User guide

New and Changed Information
30
Release Notes for Cisco 2500 Series for Cisco IOS Release 12.0 T
78-5563-07 Rev.H0
Process MIB
The addition of the CISCO-PROCESS-MIB and changes to the CISCO-MEMORY-POOL-MIB allow
the retrieval of additional CPU and memory statistics and their reporting by SNMP. The
CISCO-PROCESS-MIB provides CPU 5-second, 1-minute, and 5-minute statistics. In addition, this
MIB provides CPU utilization and memory allocation/deallocation statistics for each process on each
CPU listed in the CISCO-PROCESS-MIB.
The CISCO-PROCESS-MIB is enabled when the first SNMP command is configured. The background
statistics collection for VIP cards and the master CPU occurs even if the SNMP subsystem is not
initialized.
Response Time Reporter Enhancements
The Response Time Reporter (RTR) feature allows you to monitor network performance, network
resources, and applications by measuring response times and availability. RTR statistics can be used to
perform troubleshooting, problem notifications and pre-problem analysis. The RTR enhancements
extend IP support, such as Type of Service, and allow you to measure various types of IP traffic, such
as UDP, TCP, and HTTP.
SLIP-PPP Banner and Banner Tokens
The SLIP-PPP Banner section of this feature enables you to configure the banner that is displayed when
making a SLIP connection. This improves compatibility with non-Cisco SLIP dial-up software.
The Banner Tokens section of this feature introduces the use of tokens to all existing banner commands.
Tokens allow you to display current information from the configuration, such as the router’s hostname,
IP address, encapsulation type, and MTU size.
SNMP v3
Simple Network Management Protocol version 3 (SNMPv3) addresses issues related to the large scale
deployment of SNMP for configuration, accounting and fault management. Currently SNMP is
predominantly used for monitoring and performance management. The primary goal of SNMPv3 is to
define a secure version of the SNMP protocol. SNMPv3 also facilitates remote configuration of the
SNMP entities which make remote administration of SNMP entities a much simpler task. SNMPv3
builds on top of SNMPv1 and SNMPv2 to provide a secure environment for the management of systems
and networks.
SNMPv3 provides an identification strategy for SNMP devices to facilitate communication only
between known SNMP strategy. Each SNMP device has an identifier called the SNMP EngineID which
is a copy of SNMP. Each SNMP message contains an SNMP EngineID. SNMP communication is
possible only if an SNMP entity knows the identity of its peer SNMP device.
SNMPv3 also contains a security model or security strategy that exists between an SNMP user and the
SNMP group to which the user belongs. A security model may define the security policy within an
administrative domain or a intranet. The SNMPv3 protocol consists of the specification for the User
based Security Model (USM).
Definition of security goals where the goals of message authentication service includes the following
protection strategies:
• Modification of Information or protection against some unauthorized SNMP entity altering
in-transit SNMP messages generated on behalf of an authorized principal)