Руководство Пользователя для Nortel 4000

4-41

Chapter 4    Setting Up RACs

Managing Remote Access Concentrators Using Annex Manager

•

If any of the values set for individual ports or channels using
other methods (

admin

,

na

, or Customized mode) are non-

consecutive, this field and the

Last Remote Address

 field are

blank.

•

If you change the

First Remote Address

 and click

Apply

, the IP

address you entered is assigned to the first port or channel of
the Annex you selected in the

Main

 window. Subsequent ports

or channels are then assigned IP addresses numbered
consecutively after the first address (if you enter 0.0.0.0, all IP
addresses in the range are assigned this value). For 5399
devices, IP addresses are assigned consecutively beginning
with the first channel of the first WAN Module and ending with
the last channel of the second WAN Module.

The

 PPP Interface Protocol

 box lists the control protocols for which the RAC

negotiates. You can select a single button or any combination of buttons:

•

atcp

 - the AppleTalk Control Protocol

•

ipcp

 - the Internet Protocol Control Protocol

•

ipxcp

 - the Internet Packet Exchange Control Protocol

If you want ccp compression for the selected RACs, select

ccp

. Otherwise

compression is turned off.

Multisystem Multilink PPP (MMP) is a superset of Multilink PPP. It
allows MP links for a telco hunt group to terminate on multiple RACs.
The RACs are combined together in an MMP group to use all of the
incoming channels in the group, increasing the potential bandwidth of an
MP bundle. The RACs support MMP for incoming calls only.

MMP is available only on ISDN-based products: 6300, 5393, 5399, 8000.