Specifications

1199
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
Workaround: Do not use a cut-and-paste operation to remove the network commands
simultaneously with the area that is referenced in the network commands.
• CSCec70366
Symptoms: When the multicast route (mroute) expiration timer is set to a nondefault holdtime value,
a router may reload unexpectedly because of a watchdog timeout.
Conditions: This symptom is observed on a Cisco router when a nondefault holdtime value is
received via a Protocol Independent Multicast (PIM) join message in combination with a bursty
source. This situation may cause the mroute expiration timer to enter an infinite loop.
Because the holdtime value is not user configurable on a Cisco router, this situation is caused by a
PIM connection with a non-Cisco router or by the modification of the Internet Group Management
Protocol (IGMP) query interval on an interface.
Workaround: Ensure that no nondefault holdtime value can be configured for PIM or IGMP.
• CSCec70428
Symptoms: When Protocol Independent Multicast (PIM) dense mode is enabled, an interface in the
outgoing interface list may indicate that it is in forwarding mode but the P flag may still be set to
the source, group (S,G) state, preventing the interface from forwarding any packets.
Conditions: This symptom is observed when an interface enters the forwarding mode because the
prune timer expires and when there is an Internet Group Management Protocol (IGMP) member on
this interface.
Workaround: Enter the clear ip mroute group privileged EXEC command.
• CSCec85322
Symptoms: A Cisco router may reload unexpectedly while running Open Shortest Path First
version 3 (OSPFv3) in a negative testing environment.
Conditions: The symptom is observed under rare circumstances when the router is running low on
memory and when a successful memory allocation (MALLOC) occurs just before the router reloads.
Workaround: There is no workaround.
• CSCec90041
Symptoms: BGP update generation may enter a deadlock.
Conditions: This symptom is observed when the RR configuration is changed.
Workaround: Remove the BGP process and add it back.
• CSCed00449
Symptoms: SAA probes that are executing on the Cisco 12000 series routers incorrectly measure
round trip time delay measurements.
Conditions: This symptom is only observed on a Cisco 12000 series router.
Workaround: Run the probe on a different Cisco platform.
• CSCed19765
Symptoms: On a router with the ip routing external overload signalling hidden command enabled,
if a router-wide CEF FIB-DISABLE event takes place (rather than a FIB-DISABLE event on a line
card), the loopback interface and its associated IP address are removed from the routing table.
On FIB recovery, the IP address associated with the loopback interface will not be present in the
routing table and therefore cannot be advertised to any other routers in the network.