Specifications

Caveats for Cisco IOS Release 12.0

78-6455-12

Novell IPX, XNS, and Apollo Domain

172.16.153.0 0.0.0.255 log access-list 101 permit ip 192.168.158.4 0.0.0.3 host

192.168.158.13 log access-list 101 permit ip 10.30.0.0 0.0.255.255 172.16.153.0

0.0.0.255 log access-list 101 permit ip 10.30.0.0 0.0.255.255 host 192.168.158.13 log

! line con 0 password 7 060A5C354541195D0C1953 login transport input none line aux 0

password 7 0308081F0F003108470758 login line vty 0 4 access-class 1 in password 7

011F55105204164B28420F login ! ntp clock-period 17179758

clock-period 17179758 ntp source Ethernet0/0 ntp master 6 ntp server 132.236.56.250

prefer ntp server 158.121.104.4 end

There is no workaround.

• CSCds54938

A Cisco router connected to a server running CiscoSecure 2.431 reloads on a regular 24-to 48-hour

basis because of a bus error at a low address. There is no workaround.

• CSCds59277

The Configuration Extraction Tool (CET) between two Cisco 7206 routers running Cisco IOS

Releases 11.2(19) and 12.0(11) may fail after a few minutes. There is no workaround.

Novell IPX, XNS, and Apollo Domain

• CSCdk75507

Some packets may not arrive at a destination when using Xerox Network Systems (XNS) fast

switching over multiple equal-cost ATM paths. This situation can result in retransmission and

connection timeouts.

Workaround: Decrease the xns maximum-paths command in global configuration mode number

to 1, or disable the xns route-cache command in global configuration mode on all interfaces in all

of the paths.

• CSCdp28700

If you change IPX encapsulation from Service Advertising Protocol (SAP) to Subnetwork Access

Protocol (SNAP) on a dot1q subinterface over Fast Ethernet, you might receive “alignment

correction” messages. There is no workaround.

• CSCdr00809

A Cisco router may reload sporadically when it forwards a Type20 NetBIOS broadcast packet.

There is no workaround.

• CSCdr89399

After upgrading from Cisco IOS Release 11.2(16)P to Cisco IOS Release 12.0(10) Internetwork

Packet Exchange (IPX) routing is unstable and causes connectivity problems and the following

errors may occur:

%DUAL-3-INTERNAL: IPX-EIGRP 1: Internal Error and %SYS-2-MALLOCFAIL: Memory allocation

errors occuring.

There is no workaround.

• CSCds51821

When a Cisco 2500 series router is connected to basic-ni (isdn switch-type basic-ni) in Cisco IOS

Release 12.0 (10) layer 2 flapping occurs. There is no workaround.