RAD Data comm 100 Especificações descarregar pdf (Página 57)

Installation and Operation Manual Chapter 1 Introduction

Egate-100 Ver. 4.0 Functional Description 1-25

 User-configurable protocol field compression

 User-configurable address and control field compression

 Echo request and answer support

 Max MRU of 1543 bytes (corresponds to 1536-byte frames)

 Not supported: Authentication

• NCP of type BCP, as per RFC 3518, with MACs support according to 802.3.

LCP/BCP status alarms can be included, as per user configuration.

Multilink PPP

Egate-100 allows the establishment of Ethernet service with bandwidths over the

E1/T1 rate by binding up to eight E1 links or up to eight T1 links into one logical

link, using MLPPP. A logical port associated with these E1/T1 links can represent

 2Mb)/(n  1.5Mb) of Ethernet traffic where n is the number of links.

MLPPP features include:

• Support of up to 42 MLPPP bundles for E1/T1

• Support of up to eight E1/T1 channels by each bundle

• Unframed or fractional E1/T1 with 31/24 timeslots assigned

• Recovery mechanism upon E1 or T1 link failure: shift from n x E1/T1 to

(n-1) x E1/T1

• Worst case of 16 msec-delay compensation buffer for 64-byte frames. For

larger frames the delay compensation grows linearly: for example, 128-byte

frames with a delay compensation of 32 msec

• Support of packet fragmentation.

The supported MLPPP protocols are:

• LCP (Line Control Protocol) as per RFC 1661

 Echo request and answer support

 Max MRU of 1543 bytes (corresponds to 1536-byte frames)

• MLPPP as per RFC 1990

• MLPPP extension to LCP as per RFC 1990: supports 24-bit sequence number

• BCP (Bridge Control Protocol) per RFC 3518

• Loop Detection on the LCP level.

Timing

Egate-100 has a single clock domain and functions as the clock master. All

remote units operate in loopback timing (LBT) mode and use Egate-100 as their

timing source.

With SDH/SONET interface, system clock options are:

• SDH/SONET Rx

• Internal clock.

With DS3 interface, the system clock options are:

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