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Configuring IP Routing
Configuring WAN interfaces
MAX 6000/3000 Network Configuration Guide 9-31
UDP checksums for ensuring data integrity
If data integrity is of the highest concern for your network, and having redundant checks is
important, you can turn on UDP checksums to generate a checksum whenever a UDP packet is
transmitted. UDP packets are transmitted for queries and responses related to ATMP,
SYSLOG, DNS, ECHOSERV, RADIUS, TACACS, RIP, SNTP, and TFTP.
Set Ethernet > UDP CKsum to Yes to turn on UDP checksums. Enabling this parameter might
cause a slight decrease in performance, but in most environments the decrease is not
noticeable.
Suppressing host route advertisements
The MAX unit creates host routes for Dial-in sessions and advertises them back to the
backbone. Dial-in sessions can cause excessive routing updates and, consequently, network
delays. You can set the Ethernet > Mod Config > Suppress Hosts Routes parameter to reduce
the routing updates caused by dial-in sessions.
Configuring WAN interfaces
To define a WAN interface, you need to enable IP routing and configure routes in Answer and
Connection profiles. In addition, you need to make sure that remote hosts are properly
configured.
This section introduces the basic requirements for each of these steps.and provides examples
illustrating the procedures for using the parameters to configure WAN interfaces.
In addition, this section explains how to configure the MAX to set priority bits and
Type-of-Service (TOS) classes (as defined in RFC 1349: Type of Service in the Internet
Protocol Suite) for customer applications.
For detailed information about each parameter and command in the following sections, see the
MAX Reference.
Enabling IP routing
To enable the MAX unit to negotiate an IP routing connection, you set Answer > PPP Options
> Route IP to Yes.
To enable IP packets to be routed for a WAN interface, set the Route IP parameter to Yes in the
Connection profile. When you enable IP routing, IP packets are always routed, never bridged.
Configuring routes for WAN connections
To configure routes for WAN connections, you need to specify addresses, and, if desired,
enable and configure dynamic IP addressing in Connection and/or Answer profiles.