Hi All, I just took delivery of a 3640 router with 4 port serial card, and 2 cables to connect to the serial ports of my 2 Cisco 1600r routers. The cables have DTE and DCE on either end, does it matter which end goes into the different routers? Planning to set them up as end points with the 3640 as a frame relay router.
Or should I say, it works to the point where from one PC the other works ok in one direction but not the other. I added static routes to both PC's and killed the windows firewall at both ends but it still fails. If I ping from the router connected to the end that fails to reply, it also fails. Not sure why, will take a closer look tomorrow.
I would suggest adding the static routes in the routers; it would also be better to use dynamic routing protocols. The reason is that the computer may know where to send traffic which is destined for a remote network, but if the next hop router receiving the traffic does not know where the destination network is as well, it will drop the packet.
I would suggest the following:
Network #1 (suggest 172.16.1.X / 255.255.255.0) Network #2 (suggest 172.16.1.X / 255.255.255.0) Frame-Relay Network - whatever IP addresses you decide to use; my example uses 10.1.1.1 on 1600 #1 and 10.1.1.2 on 1600 #2
PC #1 configure with an IP address (172.16.1.1), subnet mask (255.255.255.0), and a default gateway (172.16.1.254) 1600 #1 configure the eth0 with an IP address (172.16.1.254) and subnet mask (255.255.255.0) configure the frame relay elements however you are setting them up configure a static route to the remote network (ip route 172.16.2.0
PC #2 configure with an IP address (172.16.2.1), subnet mask (255.255.255.0), and a default gateway (172.16.2.254) 1600 #2 configure the eth0 with an IP address (172.16.2.254) and subnet mask (255.255.255.0) configure the frame relay elements however you are setting them up configure a static route to the remote network (ip route 172.16.1.0
I cannot go very specific on the frame-relay as you may be configuring the frame-relay any number of ways.
For testing, try to also PING the default gateway for the remote network. As an example, PC #1 can also attempt to PING 172.16.2.254, not just the host at 172.16.2.1. With frame-relay being the more complicated portion of this exercise, I would concentrate more on the frame-relay configuration and troubleshooting.
Reference this CiscoPress article which includes frame-relay switch configuration and frame-relay verification:
=========== Scott Perry =========== Indianapolis, Indiana ________________________________________