Specifications

1411
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
• CSCin51588
Symptoms: When you reload the microcode onto an enhanced 8-port multichannel T1/E1 port
adapter (PA-MC-8TE1+) while traffic is flowing through the port adapter, the following error
message may appear:
%RSP-3-RESTART: interface Serial0/0/4:0, not transmitting
In most cases, the interfaces of the port adapter recover on their own. In very rare cases, the
execution of a Cbus Complex occurs.
Conditions: This symptom is observed on a Cisco 7500 series.
Workaround: If the interfaces of the port adapter do not recover on their own, execute a Cbus
Complex.
• CSCin52105
Symptoms: A Multilink Frame Relay (MLFR) bundle interface may flap along with its member
links.
Conditions: This symptom is observed when distributed MLFR is configured on a nonchannelized
port adaptor such as a 4-port serial enhanced port adapter (PA-4T+) or an 8-port serial port adapter
(PA-8T).
Workaround: There is no workaround.
• CSCin52927
Symptoms: A Cisco 7200 series may reload after you change the maximum transmission unit (MTU)
of an Inverse Multiplexing over ATM (IMA) interface while traffic is flowing.
Conditions: This symptom is observed when the Any Transport over MPLS (AToM): ATM Cell
Relay over MPLS: VC Mode feature is configured on the IMA interface.
Workaround: There is no workaround.
• CSCin53040
Symptoms: A secondary Route Switch Processor (RSP) that is configured with 512 MB RAM may
not recognize the 512 MB RAM.
Conditions: This symptom is observed on a Cisco 7500 series that has a primary and a secondary
RSP and that runs a Cisco IOS image that has a size larger than 20 MB.
Workaround: Configure the secondary RSP with 256 MB RAM.
• CSCin53682
Symptoms: A provider edge (PE) router may reload when packets are forwarded while a remote
Virtual Private Network (VPN) prefix is being reresolved.
Conditions: This symptom is observed when the MPLS VPN-Inter-AS-IPv4 BGP Label Distribution
feature is configured for option 4, that is, for a non-VPN transit provider and a multi-hop external
Border Gateway Protocol (eBGP) connection between route reflectors (RRs).
Workaround: For the exchange of PE loopback addresses between autonomous systems, do not use
eBGP with IPv4 label distribution. Rather, configure redistribution into Interior Gateway Protocol
(IGP) or static routes.
• CSCin57432
Symptoms: A Versatile Interface Processor (VIP) may run low on memory when a high rate of traffic
is sent across the Multilink Frame Relay (MFR) interface.
Conditions: This symptom is observed when an MFR interface is distributed onto a line card.
Workaround: There is no workaround.