Specifications

1148
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S1
%MDS-2-LC_FAILED_IPC_ACK: RP failed in getting Ack for IPC message of size 84 to LC
in slot 2 with sequence 1007, error = timeout %RSP-3-RESTART: interface Serial3/0/0:0,
not transmitting
%VIP2-3-MSG: slotX VIP-3-SVIP_CYBUSERROR_INTERRUPT: A Cybus Error occurred.
%VIP2-1-MSG: slotX CYASIC Error Interrupt register 0x4000000 %VIP2-1-MSG: slotX DMA
Transmit Error %VIP2-1-MSG: slotX CYASIC Other Interrupt register 0x100 %VIP2-1-MSG:
slotX QE HIGH Priority Interrupt %VIP2-1-MSG: slotX QE RX HIGH Priority Interrupt
%VIP2-1-MSG: slotX CYBUS Error Cmd/Addr 0xD00FF3A
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS Release 12.3(5a)
but may also occur in other releases. This symptom is not observed in Release 12.1(8c).
Workaround: There is no workaround.
• CSCed86286
Symptoms: A router may reload due to a software-forced crash.
Conditions: This symptom is observed on a Cisco 3745 that runs Cisco IOS Release 12.2(13)T5 and
that has SSH configured. However, the symptom may occur on other platforms that run other
releases and that do not have SSH configured.
Workaround: There is no workaround.
• CSCee35740
Symptoms: After a VIP crashes, a FIB-3-FIBDISABLE error message due to an IPC timeout may
occur for all the slots of the VIP.
Conditions: This symptom is observed on a Cisco 7500 series after the VIP crashes and before the
VIP recovers. The FIB-3-FIBDISABLE error message is generated for all the slots of the VIP,
causing dCEF switching to become disabled.
Workaround: There is no workaround. You can reenable dCEF by entering the clear cef linecard
command.
• CSCee39972
Symptoms: A Cisco router may experience a memory leak in the IPC buffers:
Interface buffer pools:
IPC buffers, 4096 bytes (total 41664, permanent 624):
0 in free list (208 min, 2080 max allowed)
3339198 hits, 75195 fallbacks, 0 trims, 41040 created
4254 failures (65497 no memory)
You can also see that the Pool Manager process is holding onto more and more memory:
PID TTY Allocated Freed Holding Getbufs Retbufs Process
5 0 246913476 44522964 202605044 176561380 2654280 Pool Manager
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(26)S or 12.0(26)S1. The memory leak is triggered by the SNMP polling of specific
OIDs within the ciscoEnhancedMemPoolMIB MIB.
Workaround: Prevent the MIB from being polled by explicitly configuring an SNMP view in the
Cisco IOS configuration. To prevent this MIB from being accessed via any community strings,
create a view and apply the view to all communities configured, such as:
snmp-server view NOMEMPOOL iso included
snmp-server view NOMEMPOOL ciscoEnhancedMemPoolMIB excluded
snmp-server community public1 view NOMEMPOOL ro 6