Rmon Configuration Example; Ntp Overview - 3Com 5500-SI Configuration Manual

492 C 22: F S
HAPTER ILE YSTEM
RMON Configuration
Example

NTP Overview

M
ANAGEMENT
Networking Requirements
Set an entry in RMON Ethernet statistics table for the Ethernet port performance,
which is convenient for network administrators' query.
Networking Diagram
Figure 130 RMON Configuration Networking
Console Port
Configuration Procedure
1 Configure RMON.
[SW5500-Ethernet1/0/1]rmon statistics 1 owner 3com-rmon
2 View the configurations in User View.
<SW5500> display rmon statistics Ethernet 1/0/1
Statistics entry 1 owned by 3com-rmon is VALID.
Gathers statistics of interface Ethernet1/0/1. Received:
octets
broadcast packets
undersized packets
fragments packets
CRC alignment errors:0
Dropped packet events (due to lack of resources):0
Packets received according to length (in octets):
64 :644
256-511:101
As the network topology gets more and more complex, it becomes important to
synchronize the clocks of the equipment on the whole network. Network Time
Protocol (NTP) is the TCP/IP that advertises the accurate time throughout the network.
NTP ensures the consistency of the following applications:
For the increment backup between the backup server and client, NTP ensures the
■
clock synchronization between the two systems.
For multiple systems that coordinate to process a complex event, NTP ensures
■
them to reference the same clock and guarantee the right order of the event.
Guarantee the normal operation of the inter-system (Remote Procedure Call).
■
Internet
Network Port
Switch
: 270149,packets
:1570 ,multicast packets:365
:0 ,oversized packets:0
:0 ,jabbers packets
,collisions
, 65-127 :518
, 512-1023:3
: 1954
:0
:0
, 128-255 :688
, 1024-1518:0