Specifications

135
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(3)
or “ALERTING” message while the call is in progress. The fix is for the router to allow but ignore
the “NOTIFY” message, for the Primary Rate DMS-100 switch type only, in call state 3 or call state
4.
• CSCdk42597
An incoming call does not route the called NSAP facility and calling NSAP facility on the outgoing
side. There is no workaround.
• CSCdk42780
A Cisco 3640 router rejects incoming calls even though there are free channels and good modems.
Both ISDN and analog incoming calls are rejected with the following message:
Incoming call rejected, exceeded max calls
This occurs in the Cisco IOS Release 11.2(15.1)P image where the fix for a previous caveat
(CSCdj77099) is already integrated. There is no workaround.
• CSCdk42813
When running with multicast fast switching, small packets coming from a LANE subinterface that
need to be mrouted to another LANE subinterface are not sent correctly. Runts appear on the
Ethernet interfaces connected to C5k. There is no workaround.
• CSCdk55183
In an environment where DLSw is running with Ethernet (local ack) attached end stations, the
connection might be lost because of sequence number problems on frames sent by the router. This
situation causes a Frame Reject (FRMR) message to be sent by the end station. There is no
workaround.
• CSCdk60097
On a Cisco AS5300 access server running Cisco IOS Release 11.3(6.1)T with an IP plus feature
set, the global command modem busyout-threshold xx cannot place B-channels in service or out
of service on an NFAS line without a D-channel (the line is neither a primary nor a backup NFAS
line). There is no workaround.
• CSCdk61807
When you perform an ISDN callback, you might receive the following message:
%SYS-3-HARIKARI: Process ISDN top-level routine exited
There is no workaround.
• CSCdk62967
Cisco 2600 series routers with ISDN configurations, both Basic Rate ISDN (BRI) and Primary Rate
ISDN (PRI) interfaces, can reload with a watchdog timeout when the ISDN interfaces are
“active/operational.” This condition only occurs on Cisco 2600 series routers running
Cisco IOS Release 11.3(6.2)T and later, Cisco IOS Release12.0(1) and
Cisco IOS Release12.0(1)T.
There is no workaround.
• CSCdk63462
The expiration of a response timer (T200) can cause Layer 2 to disconnect and not reconnect until
the router is reloaded. There is no workaround.
• CSCdk64220
Test frames with a virtual Media Access Control (VMAC) address respond with the Burned-in
MAC address (BIA) as the source address. This is a protocol violation. There is no workaround.