atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's combining T1's

Hey all, can anyone help one of my customers with this?

As you know, Thom has a T1 as his main data circuit and has brought in the integrated T1 for failover of his phone and data. The main T1 is being handed off to me as Ethernet after going through the XOs Adtran router and I have it then going into a Pix 506e. The integrated T1 is also being handed off to me after going through an XO supplied Adtran. I need a solution which will take these 2 data circuits and handle seamless failover and also hopefully load balance them. I would put a cisco 2600 router in place and do it that way by removing the ISP routers, but since the 2nd data circuit is an integrated T1, it has to go through the ISPs router to separate the trunks for voice and data I believe.

Thanks

The adtran unit on the fractional T is not a router, it should be handing of a routable IP on the DATA side.

https://www.fatpipeinc.com/

Check these guys out. You can cluster circuits from different providers with this.

The Adtran 3430 can do what you are looking for.

I have a customer that has a full t-1 coming into a NIM card on the back of the Netvanta 3430 and a time warner cable circuit handed off as ethernet.

The T-1 is set as priority and the Cable modem is for backup.

Works just fine.

Cisco 2600 will work also just need 2 wan ports on it...

You can request that the both of the circuits are handed off as t-1 thru the adtran channel banks. and then use a the cisco 2600 to do load balancing.

If you want to just leave them you may find a fortinet dealer or call fortinet directly and get a firewall that will function with 2 ethernet links.

Just an added note, if you do use a cisco for load balancing between two different carrier T1s, I would make sure that you use the default per destination NOT per packet. This makes sure that you aren't sending packets for the same session over two different carriers which in turn will create lots of problems.

Personally, I'm a "BIG" fan of MLPPP in a Cisco with two equal value data links. It's fast to adjust to circuit drops and in most cases the client doesn't see anything other than a temporary hiccup. Of course, for this, both circuits have to terminate with the same carrier on the same enterprise router at the ISP side.

Rusty, the Adtran can be a router (Total Access 600 Series is typical for XO) it just needs to have NAT disabled to have the ethernet handoff that DnR needs. The alternative is they could bridge the adtran router but then the carrier loses data access into the channel bank which is not recommended because you then lose all remote monitoring and testing capability.

Fred