Cisco Systems 3750E Manual De Usuario
33-6
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
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.
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
to assign an ifIndex value to an interface:
Note
The switch might not use sequential values within a range.
Configuring SNMP
These sections contain this configuration information:
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Table 33-3
ifIndex Values
Interface Type
ifIndex Range
SVI
1
1.
SVI = switch virtual interface
1–4999
EtherChannel
5000–5012
Loopback
5013–5077
Tunnel
5078–5142
Physical (such as Gigabit Ethernet or SFP
2
-module interfaces)
2.
SFP = small form-factor pluggable
10000–14500
Null
14501