Managing Virtual Routers; Monitoring Snmp; Establishing A Baseline - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual

JunosE 11.3.x System Basics Configuration Guide

Managing Virtual Routers

Monitoring SNMP

Establishing a Baseline

baseline snmp
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Your router supports SNMP management of virtual routers. This support is based on an
SNMP community string proxy to select particular instances of virtual routers. The entity
MIB is used to model the physical container to the logical relationship of the virtual router
implementation. See "Configuring Virtual Routers" on page 525.
To monitor the status of SNMP operations on your network, enter Privileged Exec mode.
You can then establish a baseline and use the show commands to view statistics.
SNMP statistics are stored in system counters. The only way to reset the system counters
is to reboot the router. You can, however, establish a baseline for SNMP statistics by
setting a group of reference counters to zero.
Use to establish a baseline for SNMP statistics.
The system implements the baseline by reading and storing the statistics at the time
the baseline is set and then subtracting this baseline whenever baseline-relative
statistics are retrieved.
To display statistics relative to the current baseline, use the delta keyword with SNMP
show commands.
SNMP operations (such as Get and Set) continue to use and report statistics from the
system counters.
See "Viewing SNMP Status" on page 229 for a sample display when you enter the
show snmp command. If you establish a baseline and then enter show snmp, the
statistics now have zero or low values.
Example
host1#baseline snmp
host1#show snmp
Contact: Joe Administrator
Location: Network Lab, Bldg 3 Floor 1
2 SNMP packets input
0 Bad SNMP version errors
0 Unknown community name
0 Illegal operation for community name supplied
0 Encoding errors
0 Number of requested variables
0 Number of altered variables
1 Get-request PDUs
1 Get-next PDUs
0 Set-request PDUs
0 Unknown security models
0 Unavailable contexts
2 SNMP packets out
0 Too big errors (Maximum packet size 1500)
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