Specifications

22
Caveats for Cisco IOS Release 12.0
78-6455-12
Wide-Area Networking
..............*. 019D0C60: 0400C918 011E1001 00000000 0000011E ..I.............
019D0C70: 10054378 0000AA00 0400C918 011E1001 ..Cx..*...I..... 019D0C80: 00000000
0000011E 10054378 0000300E ..........Cx..0. 019D0C90: 300C0608 2B060102 01010200
05000500 0...+........... 019D0CA0: 636B0101 CD417A20 00000000 00000000 ck..MAz
........ 019D0CB0: 00000005 04B90000 00000000 00000000 .....9.......... 019D0CC0:
00000000 00000000 00000000 00000000 ................ 019D0CD0: 00000000 00000000
00000000 00000000 ................ 019D0CE0: 00000000 00000000 00000000 00000000
................ 019D0CF0: 00000000 00000000 00000000 00000000 ................
019D0D00: 00000000 00
There is no workaround.
• CSCdr36073
A Cisco 7500 series router running Cisco IOS Release 12.0(9) may fail with a bus error if Multilink
PPP (MLP) and IP Cisco Express Forwarding (CEF) are simultaneously enabled, and IP Security
(IPSec) is used to provide IP layer encryption over the multilink interfaces. There is no
workaround.
• CSCdr46335
A Cisco 2500 series router that is running Cisco IOS Release 12.0(7) encounters negative input
queue values under the interface. The router displays the following messages:
Serial0 is up, line protocol is up Output queue 0/300, 0 drops; input queue -298/300,
0 drops
There is no workaround.
• CSCdr52732
A Cisco router reloads when tearing down Link Access Procedure, Balanced (LAPB) from an X.25
reader/receiver. There is no workaround.
• CSCdr52853
A Cisco router may reload with a SegV exception if an X.25 interface is misconfigured. There is
no workaround.
• CSCdr71038
A Cisco 2522 router that is running Cisco IOS Release 12.0(9) may experience a buffer leak in the
big buffers.
The datagram size is always 45 and the destination port 1723.
pptp 1723/tcp pptp pptp 1723/udp pptp
The following example illustrates this situation:
Buffer information for Big buffer at 0x234ECC data_area 0x69A43C, refcount 1, next 0x0,
flags 0x88 linktype 7 (IP), enctype 16 (PPP), encsize 1, rxtype 1 if_input 0x1FA7B8
(Serial0.1), if_output 0x1CBEEC (Serial7) inputtime 0x0, outputtime 0x0, oqnumber 70
datagramstart 0x69A48F, datagramsize 45, maximum size 1680 mac_start 0x69A48F,
addr_start 0x0, info_start 0x0 network_start 0x69A490, transport_start 0x0
source: 195.182.70.65, destination: 193.219.12.132, id: 0x45F7, ttl: 123, TOS: 0 prot:
6, source port 1358, destination port 1723
There is no workaround.
• CSCdr71279
Pings fail across a back-to-back serial link unless the router is rebooted on a Cisco 7200 series
router that is running Cisco IOS Release 12.0(5). There is no workaround.
• CSCdr72065
A Cisco 7200 series Network Process Engine (NPE)-200 that is running Cisco IOS Release 12.0(9)
reloads with a bus error and experiences several spurious access errors. There is no workaround.