x.25 problem

Unanswered Question
Sep 10th, 2007

I have in my network three routers that have this setup. R1<--->R2<--->R3. Connection between R1 and R2 is serial whilst that between R2 and R3 is ethernet.I have an X25 client connected to R1 as ^104 and from R1 and R2,the client is reachable when I do "pad 104".However,when I try to access thesame client from R3 using "pad 104",I get the message " % Connection refused by remote host"


Can anybody tell me what needs to be done in order to get R3 access the X25 client coonected to R1.



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Paolo Bevilacqua Mon, 09/10/2007 - 10:39

Hi, you would need to X.25 over ethernet or X.25 over IP (XOT) to do pad natively from R3. Since it kind of awkward to do this, perhaps you are better configuring protocol translation (either 1 or 2 steps method) so that telnet from R3 would become pad on r1.


Hope this helps, please rate post if it does!

xhackuss1 Mon, 09/10/2007 - 23:34

thanks a lot for responding to my problem.

Could you please have a look at my configs and make suggestions. Also,could you possibly show me how to configure the protocol translation as you suggested.


For R1

-------

int serial1/0:0

ip address 10.3.x.206 255.255.255.252



interface Serial0/2

ip address 10.3.x.141 255.255.255.252

encapsulation x25 dce

no ip route-cache

no ip mroute-cache

x25 address 104

x25 htc 32

x25 ips 256

x25 ops 256

clockrate 64000

lapb T1 2000

lapb N2 10


x25 route ^104 interface Serial0/2

x25 route ^900 xot 10.3.w.39 10.3.w.71


R1# sh cdp nei det

Entry address(es):

IP address: 10.3.x.205

Interface: Serial1/0:0, Port ID (outgoing port): Serial1/0:0





For R2

-------

int s1/0:0

ip address 10.3.x.205 255.255.255.252



x25 route ^900 xot 10.x.y.2

x25 route ^104 xot 10.3.x.141 10.3.x.109


R2#sh cdp nei det

Entry address(es):

IP address: 10.3.x.206

Interface: Serial1/0:0, Port ID (outgoing port): Serial1/0:0


Entry address(es):

IP address: 10.3.w.73

Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1



For R3

-------

int fa0/1

ip address 10.3.w.73 255.255.255.224



R3#sh cdp nei det

Entry address(es):

IP address: 10.3.w.71

Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1



x25 route ^104 xot 10.3.w.71 10.3.w.39

x25 route ^104 xot 10.3.x.141



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