User guide

Chapter 2. Planning for Router Configuration 39
¥ DNS Internet Account Information (optional)
This information is obtained from the Network Service Provider. Consult with your Network Service
Provider to find out if you need to enter the following information:
¥ DNS server address
¥ DNS second server address
¥ DNS domain name
MAC Encapsulated Routing
MAC Encapsulated Routing (MER) allows IP packets to be carried as bridged frames (bridged format). The Link
Protocol RFC 1483 with MER (referred to as RFC 1483MER) is a multiprotocol encapsulation method over ATM
used by ATM routers. RFC 1490 with MER (referred to as RFC 1490MER) is a multiprotocol encapsulation
method over Frame Relay used by Frame-Relay routers.
RFC 1483MER and RFC 1490MER combined with the IP, IPX, or Bridging Network Protocols share the same
configuration characteristics, except for the connection identifiers: VPI/VCI numbers are used for RFC 1483MER
and a DLCI number is used for RFC 1490.
Obtain the information as described in the appropriate section. This data will be later used to configure your router
using the Command Line Interface (see
Configuration Tables, on page 45).
IP Routing Network Protocol
¥ VPI and VCI Numbers (for RFC 1483MER)
The VPI and VCI numbers apply to ATM routers only. Your router may have been preconfigured with
VPI/VCI numbers. If not, you will have to obtain these numbers from your Network Service Provider
and then configure them.
If you are connecting to multiple remote sites, you will need to obtain additional VPI and VCI numbers
from your Network Service Provider and/or Network Access Provider. These numbers identify the
remote destination and must, therefore, be unique for each remote.
¥ DLCI (for RFC 1490MER)
The DLCI number applies to Frame Relay routers only. Your Network Service Provider or your
Network Access Provider will provide you with a DLCI (Data Link Connection Identifier). The DLCI is
an address identifying your connection.
¥ DNS Internet Account Information (optional)
This information is obtained from the Network Service Provider. Consult with your Network Service
Provider to find out if you need to enter the following information:
¥ DNS server address