Dialogic 1000Series, Руководство пользователя

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50 Dialogic
®
1000 and 2000 Media Gateway Series User’s Guide
Parameter Reference
Figure 7. Example of a Network Topology
Two routes are required in this topology so that:
1. LAN1 can access LAN1 Subnet B
2. LAN2 can access LAN2 Subnet B
The IP Router 1 may be configured as the default network gateway. However, the DMG2000 must
also be configured to use IP Router 2 as a network gateway. A custom route must be created so that
LAN2 can access LAN2 Subnet B. In addition, the default network gateway may be optionally
replaced by another custom route. The custom route would allow LAN1 to access LAN1 Subnet B
without using a default network gateway.
A default network gateway route blindly forwards IP packets whose destination is not the local
subnet. A custom route is specific. It contains a single routing rule that specifically states when an
IP packet is forwarded to a specific network gateway. This means that multiple custom routes may
be installed on the same gateway to access multiple subnets. Each route contains a configured rule
that directs the LAN interface, subnet mask and network gateway.
The advanced IP route rules include the following parameters:
• Ethernet Interface
•
Destination Address
•
Destination Mask
• Gateway Address