Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(5)

• CSCdm26717

APPN/DLUR experiences corruption when the total number of PUs and LUs approaches 8000. This

problem is typically preceded by spurious memory accesses. The resulting failures are variable,

such as a corrupt CVx’60’ on DLUR-DLUS flows, SESSEND failures from DLUR with sense code

0x1014023D, and PUs and LUs becoming stuck in “Stopping” state. There is no workaround.

• CSCdm27224

When static NetBIOS name cache entries are defined using the netbios name-cache configuration

command, issuing a subsequent show netbios name-cache EXEC command will produce

traceback messages and might cause a Cisco router to unexpectedly restart. There is no

workaround.

• CSCdm33134

In a DLSw environment where there are many unpaced SNA frames (for example, using DSPU with

many LUs defined), high CLS congestion can result in a “ZWO” being sent followed by a “RWO”

without waiting for an FCA response. This will cause the circuit to hang at Cw:0.

Workaround: Clear the circuit.

• CSCdm37870

An APPN router running HPR might reload with the following stack trace:

Enter hex value: 0x7D910C 0x7D910C:__start(0x60008000)+0xa07d110c Enter hex value:

0x608EFA20 0x608EFA20:Qfind_front(0x608efa10)+0x10 Enter hex value: 0x608342F8

0x608342F8:lrp10(0x608340f8)+0x200 Enter hex value: 0x60832E04

0x60832E04:lrp02d(0x60832d64)+0xa0 Enter hex value: 0x60832750

0x60832750:lrp00(0x60832548)+0x208 Enter hex value: 0x60250D6C

0x60250D6C:r4k_process_dispatch(0x60250d58)+0x14 Enter hex value: 0x60250D58

0x60250D58:r4k_process_dispatch(0x60250d58)+0x0 Enter hex value:

There is no workaround.

Interfaces and Bridging

• CSCdj90833

When an eight-ISDN B-channel Multilink PPP bundle is configured by way of a dialer rotary group

and a dialer interface on a Cisco 7206 router with ATM port adapters, the router reloads

periodically every one to three hours. Turning off Multilink PPP bypasses the problem at the cost

of performance. This problem also exists when doing fast switching from other tunneling protocols

to the ATM Lite. There is no workaround.

• CSCdk67709

Multilink PPP interleaving causes a delay in outbound traffic on RSP platforms. There is no

workaround.

• CSCdk88242

Frame Relay traffic shaping does not work on Frame Relay subinterfaces of a PA-2CE1

channel-group port adapter installed on a VIP2.

Workaround: Configure Generic Traffic Shaping (GTS) on Frame Relay subinterfaces.