Inter_vlan Problem

pannupandit

I am not able to attach the Topology Diagram of the Network. Actually this setup is for inter-vlan routing. And technique I am using is Router on Stick. The Gi0/0 interface of router is divided into two sub-interfaces Gi0/0.221 & Gi0/0.205. This Trunk port is connecting to port no. Fa0/1 of switch01 and is a Trunk Port. The Port 7 of switch01 is connected to port 1 of switch02 which are in VLAN 221. Port 8 is connected to port 6 of switch03 which are in VLAN 205. All the 3 switches are acting as Layer 3 switches as I have defined L3 Vlans on all the switches and VLAN database file of switches is different.

I have created VLAN221 on switch01 & switch02 with ip range 10.80.221.16/28. And VLAN 205 is created on switch01 & swith 03 with ip range 10.80.205.16/28.

Apart from it VLAN 200 is created on Switch02 with IP Range 10.35.61.0/24 and an interface 10.35.61.1/24 is also configured in this Vlan which is acting as default gateway of all the users that are connecting to this switch.

Similarly Vlan 110 is created on switch03 with IP range 10.33.28.0/24 and an interface with IP address 10.33.28.1/24 is also created in this VLAN which is acting as a default-gateway for all the users connecting to this switch.


I have enabled IP-Routing on all the switches and have configured following routes respectively on the switch02 & switch03.

Switch02 :-
10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
C 10.35.61.0/24 is directly connected, Vlan200
S 10.33.28.0/24 [1/0] via 10.80.221.17
C 10.80.221.16/28 is directly connected, Vlan221

Switch03:-
10.0.0.0/8 is variably subnetted, 21 subnets, 6 masks
S 10.35.61.0/24 [1/0] via 10.80.205.17
C 10.33.28.0/24 is directly connected, Vlan110
C 10.80.205.16/28 is directly connected, Vlan205

The Problem is that the Users in VLAN 200 are able to ping the users in VLAN 110 and Vice-versa. users in VLAN110 are able to ping the VLAN interface of VLAN 200 on switch02 but from switch02, I am not able to ping the users of VLAN110.

Please Explain.

If I am putting a route for subnet 10.80.221.16/28 on switch03 then switch02 is able toping the users of VLAN110.[/img][/url]

gojericho0

pannupandit wrote:

The Problem is that the Users in VLAN 200 are able to ping the users in VLAN 110 and Vice-versa. users in VLAN110 are able to ping the VLAN interface of VLAN 200 on switch02 but from switch02, I am not able to ping the users of VLAN110.

If the users can ping eachother and they are on different VLANs on different switches your problem isn't routing.

Can you do a debug ip packet detail on SW2 and SW3 when SW2 is trying to ping a PC on VLAN110

pannupandit

I have enabled debugging. no message is coming on console.

gojericho0

if you are using telnet you have to enter the terminal monitor command

scheistermeister

All the 3 switches are acting as Layer 3 switches

So what is the point of having the router on a stick? If all three switches are L3 switches and running a routing protocol there is no need for a router on a stick...

pannupandit

hi scheistermeister

That I also know. But this is the topology planned by project team. But the thing that I am asking...please tell me that solution.

scheistermeister

I would say that switch 2 is not advertising it's route to 10.80.221.16/28 to switch 1 to be advertised to switch 3.

In other words switch 2 can ping switch 3 fine, but switch 3 does not know how to reply to switch 2.

Just a guess though without seeing the configs, can you post them up?

pannupandit

But Boss, switch2 is communicating with switch 3 through router only and not through switch01 and in that case switch02 is directly connected to router Gi0/0 sub-interface with the help of switch01.

My problem is that users connected to switches02 & 03 are able to communicate but switch02 is not pinging neither the users nor the switch03.

dtlokee

pannupandit wrote:

But Boss, switch2 is communicating with switch 3 through router only and not through switch01 and in that case switch02 is directly connected to router Gi0/0 sub-interface with the help of switch01.

My problem is that users connected to switches02 & 03 are able to communicate but switch02 is not pinging neither the users nor the switch03.

Make sure you have the SVI assigned to the correct VLAN and your IP addressing is correct for the switch. It's difficult to understand your topology without a diagram or something.

pannupandit

can u plz tell me, how to load topology diagram here?