Specifications

Section 364-180-202
6
3 APPLICATION GUIDELINES
Provisioning each of the feature sets creates a wide range of possible applications for the router. This
section will show the most common use of these features but not the only combinations that could be
used.
A form is included to assist in determining the provisioning of the system. See optioning section for form.
3.1 LAN General Features
The router card provides support for IP through TCP, UDP, ICMP, BOOTP and ARP. For address and
domain resolution the router supports DHCP (client, relay or server) and DNS (client and relay).
Administrators can use both FTP and TFTP for code and configuration updates. To maintain a log of
router activity SYSLOG is supported. The ability to handle broadcasts over the network is supported by
IGMP. SNTP will allow the system to set its time to a network device.
The router will work in either bridge or routed modes in both client-client or client-server end-to-end
configurations. When used in conjunction with non-Charles routers, the router should be used in the client
configuration.
3.2 Private Network Bridge Extension
To extend a private network to a new location you can do this using the bridge or router feature. Figure 4
illustrates a typical private network application. The unit can be provisioned to provide routing or bridging
over the T1/E1 to the remote network. If the router is provisioned for bridge mode, all IP traffic from the
Ethernet interface will be sent to the remote router and output to the remote network.
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Ethernet
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Figure 4. Point-to-Point Private Network Application
The advantage of using a bridge is that it requires less provisioning and bridges the same LAN subnet. In
this application the LAN Bridge and the WAN protocol feature sets are the only ones that need to be
configured. In this application the router is transparent to all IP traffic. The LAN general feature set can be
provisioned as desired. An IP address can be provisioned if Ethernet management is desired. The WAN
interface is normally configured for PPPoH with no authentication since the network is private. For more
detailed information on the provisioning of the router, see the Quick Start-up reference guide and script
library.
3.3 Private Network Router Extension
For private networks that want to reduce the amount of data over the WAN interface to only the data that
is going from the local LAN to the remote LAN should configure the router as a router. In this application
the router feature set and the WAN protocol need to be provisioned. In this application the router will