Configuring Interface Numbering Mode - Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Configuration Manual

JUNOSe 11.1.x System Basics Configuration Guide

Configuring Interface Numbering Mode

E Series routers support the RFC 1213 interface numbering mode on bulkstats. This
mode is contrasted with the default interface numbering mode.
The RFC 1213 numbering mode is based on a 32-bit contiguous integer value starting
from 1 and ranging to ifNumber. This mode differs from the default interface
numbering mode, which encodes a type field in the upper 8 bits of a 32-bit integer.
The use of the upper 8 bits creates large gaps in the ifIndex numbering scheme.
There is no re-use of ifIndex values in RFC 1213 mode, whereas in the default
interface numbering mode, ifIndex values can be re-used. In the default interface
numbering mode, re-use of ifIndex values across reboots is permitted and is basically
known as ifIndex re-numbering.
In RFC 1213 mode, however, the interface numbers are not re-used during a single
initialization of the device and renumbering of ifIndexes occurs after a system reboot.
In the default interface numbering mode, ifIndexes are persistent across system
reboots and can be reused without resetting the value of sysUpTime.
In RFC 1213 mode, two parameters control the size of the ifIndex range and the
total number of interfaces in the standard interface tables maxIfIndex and
maxIfNumber. There is no such control in the default interface numbering mode.
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Collecting Bulk Statistics
host1#show bulkstats schema
Schema Information:
Index Subtree
----- -----------------
1 ifStats
2 system
Index Subtree List
----- --------------------------------------------------
1 ifOutErrors; ifLowerInterface; ifTimeOffset
2 N/A
Example 3 Displays bulk statistics configuration information for a schema that
is configured to collect QoS statistics for egress queue level attributes, filtering
out queue-length and queue profile name attributes
host1#show bulkstats schema
Schema Information:
Index Subtree
----- -----------------
1 qos
2 system
Index Subtree List
----- --------------------------------------------------
1 QLength; QQueueProfile
2 N/A
See show bulkstats schema.
CollectorIndex State
-------------- --------
1 active
2 active
CollectorIndex State
-------------- --------
1 active
2 active