At 12:48 PM 1/4/98 -0500, you wrote:
> Just being curious, but if I have two 2503's on two ends of an isdn
>line, can I use HDLC over said ISDN Link or is PPP required? If you can do
>HDLC, what version of IOS?
No problem using Cisco HDLC over ISDN between 2 Cisco routers, but it is
recommended that you use PPP for the authentication options since ISDN is a
public network service. HDLC does not have any authentication similar to
PAP/CHAP in PPP.
Randy
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