Installation guide

Release Notes for Cisco uBR7200 Series for Cisco IOS Release 12.1 T

78-10643-04 Rev. B0

Caveats

• CSCds02764

When a Cisco uBR7200 series router sends a LEASEQUERY packet to a Cisco Network Registrar

(CNR), the Cisco uBR7200 router might misinterpret the LEASEQUERY reply from the CNR.

There is no workaround.

This is resolved in Cisco IOS Release 12.1(5)T.

• CSCdr80563

The Cisco uBR7246 VXR Universal Broadband Router equipped with an NPE-300,

Cisco uBR-MC16C or Cisco uBR-MC16E cable modem card, and a Cisco PA-FE-TX Fast

Ethernet port adapter, may not boot correctly from Flash memory after a power cycle. This is a

timing issue. The port adapter hardware lacks sufficient time to stabilize after a reset, while the

driver code starts.

Workaround: Reboot the router if this problem is encountered.

This is resolved in Cisco IOS Release 12.1(5)T.

• CSCdr91706 and Cisco IOS HTTP Vulnerability

A defect in multiple releases of Cisco IOS software will cause a Cisco router or switch to halt and

reload if the Cisco IOS HTTP service is enabled, browsing to http://router-ip/anytext?/ is

attempted, and the enable password is supplied when requested. This defect can be exploited to

produce a denial of service (DoS) attack.

The vulnerability, identified as Cisco bug ID CSCdr91706, affects virtually all mainstream Cisco

routers and switches running Cisco IOS software releases 12.0 through 12.1, inclusive. This is not

the same defect as CSCdr36952.

The vulnerability has been corrected and Cisco is making fixed releases available for free to replace

all affected Cisco IOS releases. Customers are urged to upgrade to releases that are not vulnerable

to this defect as shown in detail below.

This vulnerability can only be exploited if the enable password is known or not set.

You are strongly encouraged to read the complete advisory, which is available at

http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.

This is resolved in Cisco IOS Release 12.1(5)T.

Open Caveats for Release 12.1(3)T

There are no open caveats specific to the Cisco uBR7200 series router that require documentation in the

Cisco IOS Release 12.1(3)T release notes. For a list of open caveats for Release 12.1 T, refer to Caveats

for Cisco IOS Release 12.1 T.

Closed and Resolved Caveats for Release 12.1(3)T

All the caveats listed in this section are closed or resolved in Cisco IOS Release 12.1(3)T.

• CSCdp17526

If a POS port adapter has fair-queuing enabled, it cannot be replaced via online insertion and

removal (OIR). If such a POS port adapter is replaced by online removal and insertion, it can no

longer transmit packets. The router must be reloaded to recover from this error; the only

workaround is to disable fair-queuing before replacing a POS port adapter.

This is resolved in Cisco IOS Release 12.1(3)T.