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Upgrading WAN from Point-to-Point T1s to AT&T Ethernet Services
I am finally upgrading 6 buildings to fiber and decided with the any-to-any configuration. I just received an email regarding Vlan IDs for each building.
Currently the T1s are configured on serial interfaces on Cisco router and their IPs are on a different subnet compared to the LANs subnet for that particular building.
i.e. Building #1 - LAN is 192.168.8.0/24 and the serial Int is 192.168.9.1 and 192.168.9.2 for each end of the T1.
Should I keep this type of reasoning for the fiber?
I.e Building #1 - LAN is 192.168.8.0/24 and the Fiber VLAN ID is 9
AT& T wants a list of VLAN IDs but i want to make sure i am setting this up correctly.
Currently the T1s are configured on serial interfaces on Cisco router and their IPs are on a different subnet compared to the LANs subnet for that particular building.
i.e. Building #1 - LAN is 192.168.8.0/24 and the serial Int is 192.168.9.1 and 192.168.9.2 for each end of the T1.
Should I keep this type of reasoning for the fiber?
I.e Building #1 - LAN is 192.168.8.0/24 and the Fiber VLAN ID is 9
AT& T wants a list of VLAN IDs but i want to make sure i am setting this up correctly.
ASKER
They still wanted vlans.
So this is what I was thinking.
using GE0/2 on the Cisco 3945
Router_A(config)#interface gigabitethernet 0/2
Router_A(config-if)#no shutdown
Router_A(config-if)#interf ace gigabitethernet 0/2.1
Router_A(config-subif)#enc apsulation dot1q 5
Router_A(config-subif)#ip address 192.168.5.1 255.255.255.0
Router_A(config-if)#interf ace gigabitethernet 0/2.2
Router_A(config-subif)#enc apsulation dot1q 7
Router_A(config-subif)#ip address 192.168.7.1 255.255.255.0
Router_A(config-if)#interf ace gigabitethernet 0/2.3
Router_A(config-subif)#enc apsulation dot1q 9
Router_A(config-subif)#ip address 192.168.9.1 255.255.255.0
Router_A(config-subif)#end
I would continue this for the remaining buildings?
So this is what I was thinking.
using GE0/2 on the Cisco 3945
Router_A(config)#interface
Router_A(config-if)#no shutdown
Router_A(config-if)#interf
Router_A(config-subif)#enc
Router_A(config-subif)#ip address 192.168.5.1 255.255.255.0
Router_A(config-if)#interf
Router_A(config-subif)#enc
Router_A(config-subif)#ip address 192.168.7.1 255.255.255.0
Router_A(config-if)#interf
Router_A(config-subif)#enc
Router_A(config-subif)#ip address 192.168.9.1 255.255.255.0
Router_A(config-subif)#end
I would continue this for the remaining buildings?
What device does this new fiber terminate on? If it's a router, I don't understand the purpose of defining multiple VLANs on that link.
Are the new links running from a central site to each remote site? Or is it a LAN service where each site can communicate with all other sites directly?
Are the new links running from a central site to each remote site? Or is it a LAN service where each site can communicate with all other sites directly?
ASKER
LAN service - Multipoint
New Fiber terminates on a Ciena 3930 Switch with optical hand-off.
Dont know why either; just confused now.
New Fiber terminates on a Ciena 3930 Switch with optical hand-off.
Dont know why either; just confused now.
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ASKER
I just emailed the PM for the project and questioned why i need to use vlans and now they are siding with me. So i have a conference call with their engineer to tell them i would like to use my routers, not switches, for this multipoint setup.
ASKER
The 3930 switch was provided by AT&T and i have requested a copy of their config and have not received anything. But since i was a granted a new meeting with one of their engineers; I will requesting them to change the setup so I can utilize my Cisco routers.
Since your current model is with the WAN links as a layer-3 service, I would stick with that.
Which means, as far as AT&T is concerned, VLANs are irrelevant. Just tell them you'll have a router at each location.