Hi folks,
I've been gone for a while (focusing on network security), but I'm back! I
saw a few old friend's names on the list but also missed a few.
Anyway, here's a problem I'm working on. Perhaps you'll find it interesting,
too.
Hardware Configuration:
Central office running 10.0/8 network. New Cisco 802 (1 etherent, one bri).
Two remote locations, each with an ISDN adapter card in the PC. Central
office and remote locations have Centrex-like service, so only 4 digits need
to be dialed. No per minute costs on ISDN for "inside" calls.
This setup is to replace 33K modems (I tried 56K, but connection speed was
usually around 28K). One B-channel will be fine for these users.
Each ISDN installation was tested by calling out to an ISP and establishing
connectivity (Thus, spids OK, switch-type OK, lines working, etc).
Design,
Make the ISDN cloud its own network, 10.0.76.0 /24
BRI interface on the router is .1, at the remote locations it is .4 and .7
Each remote station has its own ethernet adapter, with a separate IP
network.
Static routes in the 802 cover traffic to the remote sites' networks.
Here's the pertinent part of the config.
interface Dialer1
ip address 10.0.76.1 255.255.255.0
no ip directed-broadcast
no ip proxy-arp
encapsulation ppp
no ip split-horizon
dialer in-band
dialer idle-timeout 2000000
dialer map ip 10.0.76.4 5004
dialer map ip 10.0.76.7 5007
dialer hold-queue 10
no cdp enable
!
ip http server
ip classless
ip route 10.0.67.0 255.255.255.252 10.0.76.7
ip route 10.1.45.0 255.255.255.252 10.0.76.4
!
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