Cisco OL-4015-08 Bedienungsanleitung PDF herunterladen (Seite 570)

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Cross-Platform Release Notes for Cisco IOS Release 12.0S

OL-1617-14 Rev. Q0

Caveats

Resolved Caveats—Cisco IOS Release 12.0(30)S3

• CSCeg89202

Symptoms: When you attach a policy with a priority class to a subinterface of a channelized

OC-48/STM-16 (DS3/E3, OC-3c/STM-1c, OC-12c/STM-4c) POS/SDH ISE line card that is

configured with Frame Relay subinterfaces, the default queue limit for the priority queue of the port

changes to a value that is calculated by the policy map that was attached. This situation causes QoS

to be impacted.

Conditions: This symptom is observed on a Cisco 12000 series.

Workaround: Ensure that the policy map that you attach last calculates the desired queue limit,

which is then applied to all subinterfaces of the port.

• 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.

• CSCeh05751

Symptoms: Hardware multicast may be disabled on an Engine 3 line card and the line card may

reset.

Conditions: This symptom is observed when you scale BGP routes and load-balancing on a PE

router that is configured for MVPN.

Workaround: There is no workaround.

• 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.

• CSCeh12675

Symptoms: Traffic may not fully converge after you have reloaded a line card with a scaled

configuration or after an HA switchover.

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