VG248 Software Configuration Guide v1.2
Getting Started with the VG248
Downloads: This chapterpdf (PDF - 295.0KB) The complete bookPDF (PDF - 1.3MB) | Feedback

Getting Started with the VG248

Table Of Contents

Getting Started with the VG248

Accessing Configuration Options

Using the Console Port

Using Telnet

Displaying the Main Menu

Restarting the VG248

Configuring Network Settings

Setting the Host Name

Configuring Ethernet

Using DHCP

Renewing IP Address from DHCP

Assigning a Static IP Address

Setting the IP Address

Setting the Subnet Mask

Setting the Default Router

Setting the DNS Server

Setting the Domain Name

Committing the Changes to the Static IP Settings

Enabling CDP

Setting DSCP Quality of Service Values

Configuring Passwords

Configuring the Login Password

Configuring the Enable Password

Configuring SNMP Settings

Setting Community Strings

Configuring Contact Information

Configuring Contact Name

Configuring System Name

Configuring Location

Configuring Trap Settings

Enabling Authentication Traps

Configuring Trap Receiver Stations


Getting Started with the VG248


Before you can configure the telephony features on the VG248 to interact with the analog phones, you must first configure the basic network, SNMP, and password settings. These settings enable the VG248 to connect to the IP network and help you manage the device.

These sections provide details about configuring these settings on the VG248:

Accessing Configuration Options

Restarting the VG248

Configuring Network Settings

Configuring Passwords

Configuring SNMP Settings

Accessing Configuration Options

You can access the VG248 configuration options, after the device has started up, using a console terminal connected to the RJ-45 console port or through a Telnet session.

Using the Console Port

You might want to use the console port to connect to the VG248 when you initially install the device. This enables you to observe the initial startup procedure and manually assign an IP address and host name if you are not using DHCP.

Procedure

To access the VG248 through the console RJ-45 port, perform these steps.

 
Task
Description

Step 1 

Connect the console terminal to the console port.

See the Cisco VG248 Analog Phone Gateway Hardware Installation Guide.

Step 2 

At the prompt, enter the password.

The VG248 does not have a default password. If no password has been configured, the main menu displays.

<password>

Step 3 

Choose the necessary options to complete your desired tasks.

Choose the desired option from the menus.

Step 4 

When finished, exit the session.


Using Telnet

To access the VG248 through a Telnet session, you must know its IP address or host name. By default, the device uses DHCP. If you want to assign a specific IP address or host name, you must first configure the network settings using the console port before connecting through a Telnet session.

Procedure

To access the VG248 from a remote host with Telnet, perform these steps:

 
Task
Command

Step 1 

From the remote host, enter the telnet command and the host name or IP address of the VG248 that you want to access.

telnet hostname | ip_addr

Step 2 

At the prompt, enter the password, if you have configured one.

The VG248 does not have a default password. If no password has been configured, the main menu displays.

<password>

Step 3 

Choose the necessary options to complete your desired tasks.

Choose the desired option from the menus.

Step 4 

When finished, exit the Telnet session


Displaying the Main Menu

After connecting to the VG248 through the console port or a Telnet session, the main menu appears (see Figure 2-1). Follow these guidelines to navigate the menus:

Use the arrow keys or numeric keypad to navigate the available options.

Press Enter to choose an option.

Press Esc to return to the previous menu.

Figure 2-1 VG248 Main Menu

Restarting the VG248

Although not required for configuration, you should restart the VG248 after upgrading or downgrading the software.

Procedure

To restart the VG248, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Restart.


Configuring Network Settings

You must configure the network settings on the VG248 to connect it to the IP network.

These sections describe the configurable network settings on the VG248:

Setting the Host Name

Configuring Ethernet

Using DHCP

Renewing IP Address from DHCP

Assigning a Static IP Address

Enabling CDP

Setting DSCP Quality of Service Values

Setting the Host Name

The host name identifies each VG248 on your TCP/IP network, enabling you to access the device using this name rather than the IP address. By default, this value is set to be the same as the device name registered in the Cisco CallManager database. This device name is a unique character string generated based on the MAC address for the VG248 (see the "Adding the VG248 to Cisco CallManager" section.

Procedure

To set the host name, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Host name.

Step 4 Enter the host name to be used by the VG248.


Configuring Ethernet

The VG248 fully supports 10/100 Mbps half- and full-duplex Ethernet. If you choose auto-negotiation, the VG248 automatically negotiates the speed and duplex mode with the switch to which it is attached; this is the default setting. The switch port used by the VG248 should also be set to auto-negotiation.

Procedure

Follow these steps to configure the VG248 as your network requires:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Ethernet.

Step 4 Choose the option that matches the setting on the switch to which the VG248 is connected:

auto-negotiation

100Mb/s half duplex

100Mb/s full duplex

10Mb/s half duplex

10Mb/s full duplex


Using DHCP

If you are using Dynamic Host Configuration Protocol (DHCP) in your network, the VG248 automatically obtains an IP address when you connect it to the network. Although the VG248 uses DHCP by default, you can disable DHCP and manually assign an IP address to the VG248.

Before You Begin

If you do not use DHCP, you must enter the additional network settings. See the "Assigning a Static IP Address" section for details:

Procedure

To use DHCP, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Use DHCP.

Step 4 Press Enter to toggle between yes (use DHCP) and no (do not use DHCP).


Renewing IP Address from DHCP

You might need to renew the IP address automatically assigned to the VG248. For example, if you have changed the physical location of the VG248 from one subnet to another or if you need assistance troubleshooting a connectivity problem.

Procedure

To renew an IP address assigned by DHCP, follow these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Renew DHCP.


Assigning a Static IP Address

Rather than using DHCP to obtain an IP address, you can assign a static IP address to the VG248. You can also change any of these settings even if you are using DHCP in your network. To assign a static IP address, you must manually assign several network settings described in these sections:

Setting the IP Address

Setting the Subnet Mask

Setting the Default Router

Setting the DNS Server

Setting the Domain Name

Setting the IP Address

The IP address identifies each VG248 on your TCP/IP network. You must enter the IP address if you are not using DHCP. The VG248 automatically obtains an IP address if you are using DHCP.

Before You Begin

An asterisk (*) appears next to any setting that you have changed until you commit the changes. See the"Committing the Changes to the Static IP Settings" section for details.

Procedure

To assign an IP address, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose IP address.

Step 5 Enter the IP address to be used by the VG248.


Setting the Subnet Mask

You must enter the subnet mask if you are not using DHCP. The VG248 automatically obtains a subnet mask if you are using DHCP.

Before You Begin

An asterisk (*) appears next to any setting that you have changed until you commit the changes. See the"Committing the Changes to the Static IP Settings" section for details.

Procedure

To set the subnet mask, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose Subnet mask.

Step 5 Enter the subnet mask.


Setting the Default Router

You must enter the default router if you are not using DHCP. The VG248 automatically obtains a default router if you are using DHCP.

Before You Begin

An asterisk (*) appears next to any setting that you have changed until you commit the changes. See the"Committing the Changes to the Static IP Settings" section for details.

Procedure

To set the default router, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose Default router.

Step 5 Enter the IP address of the default router.


Setting the DNS Server

Domain Name System (DNS) allows users to specify remote computers by host names. The VG248 uses DNS to resolve the host name of TFTP servers and Cisco CallManager systems when the system is configured to use names rather than IP addresses.

Before You Begin

An asterisk (*) appears next to any setting that you have changed until you commit the changes. See the"Committing the Changes to the Static IP Settings" section for details.

Procedure

To set the DNS server, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose DNS server.

Step 5 Enter the IP address of the DNS server.


Tips You can enter a secondary DNS server by choosing Network interface > DNS server 2 and entering the IP address.



Setting the Domain Name

The domain name is the name of the Domain Name System (DNS) domain in which the VG248 is located.

Before You Begin

An asterisk (*) appears next to any setting that you have changed until you commit the changes. See the"Committing the Changes to the Static IP Settings" section for details.

Procedure

To set the domain name, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose Domain name.

Step 5 Enter the domain name.


Committing the Changes to the Static IP Settings

After making any changes to the static IP settings, you must commit the changes to apply them. Keep in mind that depending on the changes made, you might lose connectivity to the IP network.


Tip If you choose not to accept these settings, choose Configure > Network interface > Static IP settings > Reset values to return to the previous settings.


Procedure

Follow these steps to accept the changes you've made:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Static IP settings.

Step 4 Choose Commit Changes.


Enabling CDP

The VG248 can advertise itself to other network devices using Cisco Discovery Protocol (CDP). Many network management applications require that CDP is enabled.

Procedure

To enable CDP, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose CDP.

Step 4 Press Enter to toggle between enabled and disabled.


Setting DSCP Quality of Service Values

Differentiated Services Code Point (DSCP) is an IETF standard that uses six bits in the IPv4 header's Type of Service (ToS) field to specify the class of service for each packet. You can modify the assigned DSCP Quality of Service (QoS) value for certain types of traffic. This enables you to give priority to media traffic over control traffic.

Procedure

To enable modify the DSCP QoS values, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Network interface.

Step 3 Choose Set DSCP QoS values.

Step 4 Choose one of the following options:

Media traffic—RTP packets carrying voice, fax, and modem calls

Control traffic—SCCP data packets carrying telephony control data

All other traffic—such as FTP, HTTP, SNMP, and so on

Step 5 Enter the new value for Media traffic or Control traffic from 0 to 63, using decimal format.

By default, Media traffic is set to 46, and Control traffic is set to 26. You cannot change the value for All other traffic; it is set to 0.


Configuring Passwords

The VG248 ships without a set or enabled password. You should enable passwords to prevent unauthorized access to and control of the VG248. The VG248 does not support or use user names.

Once you set a password, however, the VG248 requires that you use it, whether you are accessing the device using the console port, telnet, HTTP, or FTP. When using the HTTP, you are required to enter the login password if one is set; you cannot modify any settings when accessing the VG248 using HTTP. When accessing the VG248 using FTP, the FTP server adopts the highest level of security currently set. For example, if you have set both a login and enable password, you must use the enable password to use FTP.


Caution By default, the VG248 does not have an assigned password. To avoid unauthorized access, assign passwords to this device.

Configuring the Login Password

The login password enables you or other users to view the current status of the VG248.

Procedure

To configure the login password, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Passwords.

Step 3 Choose Login password.

Step 4 Enter the new password.


Configuring the Enable Password

The enable password allows you to view current settings and make changes to the VG248. Once set, you must use the enable password to make changes to the VG248.

Procedure

To configure the enable password, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose Passwords.

Step 3 Choose Enable password.

Step 4 Enter the new password.


Configuring SNMP Settings

The VG248 supports Simple Network Management Protocol (SNMP) by supporting standard MIBs. Modify the SNMP settings as appropriate for your network management needs. You need to configure the SNMP settings if you want to manage the VG248 remotely.

Setting Community Strings

The community string settings enable network management systems to access the VG248 for remote management.

You can configure a read-only password, which restricts access to the device, allowing users to view information but not to make changes. You can also configure a read-write community string, which allows users to make changes to the device remotely.

By default, the read-only community string is set to public, which provides read-only access. If you do not set these community strings on the VG248, you cannot manage the device remotely using the Simple Network Management Protocol (SNMP).

Procedure

To set the community strings, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 To set the read-only community string, choose Read-only community string.

Step 4 To set the read-write community string, choose Read-write community string.

Step 5 Enter the community string value.


Configuring Contact Information

You can enter the contact name of the person responsible for the VG248 and the location of the VG248 on your campus.

Configuring Contact Name

The contact name on the VG248 corresponds to the sysContact variable defined in RFC 1213.

Procedure

To add a contact name indicating the person responsible for the VG248, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 Choose Contact name.

Step 4 Enter the name of the person responsible for the VG248.


Configuring System Name

The system name on the VG248 corresponds to the sysName variable defined in RFC 1213.

Procedure

To specify the system name of the VG248 to the network management system perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 Choose System name.

Step 4 Enter the system name of the VG248.


Configuring Location

The location on the VG248 corresponds to the sysLocation variable defined in RFC 1213.

Procedure

To add the location of the VG248 in your network or on your site, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 Choose Location.

Step 4 Enter the location of the VG248.


Configuring Trap Settings

You can configure the VG248 to notify up to four network management systems when certain significant system events occur. You can also specify the IP address for the network management system that is acting as a trap receiver. See the "Understanding Trap Support" section for information about supported trap types.

Enabling Authentication Traps

Procedure

To enable authentication traps, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 Choose Generate authentication traps.

Step 4 Press Enter to toggle between yes and no.


Configuring Trap Receiver Stations

Procedure

To set up to four trap receiver stations, perform these steps:


Step 1 From the main menu, choose Configure.

Step 2 Choose SNMP.

Step 3 Choose Trap receiver stations.

Step 4 Enter the IP address or host name of the network management system used to receive the traps.