Two things
1. This is a PPP error, not associated with ISDN part at all
2. Protocol x8031, according to RFC 1331 (PPP protocol), is
a Network Connection Protocol, the portion of the PPP setup
that negotiates Layer 3 protocols. and is specifically associated
with "Bridging NCP".
More then likely you have Integrated Route Bridging turned on at one
router, but not the other. If both ends are Cisco box's, turn IRB off,
and
use IP for your traffic.
Hope this helps
-- Jeremiah Peace
-- Lucent Technologies
-- Systems Engineer
-- A+, MCSE,CNA,CCNA,LCTE VoIP,Definity G3
> Hi All,
>
> Does anyone came across with the error message:
>
> PPP Serialx/0:5 protocol reject received for protocol = 0x8031
>
> on ISDN line where the remote router is making the call but the data
> won't pass.
>
> The message is coming when I am doing debug: isdn q931, ppp neg., isdn
> events...into the main router.
>
> Thank you,
>
> Mike
>
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