RAD Data comm ACE-3600 Bedienungsanleitung PDF herunterladen (Seite 2)

ACE-3600

RNC-Site Gateway

Over L2 and L3 networks, ACE-3600 uses

various encapsulation types: VLANs (virtual

LANs), dynamic and static MPLS label

assignment, and MPLS in IP.

USING THE LABEL DISTRIBUTION

PROTOCOL (LDP)

ACE-3600 uses the MPLS label distribution

protocol (LDP) to automatically assign and

distribute pseudowires and tunnel labels

between MPLS peers.

Note: The LDP functionality requires a software

license. For more information, refer to the Ordering

section.

ATM SWITCHING AND POLICING

CAPABILITIES

ACE-3600 provides full ATM switching

capabilities, including scheduling and

shaping of ATM-based traffic.

Operators can assign each virtual

connection (VC) or virtual path (VP) to a

service class, define the QoS parameters

and shape the ATM egress traffic. ATM

traffic policing allows operators to discard,

tag or count non-conformant cells per

configuration.

ACE-3600 allows establishing up to 1024

VP and VC connections with full UNI/NNI

VPI and VCI ranges.

QUALITY OF SERVICE (QOS) OVER PSN

Over packet-switched networks, QoS is

provided according to the network type:

• L2 network – outgoing pseudowire

packets are assigned a dedicated VLAN

ID according to 802.1Q and marked for

priority using 802.1p bits

• MPLS network – outgoing pseudowire

packets are assigned to a specific MPLS

tunnel and marked for priority using

EXP bits

• IP network – outgoing pseudowire

packets are marked for priority using

ToS or DSCP bits.

CLOCK SYNCHRONIZATION

ACE-3600 provides robust clock

synchronization and flexible timing modes,

including:

• Interface-based synchronization – the

clock is recovered from the RX traffic

of a selected interface, in accordance

with G.823 (E1)/G.824 (T1) and

depending on the network's SLA

• Unicast clock distribution – the master

clock is distributed with a dedicated

stream towards up to 512 remote PSN

peers

• Multicast clock distribution – the

master clock is distributed towards the

PSN using a single IP multicast clock

stream (IGMPv2 host).

GENERIC ROUTING ENCAPSULATION

(GRE)

ACE-3600 encapsulates MPLS packets over

GRE to establish point-to-point tunnel

connection over an IP network. This

tunneling service is used to transfer MPLS

packets over an IP network without using

the IP addressing scheme.

HOT-SWAPPABLE MODULES WITH

STM-1/OC-3C AND GIGABIT ETHERNET

INTERFACES

ACE-3600 includes up to two interface

modules, each including up to four

STM-1/OC-3c UNI interfaces and one

Gigabit Ethernet interface.

The STM-1/OC-3c interfaces map physical

layer and ATM cells into STM-1/OC-3c

according to ITU I.432.

The Gigabit Ethernet interface is used for

packet-switched link (PW) connection and

inband management access.

Both the GbE and STM-1/OC-3c interfaces

utilize industry-standard hot-swappable

SFP transceivers that allow using different

fiber optic port types.

INTERFACE MODULE REDUNDANCY

The two interface modules support

Automatic Protection Switching (APS)

according to G.841 Annex B, to ensure a

fail-safe, continuous operation of the

STM-1/OC-3c and Gigabit Ethernet

interfaces.

To allow reliable and uninterrupted service

over packet-switched networks, the

Gigabit Ethernet ports support the 1:1 and

1+1 automatic protection switching

modes according to IEEE 802.3ad.

When two interface modules are installed,

the second module always operates as the

redundant protection module.

Figure 1. 3G Backhaul over a Packet-Switched Network

1 2 3 4 5 6 7 8

Kommentare zu diesen Handbüchern

Keine Kommentare