Specifications
146
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(2)
• CSCdk45874
A Cisco MC3810 reloads with the error “CPU exception: reason = FORCE_CRASH(959fd4)” if
policy routing is configured.
• CSCdk47222
Beginning in Cisco IOS Release 11.3(5) and 11.3 (5)T, DNS A RR responses will be dropped by
NAT, if the packet is going from NAT outside to NAT inside, and the inside source mapping has an
access-list which permits any, and the embedded IP address is an OUTSIDE GLOBAL address.
• CSCdk47229
If you have demand circuit (including virtual links) and external LSAs on a router, the router fails
within 20-25 minutes.
Workaround: Do not to use demand circuit and virtual links.
• CSCdk57195
When the number of (S,G) entries for IP multicast routing goes above 2730, the line card of GSRs
or the VIP card of an RSP might reload due to memory corruption.
The symptom of this bug is a repetitive pattern of unicast address, multicast address, followed by
four long words (usually holding zeroes or very low count) in corrupted memory blocks.
The following records are other instances of the same caveat:
–
CSCdk47461 vip redzone crash
–
CSCdk48461 Software forced reload at SYS-6-MTRACE: mallocfree
–
CSCdk58110 VIP crash with SYS-3-BADBLOCK: Bad block pointer 603D6058
–
CSCdk60767 Memory corruption in get_buffer
This router reload does not happen in images which have the CSCdj87399 fix.
• CSCdk58728
A BGP session might be reset when the same password is re-applied to the session. Also, password
configuration for a peer-group might reset all the sessions of a box. There is no workaround.
• CSCdk61629
DNS NS records that have glue records translated have the TTL of the glue records set to 0. The
TTL of the NS record is not set to 0. Thus the DNS server has an NS record for a DNS zone but no
glue records. The next time the DNS server needs to contact the remote DNS server it fails because
it has a NS record cached but no IP address to reach it.
• CSCdk62935
Static routes for 0.0.0.0 do not redistribute into other routing protocols.
There is no workaround.
• CSCdk63163
If the ip pim send-rp-announce command is configured when a router runs out of memory, the
router might fail.
Workaround: Unconfigure this command if the router is known to be at risk of running out of
memory.