|
|
This chapter provides information on configuring your CDN devices, including the CDM and CE, as well as creating user accounts and setting parameters for media replication and playback.
 |
Note You should have already unpacked your CDM and CE hardware, as well as activated your CDM. Refer to the Cisco CDN Software Enterprise Solution Configuration Guide for more information on completing these preliminary steps before continuing with this chapter. |
This chapter contains the following sections:
Before attempting to log on to your CDM, you must have first activated the CDM by following the procedure outlined in Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide.
Directions for logging on to your CDM, verifying configuration settings and, if necessary, modifying configuration settings follow.
http://name_of_Content_Distribution_Manager
or
http://IP_address_of_Content_Distribution_Manager
If a dialog box appears requesting your username and password, the CDM was successfully activated and is up and running on your network.
Step 2 Enter the default administrator username and password as follows, and then click OK:
User name: admin
Password: password
The Cisco CDM window appears.
Step 3 Click Device Console and verify that the CDM is listed as an online device.
A green circle appears in the Online column. Any other active CDN devices should also be listed here. (See Figure 2-1.)
Step 4 You can now proceed with the configuration of your other CDN devices such as CEs. See the "Configuring Content Distribution Network Devices" section.
Once you have verified that your CDM is up and running, you can configure your CEs. This step is necessary in order for you to begin distributing media files to users on the CDN.
Before attempting to configure your CDN devices, make sure that you have first reviewed the steps for activating devices in Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide, and completed any actions listed prior to activating your CDN devices.
The most common scenario for CDN implementation is one in which Dynamic Host Configuration Protocol (DHCP) is used to configure CDN devices without a proxy server. When using DHCP, CDN devices automatically receive network configuration information and do not typically require manual configuration by a CDN administrator.
If you are using a DHCP server, you do not need to manually enter information or make changes to the configuration of your devices. CDMs and CEs should behave in a "plug-and-play" manner, identifying themselves to one another and receiving the proper configuration information once they have been connected to your network and booted.
However, it is important that CDN administrators follow the sequence of steps for activating their CDN devices outlined in Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide. In particular, it is important that the CDM be activated prior to the CEs, and that the CEs be configured on the CDM before they are turned on and connected to the network.
|
Note We recommend that you do not change the default settings when using DHCP. |
In the event that you are using a proxy server along with DHCP, you will need to follow a two-step process to configure your CDN devices:
1. Use the CDM to edit the proxy server settings for the designated CDN device.
2. Use the Installation Wizard utility to force the CDN device to use the proxy information configured on the CDM.
|
Note Do not turn the power on for your CE until you have set its proxy settings using the CDM and saved changes. |
The following steps walk you through the process of configuring your CDN devices for use with DHCP and a proxy server:
http://name_of_Content_Distribution_Manager
or
http://IP_address_of_Content_Distribution_Manager
If a dialog appears requesting your username and password, the CDM was successfully activated and is up and running on your network.
Step 2 Enter the default administrator username and password as follows, then click OK. The Cisco CDM window appears.
User name: admin
Password: password
Step 3 From the Devices menu, choose Proxy.
Step 4 From the Device Selector list, choose the name of the device you need to configure.
Step 5 Click Specify Proxy Server Settings and enter information in the text fields. See the "Editing Proxy Server Settings" section and Table 2-3 for instructions on entering proxy server information.
Step 6 Click Save Changes in the Proxy Dialog box.
Step 7 Repeat Step 1 through Step 6 for each device you need to configure.
Step 8 Power on the device.
|
Note It can take up to 10 minutes for the CDN device to complete the power-on tests. |
Step 9 Once the device has powered on, use the CDN installation wizard to complete the configuration process, storing the proxy settings on the device and activating it for use.
Refer to Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide, which includes instructions on using the installation wizard to activate both the CDM and CEs.
In the event that you are setting up your CDN using static IP addresses for your CDN devices without a proxy server or DHCP, you will need to follow a two-step process to configure those devices to connect to your CDM:
1. Use the CDM to edit the TCP/IP settings for the designated CDN devices.
2. Use the installation wizard utility to configure the CDN devices to use the proxy information configured on the CDM.
|
Note Do not turn the power for your CE on until you have set the CE's TCP/IP settings using the CDM, and saved changes. |
Follow these steps if you are not using DHCP or a proxy server to assign the IP addresses:
Step 2 From the Device Selector list, choose your CDM.
Step 3 Click Specify an IP address, port, subnet mask, and gateway and enter information in the text fields. See the "Editing TCP/IP Settings" section for more information on these settings.
Step 4 Click Save Changes in the TCP/IP dialog box.
Step 5 Repeat Step 1 through Step 4 for each device you need to configure.
Step 6 Power on the device.
|
Note It can take up to 10 minutes for the CDN device to complete the power-on tests. |
Step 7 Once the device has powered on, use the CDN installation wizard to complete the configuration process, storing the TCP/IP settings on the device and activating it for use.
Step 8 Refer to Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide, which includes instructions on using the installation wizard to activate both the CDM and CEs.
If you are setting up your CDN using static IP addresses for your CDN devices with a proxy server, you need to follow a two-step process to configure those devices to connect to your CDM:
1. Use the CDM to edit the TCP/IP settings for the designated CDN devices.
2. Use the installation wizard utility to configure the CDN devices to use the proxy information configured on the CDM.
|
Note Do not turn the power for your CE on until you have set the CE's TCP/IP and proxy settings using the CDM and saved changes. |
Follow these steps if you are not using DHCP to assign IP addresses, but are using a proxy server:
Step 2 From the Device Selector list, choose your device.
Step 3 Click Specify an IP address, port, subnet mask, and gateway and enter information in the text fields. See the "Editing TCP/IP Settings" section for more information on these settings.
Step 4 Click Save Changes in the TCP/IP dialog box.
Step 5 From the Devices menu, choose Proxy.
Step 6 The name of the device you need to configure should still appear in the Device Selector field, if it does not, select it from the Device Selector list.
Step 7 Click Specify Proxy Server Settings and enter information in the text fields. See the "Editing Proxy Server Settings" section and Table 2-3 for instructions on entering proxy server information.
Step 8 Click Save Changes in the Proxy Dialog box.
Step 9 Repeat Step 1 through Step 8 for each device you need to configure.
Step 10 Power on the device.
|
Note It can take up to 10 minutes for the CDN device to complete the power-on tests. |
Step 11 Once the device has powered on, use the CDN Installation Wizard to complete the configuration process, storing the TCP/IP and proxy server settings on the device and activating it for use.
Refer to Chapter 2 of the Cisco CDN Software Enterprise Solution Configuration Guide, which includes instructions on using the installation wizard to activate both the CDM and CEs.
You use the Devices menu to manage your CDN devices in your network. From the Devices menu you can configure the CDM and CEs and edit device properties.
|
Note Only users with administrator privileges have access to the Devices menu. |
The CDN device properties that can be edited include the device configuration properties described in Table 2-1.
| Device Property | Description |
Name and description. | |
Specify whether to use DHCP or static IP address information. | |
Specify whether to use a Domain Name Server (DNS). Specify the DNS information. | |
Specify whether to use a proxy server. Specify server information. | |
Change the system administration password, add or modify users. | |
Update software or reboot a device. | |
Set region and time zone for each device. | |
Configure your device for Windows. |
Although changing the name of a device and adding a description for it are optional, we recommend that you change the default name of each device to something more meaningful to you and that you add some descriptive information, such as location, for each device. See Figure 2-2 and Table 2-2 for more information on the Identification dialog and its options.
The default name of a device is the device's system ID, which is:
MAC_address.box.provider.sn
To enter an identifying name and description for a device:
Step 2 From the Device Selector list, choose the device you wish to edit. Some general information about the selected device is displayed.
Step 3 Enter a new name and description, as needed. The default name is listed in the Name field.
Step 4 Click Save Changes.
Clicking Cancel Changes returns all values to their previous settings when you last clicked Save Changes.
| Device Identification | Description |
Indicates whether a device is online or not. A solid green circle shows that the device is online. A red circle shows that the device is not online. A solid orange circle indicates that the device has not yet been configured on the CDM. See the "Configuring Content Distribution Network Devices" section. | |
Displays the name of the selected device. | |
Identifies the device as either a CDM or a CE. | |
Specifies how long the device has been running since it was last rebooted. | |
Identifies channels, or content groups, to which the device is subscribed. See the "Creating Channels" section and the "Subscribing a Content Engine to a Channel" section for more information. | |
Displays the Internet Protocol (IP) address assigned to the device. |
If you are using DHCP, TCP/IP properties are set automatically by the DHCP server. If you are not using DHCP, TCP/IP properties must be specified.
To specify a DHCP server or to enter IP address information:
The TCP/IP dialog box appears. (See Figure 2-3.)
Step 2 Make sure that the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
General information about the selected device is displayed.
Step 3 Click Obtain Network Settings Automatically Using DHCP and go to Step 5.
Step 4 Click Specify an IP address, port, subnet mask, and gateway to set an IP address, port, subnet mask, and gateway.
Enter the information as required for the network.
Step 5 Click Save Changes.
Clicking Cancel Changes returns all values to their previous settings when you last clicked Save Changes.
If you activate your CDM and then need to change its network IP address, use the following procedure.
|
Note Make sure that you configure the CDM before it is moved, rather than attempting to change the CDM IP settings after the move has taken place. |
When the TCP/IP dialog box appears, confirm that the CDM is displayed in the Device Selector field.
Step 2 If it is not already selected, click the Specify an IP address, port, subnet mask, and gateway button.
Step 3 Edit the IP settings in the IP Address field as needed and click Save Changes.
Step 4 If necessary, make changes to the DNS and Proxy settings and click Save Changes.
Step 5 Power up the CDM at its new address and log back on to the CDM interface.
Step 6 Click System and confirm the CDM is displayed in the Device Selector field.
Step 7 Under the heading, System Reconfiguration, click Reset. This posts the CDM's new IP address in the boot packages of all the CEs configured on your CDN.
Step 8 You must now reboot each of your CEs. Use the Device Selector field to choose the name of the first CE.
Step 9 Click System Reboot to reboot the CE.
Step 10 Repeat Step 9 for each CE on your CDN.
Step 11 Once they have rebooted, verify that each of your CEs successfully comes back online by clicking Device Console and looking for a green circle in the Online column adjacent to each CE.
A DNS server is used to provide user-friendly names for computers in a network. If a DNS server is not used, the numerical value of the IP address is used.
To enter DNS server settings:
The DNS dialog box appears. (See Figure 2-4.)
Step 2 Make sure that the correct device is displayed in the Device Selector field. If it is not displayed, choose the correct device in the list.
General information about the selected device is displayed.
Step 3 Enter the following information to identify your DNS server:
Step 4 In the field labeled DNS Server, enter the network address of your Domain Name Server.
Step 5 If your network is using more than one DNS server, click Add DNS Server to add another DNS server to the list, then repeat Step 4.
Step 6 Click Save Changes.
A Web or HTTP proxy server might be required by your site administrator to access the Internet. The following definitions should help you configure your proxy server for use with the CDN. See Table 2-3 for information and default proxy server settings.
After saving changes to your proxy server settings, you must reboot all affected CDN devices, including your CDM and any affected CEs, before resuming use of the Cisco CDN product. Rebooting affected devices ensures that changes to your proxy server settings are communicated to all devices in your CDN system.
| Device Setting | Description | ||
HTTP Address and Port | IP address and port number of the proxy server used to access the Internet using HTTP protocol (required). The default HTTP port is 80. | ||
Secure Address and Port | IP address and port number of the proxy server used to access the Internet using secure HTTP protocol. The default secure address port number is 443. | ||
Addresses for which the proxy server is not used so that data transmission occurs directly over the LAN or Internet (optional).
|
To enter the proxy server settings:
The Proxy Server dialog box appears. (See Figure 2-5.)
Step 2 Make sure that the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
General information about the selected device is displayed.
Step 3 Enter the proxy server configuration settings.
See Table 2-3 for a description of each setting.
Step 4 If there are certain IP addresses you wish to exempt from using the proxy server, add them at this time. Enter the first exception IP address into the Exceptions field provided.
Step 5 If there are multiple exception addresses, click Add Exception to add another field for entering an exception address, and then enter the proxy exception address.
Repeat this step for each exception address.
Step 6 Click Save Changes.
Step 7 Repeat Step 1 through Step 6 for each device that requires changes to its proxy server settings.
Step 8 From the Devices menu, click System to reboot each device with changes to its proxy settings, beginning with any affected CEs.
The System screen appears.
Step 9 Choose a CE from the Device Selector list.
The Device Editor System screen displays the CE system information.
Step 10 Click System Reboot.
Step 11 Repeat Step 8 through Step 10 for each affected CE and the CDM.
You are ready to resume use of the CDN with new proxy settings when your CDM finishes rebooting.
Users can be assigned either administrator-level or user-level privileges.
Users are added using the CDM interface.
To add a user:
The Users dialog box appears. (See Figure 2-6.)
Step 2 From the Device Selector field, choose the name of the CDM.
Options for editing user accounts appear. Accounts are listed alphabetically.
Step 3 Enter the new username in the field next to the Add User button.
Step 4 Enter a new password for the user in the Enter Password field.
Step 5 Enter the new password a second time in the Re-enter Password field.
Step 6 Click the Admin or User button to designate the access level of the account, and then click Add User.
The new user is added to the user list.
Users accounts are removed using the CDM Users feature.
|
Note It is not possible to remove the admin account, nor is it possible to remove the current user's account. |
To remove a user:
The Users dialog box appears. (See Figure 2-6.)
Step 2 From the Device Selector field, choose the name of the CDM.
Options for editing user accounts appear. Accounts are listed alphabetically.
Step 3 Locate the name of the user you wish to remove.
Step 4 Click Remove next to the username that you want to remove. If you are attempting to remove the current account (the account you used to log on), you will be prompted to log on again using another administrator account before you are allowed to delete the account you were using.
User privileges can be modified using the CDM Users feature. To change user privileges:
The Users dialog box appears. (See Figure 2-6.)
Step 2 From the Device Selector field, choose the name of the CDM. Options for editing user accounts appear. Accounts are listed alphabetically.
Step 3 Locate the account you wish to edit.
Step 4 In the far right column, click either the Admin or User button to change the designation of the account.
Step 5 Click Change.
Change the password of a user or administrator through the Users feature. Passwords can only be changed from the CDM interface.To change a user password:
The Users dialog box appears. (See Figure 2-6.)
Step 2 From the Device Selector, choose the name of the CDM. Options for editing user accounts appear. Accounts are listed alphabetically.
Step 3 Locate the user or administrator account for which you wish to change passwords.
Step 4 Enter the new password in the Enter Password field.
Step 5 Enter the new password again in the Re-enter Password field.
Step 6 Click Change. If the screen refreshes without error, you have changed your password. If you encounter an error, see "Error Messages."
The CDN system ships with a default administrator account already configured. This account, which uses the admin username, gives administrators full access to the CDM graphical interface.
The admin account can be accessed and edited in the same manner as other user or administrative accounts:
The Users dialog box appears. (See Figure 2-6.)
Step 2 From the Device Selector field, choose the name of the CDM. Options for editing user accounts appear. Accounts are alphabetically listed.
Step 3 Locate the admin account.
Step 4 Enter the new password in the Enter Password field.
Step 5 Enter the new password again in the Re-enter Password field.
Step 6 Click Change.
The Enter Network Password dialog box appears.
Step 7 Enter the new admin password a third time in the Password field provided and click OK. If the screen refreshes successfully, you have changed the password. If you encounter an error, see "Error Messages."
Ordinarily, CDN administrators change the admin account password in the same manner as any other account's password. See the "Changing a User Password" section for details on changing passwords for accounts.
However, if you lose track of the password for the admin account and accidentally lock yourself out of the CDM interface, you must manually reset the password for the admin account before regaining access to the CDM and the Users feature.
Resetting the admin account password restores the factory-configured password to the account. After resetting this password and rebooting the CDM, administrators can again log on using the admin account and configure the password for the account, as well as for other user and administrative accounts.
|
Note In order to reset the password for the admin default administrator account, you must have physical access to the CDM device and have sufficient permissions to be able to log on to that device. |
Use the following procedure to reset your default administrator password:
Step 2 Terminate any active Linux sessions by entering exit at the prompt.
Step 3 Reboot the CDM machine by powering the machine off, and then on again. Refer to the Cisco Content Engine 500 Series Hardware Installation Guide, or the Cisco Content Networking Hardware Installation Guide for the Seven-Rack Unit Chassis for information on locating the power button and rebooting your CDM hardware.
Step 4 Reboot the CDM and wait for the following prompt:
LILO Boot:
Step 5 If your CDN devices are using Cisco hardware, enter the following command to log on to the CDM as a single user, then press Enter:
LILO Boot# linux single
If your CDN devices are installed on hardware that was not manufactured by Cisco Systems, enter the following command to log on to the CDM as a single user, instead of the command listed above. Press Enter to initiate log in.
LILO Boot# linux single console=tty0
Step 6 Enter the path for the reset password script, resetpass, as follows at the bash# prompt:
bash# source /sonoma/sys/bin/resetpass
The script executes, resetting the password for the admin account and rebooting the CDM machine. Once the CDM has completed its reboot, you can log on using the default administrator account by entering the user name, admin, and the factory-configured password.
Use the CDM Bandwidth feature to set the maximum bandwidth to be used by each device for replicating media to the CEs and for streaming media to end-user desktops. Bandwidth controls limit the bandwidth consumed by your CDM and CEs. Bandwidth can be limited in megabytes per second (Mbps) for both replication and playback.
Intelligent bandwidth management provides the ability to limit the maximum bandwidth allowed for replication between CDN devices to particular days of the week and hours of the day.
Each device has a specific playback bandwidth that it uses when streaming media to users' desktops. Although this bandwidth value can be changed, it is not possible to schedule changes to the playback bandwidth, as it is with replication bandwidth.
To set the playback bandwidth for a device from the CDM:
Step 2 The Bandwidth dialog box appears. (See Figure 2-7.)
Step 3 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
Step 4 In the Playback field, type in a bandwidth value in megabytes per second (Mb/s).
Step 5 Click Save Changes to store the new playback bandwidth setting for the selected device.
Clicking Cancel Changes returns all values to their previous settings when you last clicked Save Changes.
All CDN devices ship with a default replication bandwidth set. This bandwidth setting is enabled from 12:00 a.m. to 11:59 p.m. (24 hours) for each day of the week. Although the default replication bandwidth can be changed, its operating schedule cannot. Instead, you use the Bandwidth feature to create additional replication settings to take effect at certain times during the week.
To add a replication bandwidth setting for moving media files over the network:
The Bandwidth dialog box appears. (See Figure 2-7)
Step 2 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
Step 3 Click Add Bandwidth.
A new bandwidth setting is added to the bottom of the bandwidth list and options appear for configuring the new bandwidth setting.
Step 4 In the Bandwidth field, enter the replication bandwidth value for this setting in megabytes per second (Mb/s).
Step 5 Above the Bandwidth field, set the time at which the device will begin to replicate media using this bandwidth by entering a time in the From field and clicking AM or PM.
|
Note Replication times are in local time for each device. |
Alternately, click the 24 hour or 9-5 buttons to set the interval from 12:00 a.m. to 11:59 p.m. (24 hours), or 9:00 a.m. to 5:00 p.m.
Step 6 Next, set the time at which the device will cease replicating media at this bandwidth by entering a time in the To field and clicking AM or PM.
|
Note New time-of-day settings take precedence over previous settings if the intervals overlap. |
Step 7 In the area beneath the Bandwidth field, check the appropriate Days check boxes to set which days of the week the device will use the replication bandwidth you are configuring.
You can click ALL to choose every day or click NONE to clear your selections.
Step 8 Click Save Changes. Clicking Cancel Changes returns all values to their previous settings when you last clicked Save Changes.
The screen will refresh, updating the replication bandwidth schedule for the device.
On those days you specified, the device replicates media at the bandwidth you set during the hours you specified. Remember that the device operates according to its local time zone. See the "Setting Time Zones" section for information on establishing time zones for your CDN.
To remove a replication bandwidth setting:
The Bandwidth dialog box appears. (See Figure 2-7.)
Step 2 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
Step 3 Click Edit next to the interval setting that you want to remove.
Step 4 Click Remove Bandwidth at the top of the screen.
To edit a replication bandwidth setting:
The Bandwidth dialog box appears. (See Figure 2-7.)
Step 2 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
Step 3 Click Edit next to the interval setting that you would like to change.
Step 4 Modify the playback and replication bandwidths, time intervals, and days of the week.
Step 5 Click Save Changes.
Use this option to set the region and time zone for each device.
To set the time zone for a device:
The Time Zone dialog box appears. (See Figure 2-8.)
Step 2 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list. Some general information about the selected device is displayed.
Step 3 Click a region in the Region list. When you have selected a region, the zone/city settings change correspondingly.
Step 4 Choose a time zone or city in the Zone/City list.
Step 5 Click Save Changes.
Clicking Cancel Changes returns all values to their previous settings when you last clicked Save Changes.
Use the PC Folders option to configure your devices so that they appear in your Network Neighborhood.
|
Note Your office network must be running the Windows 95/98 or Windows NT operating system in order to use the PC Folders option to import media files. |
To configure PC Folders:
The PC Folders dialog box appears. (See Figure 2-9.)
Step 2 Make sure the correct device is displayed in the Device Selector field. If it is not, click the correct device in the list.
General information about the selected device is displayed.
Step 3 In the Workgroup field, enter the workgroup of the Microsoft Windows PC that will be used to browse the CDM media import directories.
Step 4 In the WINS Server field, enter the IP address of the Windows Internet Name Services (WINS) server.
Step 5 In the Remote Announce field, enter either the IP address of the PC that will be used for Web browsing or the address of the network that the PC is on.
Step 6 Click Save Changes.
Cisco's CDN includes support for LAN-based back-channel multicasting of media as part of its support for RealNetworks' RealServer version 7. This feature, which is built into the RealServer 7 release, enables CDN installations to conserve network bandwidth by sending a single media stream to multiple clients on a LAN, rather than streaming media to each requesting client individually.
Back-channel multicasting streams content between the RealServer and clients while maintaining a simultaneous accounting control channel between each client and the RealServer. This extra control channel is used to transmit authentication information as well as client commands like "start" and "stop." Back-channel multicasting enables the RealServer to track client behavior and display statistics during viewing, including real-time data on the number of clients receiving a presentation. Data collected can be reviewed and analyzed using the Java Monitor or RealSystem Administrator.
Once enabled, back-channel multicasting is applied to all streams broadcast from your RealServer. Clients that have been preconfigured to use multicasting will do so, maximizing the bandwidth available to multicasting and unicasting clients alike.
Although you typically use the built-in administrative features of RealServer to configure multicasting, it is possible to enable multicasting remotely from your CDM interface.
To use the CDM to enable multicasting:
http://your_Content_Distribution_Manager_ip_address/cgi-bin/mc
where your_Content_Distribution_Manager_ip_address represents the IP address or DNS domain name of your CDM.
Step 2 With the Enable Multicast options displayed in your browser window, click the Enable Multicast drop-down list and choose Yes. This enables the multicasting feature on the RealServer used by your CDM.
Step 3 Enter the range of addresses to which you will be sending multicast streams in the IP Address Range fields. Remember that broadcasts of video content require two addresses—one for video content and one for audio content. Refer to "Calculating Addresses for Back-Channel Multicasts" in the RealServer Version 7 Administration Guide for more information. The RealServer uses the first available address in the range you specify.
Step 4 Set the maximum distance that streamed packets can travel over a network, as measured in hops from one multicast-enabled router to another, by entering a Time-To-Live value in the Time to Live field provided. Each time a multicast data packet passes through a multicast-enabled router, its Time-To-Live value is decreased by 1. Once the value reaches 0, the RealServer discards the packet.
|
Note For typical networks, a Time-To-Live value of 16 is adequate to keep packets within the network. |
Step 5 Click Set when you are finished.
The multicast settings are saved back to the RealServer used by your CDM.
Posted: Wed Sep 27 14:11:21 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.