Specifications

1264
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S5
Conditions: This symptom is observed on a Cisco 12416 that runs the c12kprp-p-mz image of a
Cisco IOS interim release for Release 12.0(31)S and that is configured with dual PRPs and 4-port
OC-12 POS ISE line card that has a service policy attached to each of its interfaces.
Following are examples of configurations that may trigger the symptoms:
policy-map testing-input
class class-default
police cir percent 2 pir percent 4
conform-action set-mpls-exp-imposition-transmit 4
exceed-action set-mpls-exp-imposition-transmit 1
violate-action drop
!
map-class frame-relay testing
service-policy input testing-input
interface POS6/0
frame-relay interface-dlci 17 switched
class testing
Workaround: There is no workaround.
• CSCeh02579
Symptoms: A multilink bundle on a Cisco 10000 series may lock up. The multilink bundle may
transmit packets but does not process any incoming packets, indicating that all links of the bundle
are in an out-of-order state and draining.
Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS
Release 12.0(25)SX, Release 12.0(26)S4, or a later 12.0S release and that is configured for mVPN
and MLP. The symptom may be platform-independent.
Workaround: If this is an option, disable mVPN.
• CSCeh07851
Symptoms: There are several symptoms:
- Multicast traffic may be punted to the RP with the "no group" reason, even if (*,G) and (S,G) exist
on the PXF. You can observe the punted traffic in the output of the show hardware pxf cpu
statistics diversion command.
- PIM neighbors across an MDT in an MVPN network may flap.
Conditions: This symptom is rarely observed when either PXF or the router is rebooted or reloaded
while traffic runs in the network. When the router has a large configuration or when many multicast
streams pass through the router, the probability of the symptom occurring increases.
Workaround: Make a note of the traffic streams that are punted to the RP by entering the show
hardware pxf cpu statistics spd command. Then, clear these traffic streams by entering the clear
ip mroute group command.
When the multicast routing table is small, just enter the clear ip mroute * command.
Further Problem Description: The packets that are punted to the RP are rate-limited by a multicast
data traffic SPD process. These packets are counted as "no group".
In an MVPN network, control plane traffic is encapsulated in an MDT. If this MDT traffic is punted
and rate-limited, the control plane traffic is lost, causing PIM neighbors to flap.