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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(32)S
• CSCsb01490
Symptoms: When general Bidirectional Forwarding Detection (BFD) functionality is enabled and
when Border Gateway Protocol (BGP) is configured without BFD functionality, BFD sessions may
be started with the BGP neighbors. This is not proper behavior: BFD sessions should not be started
when BGP is configured without BFD functionality.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.0(31)S.
Workaround: There is no workaround.
• CSCsb09852
Symptoms: The number of networks in the BGP table and the number of attributes increases, and a
slower convergence may occur for members of a BGP update group.
Conditions: This symptom is observed on a Cisco router when the members of a BGP update group
go out of synchronization with each other in such a way that they have different table versions,
preventing the BGP Scanner from freeing networks that do not have a path.
To check if the members of the BGP update group are in synchronization with each other, enter the
show ip /jointfilesconvert/415844/bgp update-group summary command and look at the table version for each member. If
they have the same table version, they are in synchronization with each other; if they do not, they
are out of synchronization with each other.
Workaround: To enable the members of the BGP update group to synchronize with each other, enter
the clear ip /jointfilesconvert/415844/bgp * soft out command. Doing so does not bounce the sessions but forces BGP to
re-advertise all prefixes to each member.
• CSCsb36589
Symptoms: A router that is configured for OSPFv3 may crash because of memory corruption or a
CPUHOG condition.
Conditions: This symptom is observed rarely in a configuration with a large LSA with at least
44 links that have OSPFv3 enabled and with some links configured for broadcast mode when an
adjacency with a peer router flaps.
Workaround: There is no workaround.
• CSCsb36755
Symptoms: When BGP receives an update that has a worse metric route than the previously received
route for equal-cost multipath, the BGP table is updated correctly but the routing table is not,
preventing the old path from being deleted from the routing table.
Conditions: This symptom is observed on a Cisco router that is configured for BGP multipath.
Workaround: Enter the clear ip route network command.
• CSCsb51101
Symptoms: When you perform an SSO switchover, packets may be lost because of a “no route”
condition. The loss of these packets is an indication of a prolonged SSO convergence time. The
routes for these packets are restored automatically within a few seconds.
Conditions: This symptom is observed on a Cisco router with dual RPs that function in SSO mode.
Workaround: There is no workaround.
• CSCsb54823
Symptoms: One router (R2) may begin sending updates to another router (R1) before R2 has
received the BGP prefix list from R1.
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