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Cisco Bug: CSCsg38412 - IPCP does not see incoming packets from peer

Last Modified

Jan 28, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Symptoms: When a Multilink PPP (MLP) session is established over an ISDN 
link, IPCP fails to negotiate. When the <CmdBold>debug ppp 
negotiation<noCmdBold> command is enabled, you can see that IPCP packets from 
the peer are not processed. The output of the <CmdBold>show 
interface<noCmdBold> command for the ISDN D-channel interface shows that the 
input queue limit is 0.

Conditions: This symptom is observed when the ISDN BRI or PRI interface is 
not configured as part of a dialer rotary group or dialer pool and when 
RADIUS is used to assign the multilink bundle to a VRF.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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