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Cisco Bug: CSCum14117 - Multilink PPP Issues with VWIC2 Module on 2900 and 3900 platforms

Last Modified

Jun 29, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

15.1(4)M2

Description (partial)

Symptom:
Issues with Multilink PPP on VWIC2 Cards is seen with Cisco IOS versions 15.2(4)M4 and 15.1(4)M7, which contains the bug fix of CSCud56450. 

With any of the above or later IOS versions we see errors like "lost fragments"
and several errors under the Multilink Bundled on the T1/E1 Serial ports of
"VWIC2-[1/2]MFT-T1/E1" Multiflex card module.

Conditions:
Issue is seen in the IOS versions which are later to or contain the bug fix of CSCud56450.

Issue seen with multilink configuration and VWIC2 cards.
    
 Issue NOT seen in the following configurations:
      a) NOT seen WITHOUT multilink configuration.
      b) Also issue NOT seen on VWIC3 cards with Multilink  configured.
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