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Question

I have the network switches: 6024, 5212, and 5324. The 5212 has all our servers on it, the 5324 has client computers, and the 6024 has other devices connected to it and acts as our router between networks. The 5324 has two Vlans assigned (3,4) and has a direct uplink to the 6024.  The 5212 has two vlans assigned (2,4) and has a direct uplink to the 6024.  The clients on the 5324 can see all computers and servers on all three switches, however the servers can only see machines located on the same network.  Any help would be appreciated.

GregG1 · Answer

To accomplish this type of routing, you would configure an IP address for each VLAN on the 6024. This would be the gateway address for the clients/servers. The 5324 and 5212 would then trunk the VLANs on the uplink to the 6024.   Example:   6024 Config: console(config)# interface vlan 2 console(config-if)# ip address 192.168.2.1 /24 console(config-if)# exit console(config)# interface vlan 3 console(config-if)# ip address 192.168.3.1 /24 console(config-if)# exit console(config)# interface vlan 4 console(config-if)# ip address 192.168.4.1 /24   console(config)# interface ethernet g1   (uplink to the 5212) console(config-if)# switchport mode trunk console(config-if)# switchport trunk allowed vlan add 2,4 console(config)# interace ethernet g2    (uplink to the 5324) console(config-if)# switchport mode trunk console(config-if)# switchport trunk allowed vlan add 3,4   5324 Config:   console(config)# interface ethernet g1    (uplink to the 6024) console(config-if)# switchport mode trunk console(config-if)# switchport trunk allowed vlan add 3,4   5212 Config:   console(config)# interface ethernet 1/1   (uplink to the 6024) console(config-if)# switchport allowed vlan add 2,4 tagged

Danks · Answer

Greg,

Thanks for the reply. I already have the switches setup this way. All Vlans have IP address on the 6024. All PCs/Servers are able to communicate with eachother. I can ping back and forth. Browse to them using their UNC but when I try to use Network Neighborhood I can only see what is on the same subnet. All servers can only see the servers, all pcs can only see the pcs.

J

GregG1 · Answer

Network Neighborhood uses NetBIOS, which uses broadcast traffic. By default, broadcasts do not cross routers. You would need to use the 'helper-address' command to forward NetBIOS traffic. See the following link to the online CLI Guide for more information:

Danks · Answer

So do I forward for interface to interface or interface to a specific machine?

GregG1 · Answer

The helper-address command should be used to forward the broadcasts from one network to the address of the server providing the service on another network.

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