Installation guide

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

78-10643-04 Rev. B0

New and Changed Information

Although there is no requirement in the relevant Request for Comments (RFCs) that the correspondence

between particular ifIndex values and their interfaces be maintained across reboots, applications such

as device inventory, billing, and fault detection increasingly depend on the maintenance of this

correspondence.

Cisco IOS Release 12.1(5)T adds support for an ifIndex value that can persist across reboots, enabling

users to avoid the workarounds previously required for consistent interface identification. The Interface

Index Persistence feature allows for greater accuracy when collecting and processing network

management data by uniquely identifying input and output interfaces for traffic flows and SNMP

statistics. Relating each interface to a known entity (such as an ISP customer) allows network

management data to be more effectively utilized.

For further details, see the following document on CCO:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dt5ifidx.htm

Interface Range Specification

The Interface Range Specification feature allows specification of a range of interfaces to which

subsequent commands are applied and supports definition of macros that contain an interface range. The

Interface Range Specification feature is implemented with the range keyword, which is used with the

interface command. In the interface conﬁguration mode with the range keyword, all entered commands

are applied to all interfaces within the range until you exit interface conﬁguration mode.

MSDP MIB

The Multicast Source Discovery Protocol (MSDP) MIB feature adds support in Cisco IOS software for

the MSDP MIB. This MIB describes objects used for managing MSDP operations using Simple

Network Management Protocol (SNMP). Documentation for this MIB exists in the form of an Internet

Draft titled “Multicast Source Discovery Protocol MIB” (draft-ietf-msdp-mib-03.txt) and is available

through the Internet Engineering Task Force (IETF) at http://www.ietf.org

Refer to the following document for further information:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dt5msdp.htm

NAT—Support for NetMeeting Directory (Internet Locator Service—ILS)

Microsoft NetMeeting is a Windows-based application that enables multi user interaction and

collaboration from a user’s PC over the Internet or an intranet. Support for the NetMeeting Directory

(ILS) allows connections by name from the directory built into the NetMeeting application. Destination

IP addresses do not need to be known in order for a connection to be made.

NTP MIB

The Network Time Protocol (NTP) is used to synchronize timekeeping among a set of distributed time

servers and clients. The Cisco NTP MIB enables users to remotely monitor an NTP server using the

Simple Network Management Protocol (SNMP), provided the MIB itself is implemented on that server.

Use of the NTP MIB to monitor the NTP status of routing devices is accomplished using software on a

network management system (NMS). There are no new or modified Cisco IOS software commands

associated with this feature.

The Cisco implementation of the NTP MIB is based on NTP version 3 (RFC-1305). The MIB objects

are all read-only. SNMP requests are processed by reading the corresponding variables from the NTP

subsystem and returning them in the response. The NTP MIB defines a set of NTP server system