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Cisco Bug: CSCta97117 - 3.8.2/3.9 pim & mul-routing MVPN config changes not backward compatible

Last Modified

Jan 05, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

3.8.2.BASE 3.9.0.BASE 3.9.2.BASE 4.1.1.ROUT

Description (partial)

 Basic Description:
 3.8.2/3.9 pim and multicast-routing MVPN config changes not backward compatible. 
 Multicast configuration failures on downgrade from 3.8.2/3.9. 
 The multicast configuration structure has changed in 3.8.2/3.9. In previous
releases, each VRF under multicast-routing and router pim configurations used
to be in a separate submode but after the change, the configuration is in a
hierarchical format, similar to other routing protocols. This was also required
for the multicast XML support in 3.8.2/3.9. Due to this change, when
downgrading from 3.8.2/3.9 to earlier releases, the multicast-routing and
router pim MVPN (VRF) configurations will be rejected. The failure will be
shown in the output of "show configuration failed startup".
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