Specifications

1200
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
Conditions: This behavior is observed in Cisco IOS Release 12.0(25)S and later releases on a router
with the ip routing external overload signalling hidden command enabled. Earlier Cisco IOS
releases are not affected.
Workaround: Enter the no ip routing external overload signalling hidden command.
• CSCed26217
Symptoms: Even if an OSPF neighbor is in the “FULL” state and an ARP entry exists, a
Cisco platform still sends (and receives) ARP requests at an interval specified in the “poll-interval.”
Conditions: This symptom is observed on a Cisco platform with dual RPs when you configure an
interface as an OSPF nonbroadcast network interface and set the “poll-interval” for a neighbor that
is part of the nonbroadcast segment.
Workaround: There is no workaround.
• CSCed35907
Symptoms: When the following CLI sequence is configured, the router may run into a race condition
and crashes:
router ospf 100
router ospf 1000 vrf
vrf-name
then
no router ospf 100
router ospf 1000
no router ospf 1000
Conditions: This symptom is observed on a Cisco router that is running Cisco IOS Release 12.3(4)T
and later releases. A configuration script with the above CLI sequence is run on the router. The
symptom may also occur in other releases.
Workaround: There is no workaround.
• CSCed41323
Symptoms: A Cisco router with a label switched path (LSP) tunnel on which Fast ReRoute (FRR)
is enabled and active may stop refreshing the Resource Reservation Protocol (RSVP) state when the
refresh updates are received via RSVP summary refresh messages. This situation causes the RSVP
to time out and the LSP tunnel to be torn down.
Conditions: This symptom is observed on a Cisco router that does not transmit RSVP messages for
LSP tunnels on which FRR is enabled and active via message IDs. The symptom does not occur
when FRR is enabled but not active.
A peer router that runs software other than Cisco IOS software may continue to send RSVP
messages with messages IDs that request an acknowledgment. The Cisco router does acknowledge
these message IDs, causing the peer router to start sending RSVP summary refresh messages to
refresh the RSVP state. The Cisco router ignores the message IDs that are contained in these RSVP
summary refresh messages and does not refresh the RSVP state.
Workaround: There is no workaround.
• CSCed53358
Symptoms: Pings fail on an Ethernet-to-VLAN interworking over L2TPv3 due to an IRDP failure.
Conditions: This symptom is observed when you ping between two CE routers. Both of the CE
routers do not learn each other’s MAC address automatically.
Workaround: Ping from the first CE router to the second CE router, then ping from the second CE
router to the first CE router.