Extreme Networks BlackDiamond 12804 User Manual download pdf (Page 3)

Configuration Management

(CLI/SNMP/XML/Scripts)

ExtremeXOS Application Modules

ExtremeXOS Kernel-Loadable Modules

ExtremeXOS Kernel

Hardware Abstraction Layer

Hardware

sFlow

SSH2 OSPF VRRP

Network

802.1x

STP EAPS ESRP

BlackDiamond 12804C—Page 3

Extreme Networks Data Sheet

Voice-Class Availability

Redundant Hardware Design

Fully Redundant Management

Modules (1:1)

BlackDiamond 12804C is conﬁgured so

that if one Management Switch Module

(MSM) fails, the second MSM will

automatically take over management

and switching responsibility for the

entire switch. This feature is critical for

networks running voice and other

mission-critical applications.

Advanced Chassis Design

for Availability

BlackDiamond 12804C includes a

passive backplane complemented by high

availability design elements such as

isolated control and data planes,

redundant controller boards for power

distribution and fan control, and

environmental monitoring to identify

anomalies before they affect network

availability.

Redundant Load Sharing

Power Supplies

BlackDiamond 12804C supports a set of

redundant power conﬁgurations that can

load share up to six internal power supplies

simultaneously. These power supplies can

be conﬁgured in an N + 1 conﬁguration

for power supply redundancy or in an

N + N conﬁguration to provide input

power redundancy for a fully loaded

chassis.

Modular Operating System for

Non-stop Operations

True Preemptive Multitasking

and Protected Memory

ExtremeXOS allows each of the many

tasks—such as Open Shortest Path First

(OSPF) and Spanning Tree—to run as

separate operating system tasks that are

protected from each other as shown in

Figure 2.

Process Monitoring and Restart

ExtremeXOS dramatically increases

network availability by monitoring the

independent operating system processes

in real time. If any of them become

unresponsive, or stop running, they are

automatically restarted.

Loadable Software Modules

The modular design of ExtremeXOS

allows the extension of switch functional-

ity. New functionality can easily be added

to the switch.

High Availability

Network Protocols

Ethernet Automatic

Protection Switching

EAPS allows the IP network to provide the

level of resiliency and uptime that users

expect from their traditional voice networks.

EAPS is superior to the Spanning Tree or

Rapid Spanning Tree Protocols, offering

sub-second (less than 50 milliseconds)

recovery. In most situations, VoIP calls

don’t drop and digital video feeds don’t

freeze or pixelize because EAPS enables

the network to recover almost transpar-

ently from link failure.

Spanning Tree/Rapid Spanning

Tree Protocols

BlackDiamond 12804C supports Spanning

Tree, VLAN Spanning Tree (802.1D), and

Rapid Spanning Tree (802.1w) protocols

for Layer 2 resiliency.

Software Enhanced Availability

Software enhanced availability allows

users to remain connected to the network

even if part of the network infrastructure

is down. ExtremeXOS constantly checks

for problems in the network connections

using advanced Layer 3 protocols such as

OSPF (with graceful restart), VRRP and

ESRP (ESRP supported in Layer 2 or

Layer 3), and dynamically routes around

the problem.

Equal Cost Multipath

Equal Cost Multipath enables links to be

load balanced for performance and cost

savings while also supporting redundant

failover. If a link fails, trafﬁc is automati-

cally routed to the remaining links and

connectivity is maintained.

Link Aggregation (802.3ad)

Cross module link aggregation enables

trunking of up to eight links on a single

logical connection, for up to 80 Gbps of

redundant bandwidth per logical connection.

A high-performance network connection, whether used to connect PCs and IP telephones at the access layer or to interconnect

servers in a cluster, is only useful if it is also highly available. BlackDiamond 12804C utilizes ExtremeXOS, the industry-leading

modular operating system from Extreme Networks, that raises the availability of the switch. Network-level resiliency protocols

are added to increase the availability of the network.

Figure 2: ExtremeXOS Modular

Operating System

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Extreme Networks BlackDiamond 12804 User Manual Page 3

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