Hello All,

     Here is what I have:
Cisco 1721 Router
2 CSU/DSU WICs
1 Ethernet Port to Network
HDLC Connection from Sprint
HDLC Connection from QWEST
Blocks of 32 IP addresses from each provider

   Here is what I have so far:

    I have both T1 lines running into the router, both of the serial
ports/CSU-DSU appear to be fine and are showing UP. The Problem I am running
into is when I set the ethernet port to a Primary and a Secondary IP
address. I am setting these with numbers from the IP address block that was
given to me from QWEST and Sprint. So in essence I have this:

ip address 65.X.X.X  255.X.X.X  QWEST
ip address 65.X.X.X  255.X.X.X  Sprint  Secondary

ip address 65.X.X.X   255.X.X.X   Serial0
ip address 65.X.X.X.  255.X.X.X. Serial1

So my question is this: will this configuration work and if not what do I
need to change: From what I understand I cannot use a subinterface and I
cannot NAT.

Thanks,

Terry O




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