Management Vlan Routing issue.

[venturas05]

We currently have 1 6509 and 3 4507's setup as layer 3 switches with trunks between them. I am working to create layer 3 connections between them to cut down on broadcast traffic. I have configured new management vlans on each one because the management vlan is the only vlan that spanned the entire network. I have created 4 mgmt vlans 400-403 with IP's 10.254.0.0/20 10.254.16.0/20 10.254.32.0/20 and 10.254.48.0/20. I can get all the switches moved to the .0, .32, and .48 networks but have been unsuccessful with the .16 subnet. The Vlan interface is 10.254.17.1 which is also the default gateway I am using. The first switches I made changes too I couldn't ping anything within the network. I was using 10.254.20.1 and 10.254.19.1 on seperate buildings. I can ping 10.254.17.1 from other LAN's within the network however, even with the old mgmt vlan still functioning I cannot ping the 10.254.17.1 from the switches connected to the 4507 with this interface configured. I have not asked for assistance of this magnitude on here before so please let me know the read outs you would require to assist me or if I need to clearify anything. The routing protocol is eigrp and in the routing table I see that vlan 401 network 10.254.16.0/20 is directly connected.

[venturas05]

Here are the show commands you asked for.

[Richard Burts]

Anthony

Thanks for posting the outputs that I asked about. I see in the output from the 3750 that vlan 401 is shut down. Was that the case when you were doing your test?

HTH

Rick

[venturas05]

No it wasn't the case when I did the test this is what I did:

1. I enabled Vlan 401

2. I tried to ping 10.254.17.1 which was unsuccessful.

3. I set int vlan 1 to shutdown and no ip address

4. I changed default gateway from 10.139.1.1 to 10.254.17.1

5. I tried to ping 10.254.17.1 which was unsuccessful.

6. I then took a capture of the show commands indicating the pruning of vlan 401 on the 4507.

7. Once all was completed I tested the ip route 0.0.0.0 0.0.0.0 10.254.17.1 which was again unsuccessful.

Finally, I set everything back to vlan 1 and shutdown vlan 401.

Thank you,
Anthony

[paul driver]

Hello

Is this what you applied?

4507
Ip routing
Vlan 401
Exit

Int LAN 401
IP address x.x.x.x y.y.y.y

Default interface xxx
Int xxx
Description link to 3750
Switchport trunk encap dot1q
Switchport mode trunk
No shut

Spanning -tree vlan 401 priority 0



3750
No Ip routing
Vlan 401
Exit

Int LAN 401
IP address x.x.x.x y.y.y.y


Default interface xxx
Int xxx
Description Link to 4507
Switchport trunk encap dot1q
Switchport mode trunk
No shut

Ip default-gateway

Wait until vlan comes up (approx 60 secs)

Sh vlan brief
Sh spanning-tree vlan 401



Res
Paul


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[venturas05]

Basically yes minus the span tree priority 0. We have one switch set for all vlans as root. Which is in my plans to fix. Ive only been on this network for a year and have a lot of work left to get it where it needs to be.


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