Cisco Cisco IOS Software Release 12.0 S Release Notes
1202
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
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CSCed75295
Symptoms: FRR LSPs may fail to provide protection with a Next-next-hop (NNHOP) backup
tunnel.
tunnel.
Conditions: This symptom is observed only when a primary LSP reaches beyond a merge point.
Workaround: There is no workaround.
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CSCed82273
Symptoms: IPv6 BGP may not reach the established state.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of
Cisco IOS Release 12.0(26)S2 or Release 12.0(28)S. However, the symptom is not
platform-specific.
Cisco IOS Release 12.0(26)S2 or Release 12.0(28)S. However, the symptom is not
platform-specific.
Workaround: There is no workaround.
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CSCee10426
Symptoms: A BGP prefix may receive or advertise incorrect label information.
Conditions: This symptom is observed on an MPeBGP session between ASBRs when there is more
than one MPeBGP session configured.
than one MPeBGP session configured.
Workaround: There is no workaround.
ISO CLNS
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CSCec39973
Symptoms: A router that runs Intermediate System-to-Intermediate System (IS- IS) may reload
unexpectedly when there are a lot of adjacencies that continue to flap.
unexpectedly when there are a lot of adjacencies that continue to flap.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.2 S.
In Release 12.0 S, the symptom may occur when you enter the router isis global configuration
command followed by the fast- flood router configuration command.
command followed by the fast- flood router configuration command.
In Release 12.3, the symptom may occur when you enter the router isis global configuration
command followed by the ip fast- convergence router configuration command.
command followed by the ip fast- convergence router configuration command.
Workarounds: Prevent IS-IS adjacencies from flapping. There is no other workaround for
Release 12.2 S.
Release 12.2 S.
For Release 12.0 S, do not enter the router isis global configuration command followed by the
fast-flood router configuration command.
fast-flood router configuration command.
For Release 12.3, do not enter the router isis global configuration command followed by the ip
fast-convergence router configuration command.
fast-convergence router configuration command.
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CSCed40888
Symptoms: A Border Gateway Protocol (BGP) session may be terminated unexpectedly.
Conditions: This symptom is observed on a Cisco router that functions as a peer in a BGP
configuration when you disable and reenter the neighbor ip-address send-label address family
configuration or router configuration command or when you move the router that has the neighbor
ip-address send-label address family configuration or router configuration command enabled to a
peer group.
configuration when you disable and reenter the neighbor ip-address send-label address family
configuration or router configuration command or when you move the router that has the neighbor
ip-address send-label address family configuration or router configuration command enabled to a
peer group.
Workaround: There is no workaround.