Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Resolved Caveats—Cisco IOS Release 12.0(13)

• CSCds34812

A Cisco router running a LAN emulation client sends a no-src LE_NARP message when it switches

over to the standby mode. A no-src LE_NARP message is a LAN emulation version 2 message that

is sent to advertise to the other LAN emulation clients that the binding between target-mac address

and target-atm address is no longer valid. This message can confuse the Hosts running LAN

emulation version 1 client depending on the sequence in which they receive no-src LE_NARP from

the standby router and LE_NARP from the active router. This situation results in a temporary loss

of connectivity, which will be restored once the client retries the address resolution process. There

is no workaround.

Resolved Caveats—Cisco IOS Release 12.0(13)

All the caveats listed in this section are resolved in Cisco IOS Release 12.0(13). This section describes

severity 1 and 2 caveats and select severity 3 caveats.

Basic System Services

• CSCdr57350

A Cisco router that is running Cisco IOS Release 12.0 might unexpectedly reload while it is

performing Simple Network Management Protocol (SNMP) functions related to routing table

information (specifically ipRouteNextHop). The reload occurs only in cases where an IP route

configuration of the form "ip route <network address> <netmask> 0.0.0.0" exists. There is no

workaround.

IBM Connectivity

• CSCdm46549

Receiving Intermediate Transmission Block (ITB) characters in bisync on some Cisco routers will

cause memory corruption and cause a software-forced reload. There is no workaround.

• CSCdr46359

Frame Relay Access Support (FRAS) boundary access node (BAN) works over the primary

connection and switches to the backup connection. However, when it switches to the primary

connection from the backup connection, it does not work. There is no workaround.

• CSCdr75061

A Cisco router might experience a software-forced reload with an error at PC 0x6026107. The

decode of the stack is as follows:

System was restarted by error - a Software forced crash, PC

0x60261070[abort(0x60261068)+0x8] Image text-base: 0x60008918[_start(0x60008918)+0x0],

data-base: 0x60DA0000[etext(0x60d9e4f0)+0x1b10] FP:

0x6191DF18[etext(0x60d9e4f0)+0xb7fa28], RA: 0x60261070[abort(0x60261068)+0x8] FP:

0x6191DF18[etext(0x60d9e4f0)+0xb7fa28], RA: 0x6025F890[crashdump(0x6025f7ac)+0xe4] FP:

0x6191DF30[etext(0x60d9e4f0)+0xb7fa40], RA:

0x60A42B78[appn_crashdump(0x60a42b60)+0x18] FP:

0x6191DF48[etext(0x60d9e4f0)+0xb7fa58], RA: 0x60A42004[Pexit(0x60a41f7c)+0x88] FP:

0x6191E0A0[etext(0x60d9e4f0)+0xb7fbb0], RA: 0x60A3B800[xM_Mget_x(0x60a3b4d0)+0x330]

FP: 0x6191E1E0[etext(0x60d9e4f0)+0xb7fcf0], RA: 0x60A3AE98[Mget_x(0x60a3ae20)+0x78]