Is it possible to use one or more eth ports in conjunction with the switch ports for WAN pass through?
We have many routers already deployed with their WAN IP assigned to eth 0/1, and customer equipment connected to switchports.
Our goal is to keep our router at the top of the customer's network, and allow them to use the remaining IP addresses in their public subnet on their own equipment, behind our router.
The intention is to do things like QoS, put the voice lan through the Adtran SIP Proxy, while the customer's data lan is going through their own firewall.
We've been using BVI for the WAN IP, but now we know the BVI doesn't support QoS and breaks the SIP Proxy ().
We'd also like to reserve eth 0/2 for secondary WAN failover, with the same prospect of pass through & QoS.
eth 0/1 - Primary WAN interface 126.96.36.199/29, ISP gateway 188.8.131.52
eth 0/2 - Secondary WAN interface 184.108.40.206/29, ISP gateway 220.127.116.11
switchport 0/1-0/6, vlan 20, voice lan 172.16.20.1/24 (IP phones, Adtran SIP Proxy)
switchport 0/8, vlan ?, pass through 18.104.22.168-22.214.171.124 for customer equipment (servers, data lan firewall WAN1, etc.)
switchport 0/7, vlan ?, pass through 126.96.36.199-188.8.131.52 for customer equipment (servers, data lan firewall WAN2, etc.)
calvine - You would not be able to do that without bridging or without splitting the subnet, which would have you burn 2 of the IPs in that range. Another solution you could have is just using the switchports as your WAN interface, and assigning the passthrough ports to the same VLAN.
Let me know if you have any questions.
Thank you so much noor!
This confirms my suspicion that BVI was never the way for us to go, since we need "media-gateway ip primary" and QoS on the WAN interface, neither of which seem to get along with BVI.
We had been using the switchport method before, and I think some overzealous engineer decided to "improve" things by moving to BVI, assuming it would work the same way as Brand C.
QoS will not work on BVI interfaces
BVI interface and media gateway