Cisco Systems 3750E Configuring Snmp, Snmp ifIndex MIB Object Values, IfIndex Range, Svi, 33-6

Chapter 33 Configuring SNMP

Configuring SNMP

SNMP ifIndex MIB Object Values

In an NMS, the IF-MIB generates and assigns an interface index (ifIndex) object value that is a unique number greater than zero to identify a physical or a logical interface. When the switch reboots or the switch software is upgraded, the switch uses this same value for the interface. For example, if the switch assigns a port 2 an ifIndex value of 10003, this value is the same after the switch reboots.

The switch uses one of the values in Table 33-3to assign an ifIndex value to an interface:

Table 33-3	ifIndex Values
Interface Type		ifIndex Range
SVI1		1–4999
EtherChannel		5000–5012
Loopback		5013–5077
Tunnel		5078–5142
Physical (such as Gigabit Ethernet or SFP2-module interfaces)		10000–14500
Null		14501

1.SVI = switch virtual interface

2.SFP = small form-factor pluggable

Note The switch might not use sequential values within a range.

Configuring SNMP

These sections contain this configuration information:

•Default SNMP Configuration, page 33-7

•SNMP Configuration Guidelines, page 33-7

•Disabling the SNMP Agent, page 33-8

•Configuring Community Strings, page 33-8

•Configuring SNMP Groups and Users, page 33-10

•Configuring SNMP Notifications, page 33-12

•Setting the Agent Contact and Location Information, page 33-15

•Limiting TFTP Servers Used Through SNMP, page 33-16

•SNMP Examples, page 33-16

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

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