Port Monitoring
Page 19-61
Port Monitoring
An essential tool of the network engineer is a network packet capture device. A packet
capture device is usually a PC-based computer, such as the Sniffer
®
, that provides a means for
understanding and measuring data traffic of a network. Understanding data flow in a
VLAN
-
based switch presents unique challenges primarily because traffic takes place
inside
the
switch, especially on dedicated devices.
The port monitoring feature built into OmniS/R software allows the network engineer to
examine packets to and from a specific Ethernet 10BaseT port. Port monitoring has the
following features:
• Software commands to enable and display captured port data.
• Captures data in Network General
®
file format.
• Limited protocol parsing (basic IP protocols and IPX) in console dump display.
• Data packets time stamped.
• One port monitored at a time.
• RAM-based file system.
• Memory buffer space from
1 MB
to
8 MB
.
• Statistics gathering and display
• Monitors only Ethernet 10BaseT ports
• Filtering limited to basic packet type—broadcast, multicast or unicast.
You can select to dump real-time packets to the terminal screen, or send captured data to a
file. Once a file is captured, you can FTP it to a Sniffer for viewing.
Port Mirroring
An alternate method of monitoring ports is Port Mirroring, which allows a network engineer
to attach a Sniffer to one Ethernet port and mirror traffic to and from any other Ethernet port.
Port mirroring is described in
Port Mirroring
on page 19-57.
Port Monitoring Menu
The port monitoring commands are contained on the port monitoring menu, which is a sub-
menu of the Networking menu. The port monitoring menu displays as follows:
Command
Port Monitoring Menu
pmon
Port monitor utility
pmcfg
Configure port monitor parameters
pmstat
View port monitor statistics
pmd
Port monitor disable
pmp
Port monitor pause
Main
File
Summary
VLAN
Networking
Interface
Security
System
Services
Help
/Networking/Monitor %
The commands in this menu are described in the following sections.
Summary of Contents for Omni Switch/Router
Page 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Page 4: ...page iv ...
Page 110: ...WAN Modules Page 3 40 ...
Page 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Page 164: ...Using ZMODEM Page 5 8 ...
Page 186: ...Displaying and Setting the Swap State Page 6 22 ...
Page 202: ...Creating a New File System Page 7 16 ...
Page 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Page 430: ...OmniChannel Page 15 16 ...
Page 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Page 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Page 646: ...Application Example DHCP Policies Page 20 30 ...
Page 660: ...GMAP Page 21 14 ...
Page 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Page 722: ...Application Example 5 Page 24 12 ...
Page 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Page 872: ...The WAN Port Software Menu Page 28 46 ...
Page 960: ...Deleting a PPP Entity Page 30 22 ...
Page 978: ...Displaying Link Status Page 31 18 ...
Page 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Page 1024: ...Backup Services Commands Page 34 14 ...
Page 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Page 1072: ...Configuring a Switch with an MPX Page A 10 ...
Page 1086: ...Page B 14 ...
Page 1100: ...Page I 14 Index ...