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You can use Traffic Monitor to perform a number of network monitoring functions.
The following sections contain detailed information about using Traffic Monitor:
By default, you can display up to 32 individual agents, ports, or DLCIs simultaneously in descending order of activity. The default display is a three-dimensional bar graph of vital signs, sorted by utilization that includes the speed of an agent (in parentheses).
The default information displayed, how it is sorted, and how often the display is refreshed depends on the agent you choose.You can change these default values to suit your needs by making selections from the View, Format, Sort, and Refresh options on the menu bar. You can run other real-time monitoring applications from the Application menu.
If more than 32 agents are available, the scrolling arrows on the bottom right of the window are enabled, letting you scroll through the display. To focus on information displayed in a single window, you can use the Scope application for any individual agent(s) within a group, or any individual switch port(s) or DLCI(s) to focus on the information displayed in a single window.
You can use Traffic Monitor for a single agent to determine a baseline of normal or expected performance. You then might use Traffic Monitor on a second agent and note any deviations between the two segments that might indicate problems.
You can also use Traffic Monitor to select an agent group to simultaneously display multiple segments, letting you compare the traffic level between different segments to determine if there are problems. You might then use the Scope application to review a specific segment more closely.
For more information about the Scope application, see "Using the Scope Application."
Using Traffic Monitor for Agents and Agent Groups
To start Traffic Monitor, follow these steps:
Step 1 Click the Traffic radio button in the TrafficDirector main window.
Step 2 Click the Agent or Agent Group radio button.
Step 3 Do one of the following:
The domain name you select does not matter; by default, Traffic Monitor always starts with the RMON domain.
Step 4 Click the Traffic Monitor icon.
The Traffic Monitor window for the selection you made opens (Figure 11-1).
The Traffic Monitor windows that open are a function of the View, Sort, and Format options. By changing the default display options, you can customize a Traffic Monitor display to meet your individual needs.
| Choose This View Option... | To Display This Information |
|---|---|
Broadcast | The percentage of available bandwidth that is broadcast packets. |
Errors | The percentage of available bandwidth that is broadcast errors. |
Multicasts | The percentage of available bandwidth that is multicast packets. |
Collisions | The percentage of available bandwidth that is collisions. |
Utilization | Both maximum and current segment utilizations as a percentage of total available bandwidth (for example, 10 Mbits/sec). For WAN agents, two utilization % headings are displayed: |
Size Distribution | The number of packets seen by the agent for each of the size ranges available. |
Vital Signs | Simultaneously, as a percentage of total available bandwidth, the individual statistics for Broadcast %, Multicast %, Utilization %, |
Packet Destination | Simultaneously, in Packets per second, the individual statistics for Broadcasts, Multicasts, and Unicasts. |
Ethernet Errors | Simultaneously, the individual packet errors per second for CRC/aligns, Undersize, Oversize, Fragments, and Jabbers. |
Speed | The speed of the selected agent in bits per second. |
| Choose This Sort Option... | To Display This Information |
|---|---|
Utilization | The order of most utilization. |
Multicast | The order of the most multicast activity. |
Broadcast | The order of the most broadcast activity. |
Error | The order of the most error activity. |
Collision | The order of the most collision activity. |
Agent Name | The agent name order. |
To use Traffic Monitor for a switch, selected ports on a switch, a roving agent assigned to a switch, or all attached server and trunk port SwitchProbe devices on the switch, follow these steps:
Step 1 Click the Traffic radio button in the TrafficDirector main window.
Step 2 Click the Switch radio button.
Step 3 Select a switch name from the switch list box.
Step 4 Select a switch port name from the interface list box (lower left of screen).
Step 5 Click the Traffic Monitor icon.
The Traffic Monitor window for the Switch or Switch port selected opens (Figure 11-2). The window shows the slot number, port number, and speed for each switch port in the format 1/03 (10M), where 1 is the slot number, 03 is the port number, and 10M is the speed.
To use Traffic Monitor to display vital statistics for a Frame Relay agent or selected DLCI, follow these steps:
Step 1 Click the Traffic radio button in the TrafficDirector main window.
Step 2 Click the Frame Relay radio button.
Step 3 Select a Frame Relay agent name from the Frame Relay list box.
Step 4 If necessary, select a DLCI interface from the interface list box (lower left of screen).
Step 5 Click the Traffic Monitor icon.
The Traffic Monitor window for the selected Frame Relay Agent or DLCI opens (Figure 11-3).
The display window includes the DLCI configuration information for the trunk and each DLCI learned, including the total Committed Information Rate (CIR) for the trunk and DLCIs, and the individual CIR for the data terminal equipment (DTE) and data communications equipment (DCE) circuits of the trunk for a specific DLCI.
To use the Scope application to examine network activity for an individual agent, switch port, Frame-Relay Agent, or DLCI, follow these steps:
Step 1 Select Scope>Select Agent from the menu bar.
A scope window similar to the one shown in Figure 11-4 opens.
Step 2 Select the agent, port number, or DLCI you want to examine.
Step 3 Click OK.
The Traffic Monitor window displays information based on the selections you made in Step 2.
The TrafficDirector application supports multiport roving for all Cisco Catalyst 5000-series switches. Multiport roving lets you perform full RMON analysis on one or more selected switch ports. You can rove up to eight switch ports simultaneously.
When you run Traffic Monitor against a switch that supports multiport roving, then start TopN IP Talkers, All IP Talkers, or All IP Conversations for a specific port, the existing roving information (previously established through Configuration Manager) displays.
Depending on what port information you want to see, you can modify the existing roving port information by replacing the existing selections or adding new selections.
To modify the existing roving information, follow these steps:
Step 1 Start Traffic Monitor for a Catalyst 5000-series switch.
Step 2 Select Applications from the menu bar.
The Launch Application window opens.
Step 3 From the left side of the Launch Application window, click TopN Talkers, All IP Talkers, or All IP Conversations.
Step 4 From the right side of the window, select a specific port number for which you want to start the application.
Step 5 Click Launch.
A confirmation window opens and displays the current roving information.
Step 6 Do one of the following:
Step 7 If you selected replace, another confirmation window opens, in which you are asked if you want to reinitialize the counters for the new roving setting.
Do one of the following.
The application you selected starts for the port number(s) you selected.
Posted: Mon Apr 5 13:12:04 PDT 1999
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