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Author Topic: Ask About Trunking And Tagged ?  (Read 416 times)

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Offline superbaim

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Ask About Trunking And Tagged ?
« on: November 27, 2011, 11:38:28 PM »


i have this vlan in port which is all not tagged ,

ID     vlan-name       ip / subnet                 port              desc
17    vlan-17      10.16.22.0/24      Port 1/17         marketing 
2   vlan-2      10.16.30.0/24      Port 7/20        vlan-server(dhcp,dns,dll) 
100   vlan-100           10.16.100.0/30      Port 7/1          vlan to firewall

All user in vlan-17 can access internet and got dhcp address and dns resolve .
but now in port 1/17 i must add another vlan and subnet for voice like this :
ID     vlan-name       ip / subnet                 port              desc
18         vlan-18          10.16.23.0/24             port 1/17       marketing-voip 

but when i create vlan and assign ip for marketing voip and config "Perform Tagged" in port 1/17 and ad vlan-17 and vlan-18 as a member vlan for that port, i cant access dhcp or dns from switch(juniper) connected to that port ?

thx



Offline Michael McNamara

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    • Michael McNamara
Re: Ask About Trunking And Tagged ?
« Reply #1 on: November 28, 2011, 09:25:18 AM »
You seem a bit confused... you need to add routing not trunking.

You need to add a router interface to VLAN 18 (10.16.23.1), you need to add a route from your firewall back to 10.16.23.0/24. You need to add a NAT range for 10.16.23.0/24, you need to add 10.16.23.0/24 to your firewall policy.

Good Luck!
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Offline brazenhead

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Re: Ask About Trunking And Tagged ?
« Reply #2 on: November 29, 2011, 11:46:28 AM »
Did you verify that the tagging and vlans are set up properly on both side of the link? Are the computers that cannot to dhcp on the juniper switch in vlan 17 or vlan 18?