
477
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
• CSCtg13413
Symptoms: ESP tunnel establishment with VPNLB is unsuccessful.
Conditions: The symptom is observed with ESP VServer and UDP VServer with ISAKMP
configured in a basic hub-spoke VPN setup.
Workaround: There is no workaround.
• CSCtg14446
Symptoms: Packets are dropped in excess of the configured rate for hierarchical policies, with
shaper in the parent policy.
Conditions: The symptom is observed only with HQoS policies (flat policies are not affected).
Workaround: There is no workaround.
• CSCtg14755
Symptoms: In a 6PE environment, on a Cisco 7600 PE injecting a directly connected v6 prefix, the
hardware programming for the BGP local label for that prefix might be incorrect when an IPv6
address is deleted and re-added.
Conditions: The symptom is observed when multiple BGP paths exist for this prefix (remote PEs
advertise the same prefix).
Workaround: Perform a shut/no shut on the local interface.
• CSCtg16191
Symptoms: A SIP-400 line card may crash due to a memory leak in the code for bringing down
PPPoE sessions. A few hours before the crash, the line card starts to generate the following logs:
%SYS-2-MALLOCFAIL: Memory allocation of
100352 bytes failed from 0x407F181C, alignment 0
Pool: Processor Free: 2242304 Cause: Memory fragmentation Alternate Pool:
None Free: 0 Cause: No Alternate pool
You can also verify this memory leak using the show memory allocating-process totals command
on the SIP-400 line card and searching for VA_LOCK. More memory is allocated to VA_LOCK
when you bring up PPPoE sessions, but the usage will not go down even after the PPPoE sessions
are torn down.
Conditions: The symptom is observed only with PPPoE sessions.
Workaround: There is no workaround.
• CSCtg22774
Symptoms: The input queue on which the packets are being received for RLB is getting wedged and
all the packets are being dropped.
Conditions: The symptom is observed on an RSP720 platform only and when the packet size is more
than 512 bytes.
Workaround: You can use SUP720, if the hardware is available.
Further Problem Description: RSP platform supports particle-based packet buffers. When the packet
is punted to the SLB process, the particles are collated and converted to contiguous buffers. If there
is an error in the RLB packet processing, then the packet is being freed assuming that it is a particle.
This freeing is not succeeding and the packet is getting queued to the input interface queue
permanently.
• CSCtg35298
Symptoms: Traffic drops are seen between two PEs after re-optimization.
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