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October 22nd, 2014 16:00

N3024P - VLAN routing issue

I have a single Dell Powerconnect N3024p  it is configured in L2 mode and is configured with 3 VLANS.   VLAN 1 the default is configured on ports 21 - 24,  Vlan 10 is configured on ports 1-14, and VLAN 200 on ports 15 - 20.   All ports are currently access ports and the ports only belong to one vlan.   Port 1 (vlan 10) is connected to my firewall router on port 1 which is also configured as an access port for vlan 10.   I have desktops and servers connected to switch ports 2 - 14, and everything works great there.  switch port 15 is connected to firewall port 2 which is configured as access port vlan 200.   Here is where I have trouble.

I am using my firewall / router (juniper srx) to route the traffic between vlans and out to another location via site to site vpn.   From vlan 10 (any device on my switch), I can ping my vlan 10 gateway address on my router, my vlan 200 gateway address on my router and I can ping addresses across my wan.  but I can not ping anything on ports 15 - 20(vlan 200) on my dell switch.  Devices on ports 15-20, and ping each other but not the VLAN 200 gateway on the router nor any other ip address.   I have confirmed that there is nothing wrong with the patch cable and have tried the same configuration, but using different switch ports.   I am at a loss as to what is going on.    Why does vlan 10 work and not vlan 200.

If anyone has any insight, suggestions, etc.  I would appreciate it.  

36 Posts

October 22nd, 2014 17:00

It appears that my problem is Spanning Tree.   even though the two connections are separate VLANs one of them is set to root and forwarding and the other to alternate and discarding.   For the moment I am going to turn off spanning tree, since I only have 1 switch and the router in this network - so far.   But I need to know with this switch how to have separate spanning trees for each vlan.

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October 22nd, 2014 18:00

Hi,

You would use the command spanning-tree mode rapid-pvst

 

Page 753 ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/networking-n3000-series_Deployment%20Guide4_en-us.pdf

 

Page 756 ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/networking-n3000-series_Administrator%20Guide3_en-us.pdf

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