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tbonetony1
Beginner

Layer 3 Switch help needed

I have a Cisco ME 3400 Layer 3 switch connecting via fiber link to a B&B SEG510-2SFP-T layer 2 switch with multiple devices in separate subnets and vlans connecting to the layer 2 switch.  The diagram below shows the basic layout.    I have the following interfaces configured on the Cisco Switch:

 

Interface             IP-Address     OK? Method Status               Protocol
Vlan1                 192.168.1.4   YES manual up                   up
Vlan51               10.174.241.99 YES manual up                   up
Vlan71               10.173.241.99 YES manual up                   up
Vlan151               10.174.247.99 YES manual up                   up
Vlan171               10.173.247.99 YES manual up                   up
Vlan251               10.174.245.99 YES manual up                   up
Vlan271               10.173.245.99 YES manual up                   up
Vlan351               10.174.246.99 YES manual up                   up
Vlan371               10.173.246.99 YES manual up                   up

 

From the layer 3 switch I'm unable to ping the camera that is connected to the layer 2 switch at 10.173.245.24.  

When I attempt to add a route on the Cisco switch such as: ip route 10.173.245.24 255.255.255.0 10.173.241.24 I get the error: %Inconsistent address and mask

 

I am also unable to ping if I add the route as: ip route 10.173.245.0 255.255.255.0 10.173.241.24 tag 271   

Please help point me in the right direction.

Layer3HelpNeeded.png

1 ACCEPTED SOLUTION

Accepted Solutions

Thanks everyone for the help.  We got it figured out by calling eworx support and they helped us understand trunking their layer 2 switch.

View solution in original post

6 REPLIES 6
Georg Pauwen
VIP Expert

Hello,

 

in theory, you don't need any static routes, as all inter Vlan routing is done on the ME3400. Are both links connecting the devices configured as trunks allowing all Vlans ?

Thank you so much for your response.  Yes, the switch port 1 is trunked on the Layer 3, however the layer 2 switch is somewhat confusing.  I think you are onto the issue, I just have to figure out how to trunk the port on this B+B SEG510-2SFP-T layer 2 switch.

This is what my cisco switch trunked port looks like (I removed the ip routing per your suggestion.)

Switch#sh interfaces trunk

Port Mode Encapsulation Status

Native vlan Gi0/3 on 802.1q trunking 1

 

Port Vlans allowed on trunk Gi0/3 1-4094

 

Port Vlans allowed and active in management domain Gi0/3 1,31,51,71,151,171,251,271,351,371

 

Port Vlans in spanning tree forwarding state and not pruned Gi0/3 1,31,51,71,151,171,251,271,351,371

try to allow all vlans on your trunk interfaces and check native vlan and mgmt vlan on all switches

Thank you for the suggestion.  This layer 2 switch is a little difficult understanding.  Port 4 is the camera and port 9 is the link to the layer 3 switch (the layer 3 switchport is indeed trunked.)

 

!

interface gi4

 switchport mode hybrid

 switchport hybrid pvid 271

 switchport hybrid allowed vlan add 271 tagged

 switchport hybrid allowed vlan add 71 untagged

 switchport hybrid allowed vlan remove 1

 no spanning-tree link-type point-to-point

!

interface gi9

 switchport mode hybrid

 switchport hybrid pvid 71

 switchport hybrid allowed vlan add 1,21,31,51,71,81,111,121,171,271,371 tagged

 switchport default-vlan tagged

 no spanning-tree link-type point-to-point

interface lag1

 switchport mode hybrid

 switchport hybrid allowed vlan add 71,171,271,371 tagged

 no spanning-tree link-type point-to-point

!

interface lag2

 switchport mode hybrid

 switchport hybrid allowed vlan add 71,171,271,371 tagged

 no spanning-tree link-type point-to-point

Thanks everyone for the help.  We got it figured out by calling eworx support and they helped us understand trunking their layer 2 switch.

View solution in original post