Cisco Cisco IOS Software Release 12.4(23) Notas de publicación
637
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(7)
IP Routing Protocols
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CSCec25562
Symptoms: A Cisco router may crash while signaling 40K TE LSPs.
Conditions: When RSVP refresh reduction is enabled and the router has exhausted its memory, then
it is possible a crash may occur inside rsvp_rmsg_process_acks() if a queue element could not be
allocated. The code does not check if the queue element was successfully allocated before removing
a pointer to it.
it is possible a crash may occur inside rsvp_rmsg_process_acks() if a queue element could not be
allocated. The code does not check if the queue element was successfully allocated before removing
a pointer to it.
Workaround: There is no workaround.
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CSCec26626
Symptoms: A Cisco router may crash if a message id is deleted without first being removed from
the message id database.
the message id database.
Conditions: This symptom has been observed when RSVP refresh reduction is enabled and the
router has exhausted its memory.
router has exhausted its memory.
Workaround: There is no workaround.
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CSCef97738
Symptoms: BGP may pass an incorrect loopback address to a multicast distribution tree (MDT)
component for use as the source of an MDT tunnel.
component for use as the source of an MDT tunnel.
Conditions: This symptom is observed when you reload a Cisco router that runs Cisco IOS
Release 12.0(28)S1 and when there is more than one source address that is used in BGP, such as Lo0
for IPv4 and Lo10 for VPN. If the IPv4 peer is the last entry in the configuration, the MDT tunnel
interface uses lo0 as the source address instead of lo10. The symptom may also occur in other
releases.
Release 12.0(28)S1 and when there is more than one source address that is used in BGP, such as Lo0
for IPv4 and Lo10 for VPN. If the IPv4 peer is the last entry in the configuration, the MDT tunnel
interface uses lo0 as the source address instead of lo10. The symptom may also occur in other
releases.
Workaround: Remove and add the MDT statement in the VRF.
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CSCei45669
Symptoms: An OSPF router may update and originate a new version of an LSA when it should flush
the LSA.
the LSA.
Conditions: This symptom is observed on the originating router when it receives a self-originated
MaxAge LSA before it can flush this LSA from its database. This symptom may occur under a rare
condition when a neighboring router calculates that is has a newer copy of the LSA from the
originating router and bounces the MaxAge LSA to the originating router.
MaxAge LSA before it can flush this LSA from its database. This symptom may occur under a rare
condition when a neighboring router calculates that is has a newer copy of the LSA from the
originating router and bounces the MaxAge LSA to the originating router.
Workaround: Enter the clear ip ospf process command.
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CSCei77227
Symptoms: A Cisco router that functions in a multicast VPN environment may crash.
Conditions: This symptom is observed when you check the unicast connectivity and then
unconfigure a VRF instance.
unconfigure a VRF instance.
Workaround: There is no workaround.
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CSCei93982
Symptoms: A router that is running Cisco IOS may crash unexpectedly.
Conditions: NAT must be enabled for this symptom to occur. The problem is seen when an
application uses two well known ports: one for source and the other for destination. The outgoing
translation is created, but on the return trip, using the previous source port as the destination, NAT
may use the incorrect algorithm.
application uses two well known ports: one for source and the other for destination. The outgoing
translation is created, but on the return trip, using the previous source port as the destination, NAT
may use the incorrect algorithm.