Managing Interface Sublayers; Compressing Interfaces - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual

Managing Interface Sublayers

Copyright © 2010, Juniper Networks, Inc.
Use the no version to return to the default, the legacy encoding scheme.
See snmp-server interfaces description-format.
You can set up the SNMP agent to compress the number of interface instances in the
standard interface and stack tables. You can also control the interface numbering method
used in the interface tables.

Compressing Interfaces

You can compress interfaces by interface type, table type, and the administrative status
of the interface.
Compressing interfaces without specifying a table type removes them from the interface
tables (ifTable, ifXTable, and juniIfTable), the interface stack tables (ifStackTable,
ifInvStackTable, and juniIfInvStackTable), the ipAddrTable, and the ipNetToMedia table,
which increases table retrieval performance. For example, if you want statistics kept only
on IP interfaces, then you can compress all interfaces except IP; subsequently, only IP
interfaces will appear in the interface tables, interface stack tables, ipAddrTable, and
ipNetToMedia table.
Compressing a table type in an interface removes the interface from the specified table
type. For example, if you want to compress an interface only in interface tables, you can
specify the table-type keyword and interface-tables as the TableType value.
To compress interfaces that have an administrative status of down, use the snmp-server
interfaces compress-restriction command.
To compress interfaces according to type, use the snmp-server interfaces compress
command. To see the list of interfaces that you can remove, use the CLI help:
host1(config)#snmp-server interfaces compress ?
Atm Atm interface layer
Atm1483 Atm1483 interface layer
AtmAal5 AtmAal5 interface layer
. . .
SonetVT SonetVT interface layer
VlanMajor VlanMajor interface layer
VlanSub VlanSub interface layer <cr>
If you enter the snmp-server interfaces compress command without keywords, the
following interface types are removed from the interface tables:
ip
ppp
ethernetSubinterface
hdlc
ipLoopback
ipVirtual
Chapter 4: Configuring SNMP
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