VBrick Systems VB4000, VB6000, VB5000 manual Configuration Network Routing, Domain Name Server

MPEG-2 Configuration

Maximum Transmission Unit Size

Range 1024–1500 (default = 1500). The MTU is used for all network traffic from the VBrick and defines the largest network packet size that will be transmitted. A higher MTU brings higher bandwidth efficiency and VBrick recommends using the default. However you may wish to reduce MTU size to meet the requirements of some networks with VPN or other security tunnels that cannot tolerate 1500-byte packets.

Domain Name Server

Primary Server IP	This is the primary server used for DNS.
Address
Secondary Server	This is the secondary server used for DNS.
IP Address
Default Domain	This is the domain name used for DNS. Note that you can use the
Extension	default (blank) values for these items.

Network Time Synchronization

These fields are used to synchronize network time using the host name or IP address of a known server to provide a synchronized time for all appliances in the network. To enable Network Time Synchronization after these parameters are set, go to Configuration: System > General on page 44 and check the box.

Note To Network Administrators. DHCP Option 4 is used by the DHCP server to return SNTP server addresses. This option must be enabled in the DHCP server for these addresses to be returned to the VBrick. If the DHCP server configuration is unknown, it is recommended that the address(es) be manually entered since the DHCP server-supplied address will always override a manually-entered address.

Primary Server IP Address	Primary host name (VBrick Host Name or DNS Host Name)
or Host Name	or IP address of valid SNTP server providing time
	synchronization. A blank field indicates the server address
	will be acquired via the DHCP server only if the Network
	DHCP field above is checked.
Secondary Server IP	Secondary host name (VBrick Host Name or DNS Host
Address or Host Name	Name) or IP address of valid SNTP server providing time
	synchronization. A blank field indicates the server address
	will be acquired via the DHCP server only if the Network
	DHCP field above is checked.

Configuration: Network > Routing

The MPEG-2 Appliance requires no routing configuration for the vast majority of network uses. Use these settings only in those rare cases when your network requires advanced routing features in the appliance.

VBrick MPEG-2 Appliance Admin Guide 11