Specifications

56
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(8)
• CSCdp25693
The dialer idle-timeout might not reset for the inbound interesting packets on all serial interfaces
except the first interface, which is configured with the dialer idle-timeout either interface
configuration command for situations where fast switching is allowed. As a result, all interfaces
except for the first serial interface drop the call.
Workaround: Use process switching instead of fast switching so that all serial interfaces reset the
idle timer as expected.
• CSCdp36081
A Cisco 3640 router that is running Cisco IOS Release 12.0(7), might experience memory
corruption and not be able to access core files. There is no workaround.
• CSCdp38620
The Integrated Local Management Interface (ILMI) on a Cisco router might respond with the
invalid value 0 instead of noSuchName when the interface is queried by the peer switch ILMI on
ILMI MIB objects atmfAtmLayerIlmiVersion and atmfAtmLayerNniSigVersion. There is no
workaround.
• CSCdp40742
A Cisco router that is running Cisco IOS Release 2.0(7)S and supports a large number of ISDN
Primary Rate Interfaces (PRI)s might reload due to low memory. There is no workaround.
• CSCdp50259
If the Layer 2 link is lost while using X.25 over D-channel, a Cisco router will attempt to reestablish
the link by using the terminal endpoint identifier (TEI) value of B-channel. The router will need to
be reloaded to reestablish the X.25 connection. There is no workaround.
• CSCdp58434
Enhanced Local Management Interface (ELMI) does not work correctly on a Cisco 3810 router that
is running Cisco IOS Release 12.0(7)T. The router receives ELMI Status Enquiries, but does not
acknowledge them. This situation does not occur in previous Cisco IOS releases. There is no
workaround.
Resolved Caveats—Cisco IOS Release 12.0(8)
All the caveats listed in this section are resolved in Cisco IOS Release 12.0(8). This section describes
severity 1 and 2 caveats and select severity 3 caveats.
Basic System Services
• CSCdk92780
A Cisco MC3810 series multiservice access concentrator that is connected by a serial interface to
an AS400 Synchronous Data Link Control (SDLC) interface might experience problems keeping
the line up. The line goes active on the AS400 side, and debugs in the router show one or two
exchange identification (XID) frames from the host before the line goes down.
Workaround: Configure idle character-marks in the interface of the router, and upgrade to
Cisco IOS Release 12.0(7.1) or a later release.