mxrider_420
asked on
CCisco 1242 & VLAN
Here is my equipment
CIsco 1242 AP
HP Procurve 1700 switch
linksys business class router RSV4000
windows 2003 server
TheQUestion:
i am new at the vlan thing and need some help. I want to create 2 SSID's on the G radio of my Cisco 1242AP. i know i need vlans. so how do i trunk this and how do i create another scope for DHCP if my router only has 1 gateway address? do i need another router to trunk to? i know i need to create a vlan for the new SSID but how do i trunk from the switch to the router and how do i give the clients of ssid2 an ip from 192.168.5.0 network for guests when all the rest of my network is on 192.168.1.0 network
thanks
CIsco 1242 AP
HP Procurve 1700 switch
linksys business class router RSV4000
windows 2003 server
TheQUestion:
i am new at the vlan thing and need some help. I want to create 2 SSID's on the G radio of my Cisco 1242AP. i know i need vlans. so how do i trunk this and how do i create another scope for DHCP if my router only has 1 gateway address? do i need another router to trunk to? i know i need to create a vlan for the new SSID but how do i trunk from the switch to the router and how do i give the clients of ssid2 an ip from 192.168.5.0 network for guests when all the rest of my network is on 192.168.1.0 network
thanks
ASKER CERTIFIED SOLUTION
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ASKER
also. my Linksys router doesnt allow for different DHCP to be served from it. it only allows 1 scope which is why i am using DHCP from wink2k3 server but i dont know how to give the new scope a gateway when the router only has 1 interface.
Okay as far as dhcp goes, you need to set up the linkssys router on each vlan to have dhcp relay enabled. There should be a check box for dhcp relay and then you will have a field to plug in the ip address of the dhcp server. From a win2k perspective, you simply need to create the scopes, when the relay occurs, the router will send the ip address of the vlan that the request is coming from, and that is how the win2k dhcp server will know what scope to use.
As far as the trunking it should be like this.
On the AP set vlan 10 to be the native vlan. Make sure you assign an ip address to the bvi1 inteface on the AP that will be on vlan 10.
On the port on the hp where the AP connects, you need to define that vlan 10 will be untagged and vlan 20 will be tagged.
One the port on the hp where the linksys router will connect, you need to define that vlan 10 will be untagged and vlan 20 will be tagged.
On the linksys router make sure you set up vlan 10 as the native vlan or the untagged vlan. (cisco terminology for the untagged vlan is the native vlan, but not sure if linksys will show this as native or untagged.
Trunking is simply how you carry more than one vlan's traffic across an interface. When you trunk the untagged vlans or the native vlans need to match, you can only have one untagged vlan on a trunk, the rest of the vlans on the trunk will be tagged.
So the connection between the ap and the hp is a trunk and so is the connection from the linksys to the hp.
Hope that helps.
As far as the trunking it should be like this.
On the AP set vlan 10 to be the native vlan. Make sure you assign an ip address to the bvi1 inteface on the AP that will be on vlan 10.
On the port on the hp where the AP connects, you need to define that vlan 10 will be untagged and vlan 20 will be tagged.
One the port on the hp where the linksys router will connect, you need to define that vlan 10 will be untagged and vlan 20 will be tagged.
On the linksys router make sure you set up vlan 10 as the native vlan or the untagged vlan. (cisco terminology for the untagged vlan is the native vlan, but not sure if linksys will show this as native or untagged.
Trunking is simply how you carry more than one vlan's traffic across an interface. When you trunk the untagged vlans or the native vlans need to match, you can only have one untagged vlan on a trunk, the rest of the vlans on the trunk will be tagged.
So the connection between the ap and the hp is a trunk and so is the connection from the linksys to the hp.
Hope that helps.
ASKER
This helps alot. my last question was with DHCP and how to provide a secondary scope for the non native vlan (20) from my win2k3 server. My Linksys router has dhcp forwarding on it but how will the server define what clients or vlans get what ip addresses? i need to make vlan 10 network (native) and vlan 20 guest or internet only, but if the DHCP is coming from the win2k3 server thats on the network (native) vlan how do i control the access and how does the second scope identify who gets what?
thanks
thanks
SOLUTION
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ASKER
Ok, this helps majorly. so basically i already have DHCP forwarded to the win2k3 server so this should be all set to go once i configure the vlans correctly. Now my only other inquiry is about what if any vlan the win2k3 server needs to be on. or can it just stay on the default management one that its currently on or do i need trunking to the server too?
thanks so much your great help!
thanks so much your great help!
no the dhcp server can stay where its at. no trunking to the dhcp server needed.
ASKER