Добавил:
Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Cisco Switching Black Book - Sean Odom, Hanson Nottingham.pdf
Скачиваний:
87
Добавлен:
24.05.2014
Размер:
2.89 Mб
Скачать

IE is not supported on Solaris, and Netscape 4.6 is not supported at all. However, you can try to access the switch through your browser to determine whether your browser version is supported. If your browser is not supported, the switch will display an error message, and the session will not complete.

Tip IE 5.0 will automatically refresh with the latest real−time port configuration changes. For example, if you are logged on and you add an additional device to one of the switch’s Ethernet ports, the CVSM will update your currently logged−on session with the port changes (this update takes 15 or 16 seconds). However, if you make a change from half duplex to full duplex in the Ports table, you must click on the browser’s Refresh button to see the latest configuration changes. Finally, wait at least one minute before you turn off your switch, so the configuration changes will be saved to the switch’s startup−config file (1900 and 2820 only).

CVSM Access Levels

Once you are on your switch, you can configure privilege levels for users; you can grant up to 15 different user access levels. You can use these accounts and access levels for users to log on to the CVSM. The privilege access levels boil down to three types: User EXEC mode (level 1), Privileged EXEC mode (level 3), and Full Access (set by specifying 15). When configuring the accounts you can define passwords as well, as shown here:

enable password [level]{password} enable secret [level]{password}

Level 1 specifies normal User EXEC mode privileges. When no level is specified, the privilege level defaults to Level 15.

Note

It’s important to remember that to access the CVSM for management from a Web browser, the

 

switch will need to have a Full Access (level 15) password, an IP address, and the default

 

gateway configured if the switch resides on another network segment.

Once the accounts have been configured and you have logged on to the switch successfully, the default home page will be displayed.

CVSM Default Home Page

The CVSM uses standard Hypertext Transfer Protocol (HTTP) to access the switch’s built−in Web server. After a connection is made through one of the switch’s Ethernet ports, the embedded Web server (which resides in Flash memory) begins to initialize a session between it and the client. The CVSM home page will then be displayed, and a dialog box appears, requesting an account and password before you can log on. After you have successfully logged on, an image of your switch will appear; colored LEDs reflect your switch’s current status by port. You can click on each port and configure it from there.

CVSM is a Web−based device−management tool for monitoring your switch, as well as managing its configuration. Because the switch is already configured, the CVSM allows you to view the current settings (the running−config file) the switch is using. You can change the configuration at will through its various settings, either by entering information in fields, adding and removing list items, or selecting checkboxes.

Tip The Cisco Catalyst 1900 Web Switch Manager uses JavaScript and frames. Be sure you have JavaScript enabled and that your browser fully supports the use of frames.

When you are configuring your switch via the CVSM and entering information in the various fields, the changes become part of the running (current) configuration when you click on Apply. If you make a mistake

273

and want to retype an entry, click on Cancel to undo your first entry.

Note Again, keep in mind that if you are using IE5, you must use the Refresh button in your browser after each configuration change to see the updates. Otherwise, you risk making a mistake down the line.

The CVSM default home page also has a real−time display of your switch. As we mentioned earlier, each port has a colored LED display associated with it. Let’s look at what these LEDs represent, because they correlate with the port’s configuration.

The Switch Image

Each port on the switch image has an LED above it. The following LEDs, as a group or individually, display information about the switch and its individual ports:

Port Status (STAT)—The default view of the switch image. It focuses on the actual status of the individual ports.

Bandwidth Utilization (UTL)—The percentage of the switch’s total bandwidth that is being used at any given time.

Full−Duplex Operation (FDUP)—Which ports are operating in half− or full−duplex mode.

When you click on the Mode button on the switch image’s home page, you will change the currently selected mode and the port LEDs. The LEDs change because they are related and work in conjunction with the mode that is selected. By default, when STAT is selected, it shows the current port status; using UTL displays the overall switch utilization; and FDUP displays which ports are configured and/or connected at full duplex. The LED is green for whatever mode has been selected and once the selected mode has been active for about 30 seconds, the switch will return to its default mode, illuminating the STAT LED. You can change the default mode by using the Console Settings menu on the management console.

On the top left side of the switch you will find another LED—System. The System LED’s colors indicates the following:

Solid amber—The switch is receiving power but is not functioning properly. One or more power on self tests (POSTs) have failed. The management console logon screen displays the failure.

Solid green—The switch is operating as designed.

The Redundant Power Supply (RPS) LED’s color means the following:

Solid green—RPS is operational.

Blinking green—AC power is on and RPS is up.

Black (off)—RPS is off.

Solid amber—RPS is connected but not working properly. A power supply in the RPS may have powered down, or the fan on the RPS is out.

The STAT LED’s color indicates the following:

Solid amber—The specified port is not forwarding packets. The port could be administratively disabled, disabled because of an address violation, or suspended by the Spanning−Tree Protocol (STP) because of network−related loops.

Alternating green and amber—A problem exists, which may be due to any of the following: a link fault, error frames (which can cause connectivity issues), collisions, or cyclic redundancy checks (CRCs).

Black—No link exists.

Solid green—The link is operational.

In the Immediate Solutions section we’ll walk through configuring the IP address and the Web CVSM configuration settings on the Standard Edition IOS. If you are using the command line interface, refer to

274

Соседние файлы в предмете Программирование