
810
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
This bug is specific to MPLS-VPN scenarios (CSCsj22187 fixes this issue for other
address-families).
Workaround: Terminate any paused BGP show commands before beginning operations to remove
BGP-related configuration. Pressing "q" to abort suspended show commands, rather SPACE to
continue them, may avoid problems in some scenarios.
• CSCsq14031
Symptoms: Unable to ping IP address of session target. Packets of certain sizes (between 57 and ~63
bytes, depending on the type of packet) are corrupted when using a tunnel over a PPP multilink
interface. EIGRP packets were within this range and so were dropped and caused the route to the IP
address being pinged not to be added.
Conditions: Issue may be related to encryption or Network Address Translation (NAT).
Workaround: Disable or increase the value of ppp multilink fragmentation.
• CSCsq14261
Symptoms: Downstream traffic will drop when we send IPv6 traffic over PPPoE sessions.
Conditions: Bring up a PPPoE session over L2TP tunnel for address negotiated by IPv6, then send
downstream IPv6 traffic.
Workaround: There is no workaround.
• CSCsq14340
Symptoms: While reloading a Cisco router with dual RP with default start-up configuration of active
RP, there is a stale snmp mib community-map ILMI engineid command seen in standby running
configuration which is not seen in active RP configuration.
Conditions: This symptom is observed in latest nightly build for Cisco IOS Release 12.2(33)SB
image.
Workaround: There is no workaround.
• CSCsq15198
Symptoms: When all uplink ports on SUP are admin down and a no shut is entered on any of the
two uplink ports, BFD sessions running on a different LC on the chassis begin flapping.
Conditions: This occurs whenever the first of two uplink ports is brought up.
Workaround: There is no workaround.
• CSCsq15994
Symptoms: Low CPS may be observed.
Conditions: The symptoms are seen with PPPoA and PPPoE sessions.
Workaround: There is no workaround.
• CSCsq16008
Symptoms: In DDP DFC, MET entries get programmed on both replication instances.
Conditions: The symptom is observed when issuing the shutdown command followed by the no
shutdown command on the interface that receives the PIM join instruction.
Workaround: Use the clear ipv6 pim topology group address command.
• CSCsq16611
Symptoms: IPv6 packets are process switched instead of using Cisco Express Forwarding (CEF)
Conditions: The above symptom is observed on a Cisco 7301 and Cisco 7200 routers.
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