Cisco Cisco IOS Software Release 12.4(4)T
1373
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(2)T5
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CSCei65865
Symptoms: When an RSVP application (for example, the MPLS TE feature) sends an updated Path
message to reflect a modification in its QoS request, the updated Path message may not be forwarded
by a downstream RSVP-aware router.
message to reflect a modification in its QoS request, the updated Path message may not be forwarded
by a downstream RSVP-aware router.
Conditions: This symptom is observed when the downstream RSVP-aware router has two RSVP
features configured: local policy and refresh reduction. The commands to configure these features
are the ip rsvp policy local command and the ip rsvp signalling refresh reduction command,
respectively.
features configured: local policy and refresh reduction. The commands to configure these features
are the ip rsvp policy local command and the ip rsvp signalling refresh reduction command,
respectively.
When an RSVP reservation is established with a Path/Resv message handshake and the sender
application subsequently transmits an updated Path message that the downstream router applies to
an RSVP local policy, the router does not forward the modified Path message. This situation
prevents the application from receiving the corresponding Resv message, and may cause the
application to fail.
application subsequently transmits an updated Path message that the downstream router applies to
an RSVP local policy, the router does not forward the modified Path message. This situation
prevents the application from receiving the corresponding Resv message, and may cause the
application to fail.
Workaround: If this is an option, unconfigure the local RSVP policy or refresh the reduction and
then restart the RSVP application. If this is not an option, there is no workaround.
then restart the RSVP application. If this is not an option, there is no workaround.
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CSCei83265
Symptoms: MVPN traffic is limited to about 9 Mpps and the CPU usage on the egress line card is
100 percent.
100 percent.
Conditions: This symptom is observed on a Cisco router that functions as a PE router when MVPN
performs decapsulation in the slow path instead of the fast path.
performs decapsulation in the slow path instead of the fast path.
Workaround: There is no workaround.
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CSCsb22290
Symptoms: On a Cisco router that is configured for Port Address Translation, when you enter the ip
nat service fullrange udp port port-number command, the port-allocation logic does not function.
When a PAT port is already taken, the next-port logic fails, causing some packets to be discarded.
nat service fullrange udp port port-number command, the port-allocation logic does not function.
When a PAT port is already taken, the next-port logic fails, causing some packets to be discarded.
Conditions: This symptom is observed on a Cisco IOS Mobile Wireless Gateway (MWG) that is
configured for high availability (HA). However, the symptom may occur on any platform that has
the ip nat service fullrange udp port port-number command enabled.
configured for high availability (HA). However, the symptom may occur on any platform that has
the ip nat service fullrange udp port port-number command enabled.
Workaround: Disable the ip nat service fullrange command.
Further Problem Description: Regular PAT and NAT are not affected. Only the port-allocation logic
in relation to the ip nat service fullrange command is affected.
in relation to the ip nat service fullrange command is affected.
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CSCsb27969
Symptoms: The IPv6 PIM register encapsulation tunnel does not come up after a switchover. The
PIM Register mechanism does not work for sources directly connected to the router.
PIM Register mechanism does not work for sources directly connected to the router.
Conditions: This symptom has only been observed when the ipv6 pim register-source global
configuration command is configured.
configuration command is configured.
Workaround: After switchover, unconfigure and re-configure the ipv6 pim register-source
command.
command.
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CSCsb54823
Symptoms: One router (R2) may begin sending updates to another router (R1) before R2 has
received the BGP prefix list from R1.
received the BGP prefix list from R1.
R1 does apply its inbound BGP prefix list so routes are denied if they need to be. However, R2 sends
routes to R1 which are denied by R1.
routes to R1 which are denied by R1.