Ok, so this is the situation: I have 2 separate offices which need to communicate with each other. For that purpose we have 2 basic ISDN accesses on the offices. And now we have to configure 2 Cisco Series 870 so that one of the offices can access a printer on the other office.
Here are the Ip's in question:
Local Network on Office A: 10.112.148.0 - 255.255.255.0
WAN IP of Office A Router:10.112.150.5 - 255.255.255.252
Office B Printer: 10.112.149.6 - 255.255.255.252
WAN IP of Office B Router:10.112.150.6 - 255.255.255.252
Office B IDSN Dial Up Number: 222222222
Ok...so the purpose is, when someone in office A needs to print something on office B, the office A router dials up to the office B router which accepts it's calls.
I've configured the routers, and I wanted to know if they are correctly configured. Please check it out, and if you see anything wrong please tell me.
To almost mimic what you have in officA1 under BRI0. I don't believe your Dialer1 setup is needed unless you were backup up a frame or serial connection.
Just remember to have the office B1's local spids 1&2 specified under BRI0 and to point back to the remote officeA1 in the dialer map command.
It'll probably look like this:
ip address 10.112.150.6 255.255.255.252
dialer idle-timeout 30
dialer map ip 10.112.150.5 name remoteOfficeA_876 5552224444
isdn switch-type basic-net3
isdn spid1 22222222220101 (office B's local spid1)
isdn spid2 22222222230101 (office B's local spid2)
arp timeout 0
ppp authentication chap callin
Use and 'isdn call' command if you're having trouble initiating the call (look up for further details). There are some debug like 'debug ppp negotiation' or 'debug ppp authentication' that help if you are having trouble.
the ISDN configuration looks like correct and you don't need SPIDs.
However, if you want to use the printer from PCs using Windows networking you may need some ip helper address x.x.x.x command inside the vlan 1 in office A in order to be able to propagate the search for printer.
To test that the ISDN configuration is working you can ping the ip address of the printer from the office-A router using a source of vlan1's ip address.
In a real world scenario you should define in a more precise way the interesting traffic to avoid to use the isdn link too much. Unless you are in Germany where you pay a flat rate for isdn you need to limit the circuit usage.
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