswitch.

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