Specifications

1402
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Conditions: This symptom is observed when node structures are created and recycled in the TE LSP
topology database without proper reinitialization of the router ID.
Workaround: There is no workaround.
• CSCec59882
Symptoms: A Reverse Path Forwarding (RPF) check should be disabled for bootp packets with the
source IP address 0.0.0.0 and the destination IP address 255.255.255.255. However, PXF currently
disables RPF checks for all packets with the source IP address 0.0.0.0.
Conditions: These symptoms have been observed on Cisco IOS Release 12.0(22)S and later.
Workaround: There is no workaround.
• CSCec61001
Symptoms: Parallel Express Forwarding (PXF) may stop.
Conditions: This symptom is observed on a Cisco 10720 router that is running Cisco IOS
Release 12.0(26)S and that has traffic engineering (TE) Fast Reroute (FRR) link protection when
traffic flows through Ethernet over Multiprotocol Label Switching (EoMPLS) virtual circuits (VCs).
Workaround: There is no workaround.
• CSCec61738
Symptoms: A Cisco 7500 that is functions as a provider edge (PE) router may fail to receive an
Internet Control Message Protocol (ICMP) echo message on a Multilink PPP (MLP) ingress
interface.
Conditions: This symptom is observed on a Cisco 7500 series when Virtual Private Network (VPN)
routing/forwarding (VRF) is configured on the MLP interface.
Workaround: There is no workaround.
• CSCec62568
Symptoms: Packets with sizes that are greater than the maximum transmission unit (MTU) may be
randomly dropped at the provider edge (PE) router.
Conditions: This symptom is observed on a Cisco PE router that is configured for Layer 2 Tunneling
Protocol version 3 (L2TPv3) xconnects when the ip dfbit set pseudowire class configuration
command and the ip pmtu pseudowire class configuration command are set in a pseudowire class
that is used for the xconnect.
Workaround: Configure an MTU that is less than the network MTU on the CE router.
• CSCec63011
Symptoms: A router may reload because of an NVRAM corruption.
Conditions: This symptom is observed when NVRAM is accessed simultaneously by two processes,
when one the processes has a file open, and when the second process attempts to open a nonexistent
file. The error handling for the second process clears the global NVRAM pointer that is used by the
first process. This situation is more likely to occur in a configuration with redundant Route
Processors (RPs) but may also occur in a configuration with a single RP when two terminal windows
are open.
Workaround: There is no workaround.