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3-Com to 3-Com PPP over ISDN

3-Com to 3-Com PPP over ISDN

3-Com to 3-Com PPP over ISDN

Can anyone help, please. We are intending to migrate from 3-Com AccessBuilder7000 with 4 x 4Mb router cards and 1 primo card with 1 PRI bearer, to a Cisco 3640. At the remote sites we have OfficeConnect 510's. We use unnumbered links and default FastConnect. As a precursor to migration we want to switch to PPP using CHAP. Using 1 test site, it pings fine (both ways) and can log in to server on remote LAN using PPP. However, if we try to copy a largish file (say > 1Mb), in tracewindow I spot the following error message:-
(  7,  35, 677926856) MLIF_OUTPUT: Failed to send raw to br01.mltk.dv (
(  7,  36, 677926857) IP_INROUTE: Failed to send to via br01.mltk.dv
- calling ICMP1
and the transfer hangs. However, if we switch back to FastConnect, we still get the message in tracewindow, yet file transfer continues.
Has anybody got any ideas ? Thanks.

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