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Community Member

ISDN interesting Traffic (natted IP)

Hi all

I have a router that has only an ISDN connection to the WAN

so i did the usual BRI configuration and configured and DIAL GROUP for the interesting traffic

The issue is that only 1 IP can initiate the ISDN call, and that IP is natted

ip nat inside source static x.x.x.x y.y.y.y

int fa0/0

ip nat inside

int BRI0/0

ip nat outside

My question is, should I configure the access list of the interesting traffic (dialer-list) to match the traffic with IP source before being natted (x.x.x.x) or after being natted (y.y.y.y)

1 REPLY
Hall of Fame Super Silver

Re: ISDN interesting Traffic (natted IP)

Hello Georges,

I think after the translation but there are tools that can help:

debug dialer

that can tell you the reason for DDR triggering and shows source and destination of the packet

Hope to help

Giuseppe

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