Specifications

Release Notes for Cisco uBR924 Cable Access Router for Cisco IOS Release 12.1(5)T

OL-0385-04 Rev. B0 (2/2001)

Caveats

This caveat is resolved in Cisco IOS Release 12.1(1)T.

• CSCdp41317

This caveat adds support for RFC 2233-compliant link-up and link-down traps. By default, link-up

and link-down traps are implemented as given in the CISCO-IF-CAPABILITY.my MIB. To

generate link-up and link-down traps as defined by RFC 2233, use the snmp-server trap link ietf

global configuration command.

This caveat is resolved in Cisco IOS Release 12.1(2)T.

• CSCdp55546

This caveat updates the IF-MIB MIB with support for RFC 2233, which makes the previous

RFC 1573 obsolete. This change adds the “ifCounterDiscontinuityTime” attribute and changes the

“ifTableLastChange attribute”.

This caveat is resolved in Cisco IOS Release 12.1(2)T.

• CSCdp76415 and CSCdp92139

Packets can be unexpectedly dropped on the upstream channel when the Cisco uBR924 is

configured to use DOCSIS concatenation and the upstream is using 16 QAM symbol rate. The

workaround is to configure the CMTS for a preamble with Unique Word 16 for both the short and

long data burst profile. On the Cisco uBR7200 series universal broadband routers, this can be done

with the cable modulation-profile global configuration command, specifying “uw16” for both the

long and short modulation profiles.

This caveat is resolved in Cisco IOS Release 12.1(2)T.

• CSCdp80746

The Cisco uBR924 Cable Access Router could not upgrade its software image if the fully qualified

filename for the new image was longer than 48 characters. The workaround was to rename the

image with a shorter filename or to move it higher in the Trivial File Transfer Protocol (TFTP)

server’s directory structure so that the fully qualified pathname was shorter than 48 characters.

This caveat is resolved in Cisco IOS Release 12.1(1)T.

• CSCdp95187 and CSCdp97141

The Cisco uBR924 Cable Access Router, when running one of the Small Office feature sets, can

crash with an exception when changing the running configuration. The crash occurs when using a

specific configuration designed for test networks and is unlikely to occur when using configurations

for real-life networks. This caveat is resolved in Cisco IOS Release 12.1(1)T.

• CSCdp97839

This caveat described a problem with GRE IP tunnels that were built between two

Cisco uBR900 series Cable Access Routers, using BPI encryption. The resulting tunnels

experienced intermittent operation, going down after a few minutes of use. Tunnels built using

IPSec encryption were successfully used.

docsIfCmtsServiceCreateTime The syntax has changed from TimeTicks to

TimeStamp.

docsIfCmtsQosProfilePermissions The syntax has changed from OCTET STRING to

BITS.

Attribute Change