
800
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
• CSCso67195
Symptoms: Router may crash due to memory corruption:
*Apr 7 12:32:14: %SEC-6-IPACCESSLOGRP: list 111 denied pim 0.0.0.0 -> <removed>, 1
packet
*Apr 7 12:32:29: %SYS-2-CHUNKBADMAGIC: Bad magic number in chunk header, chunk
680A5374 data 680A79A4 chunkmagic FFFFFFFF chunk_freemagic 0 - Process= "Mwheel
Process", ipl= 0, pid= 274, -Traceback= 0x6169C450 0x60102E78 0x601031E4 0x61D418E4
0x61D4230C 0x61CF1A48 0x61D1280C 0x61D05FE4 0x61D0E9FC
chunk_diagnose, code = 1
chunk name is PIM JP GroupQ
Conditions: This symptom occurs when PIM is enabled on an interface and access- list logging is
enabled.
ip pim sparse-dense-mode
access-list 98 deny any log
Workaround: Remove access-list logging.
• CSCso67500
Symptoms: Multicast traffic from the VRF network may be dropped after encapsulation.
Conditions: The symptom is observed when a Bidirectional PIM (Bidir PIM) is used in the VRF
network and when Gigabit port(s) on the active supervisor are in use. An SSO switchover can trigger
a packet drop issue.
Workaround: Reconfigure MDT using the no mdt default command followed by the mdt default
group- address command.
• CSCso67850
Symptoms: When pasting (as in cut-and-pase) a set of IPv6 configuration commands for a router
network interface to the router console, the router may crash.
Conditions: Issue may occur during router configuration.
Workaround: There is no workaround.
• CSCso68344
Symptoms: The command no service dhcp to stop DHCP server/relay from the router may cause a
crash.
Conditions: The symptom is observed when router is receiving requests from DHCP clients at high
rate and duplicate-address detection ping is active.
Workaround: There is no workaround.
• CSCso70986
Symptoms: When traffic engineering (TE) preferred path is removed, then all the XCs using that
pw-class are unprovisioned.
Conditions: Occurs when xconnect anything over MPLS (AToM) configured with TE tunnel
preferred path.
Workaround: There is no workaround.
• CSCso71350
Symptoms: The standby may reload when upgrading the software from Cisco IOS
Release 12.2(31)SB to Release 12.2(33)SB. After issuing the issu loadversion command, when the
standby tries to boot up with Cisco IOS Release 12.2(33)SB, it fails and may crash at config sync
and may continually reboot.
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