Extreme networks BlackDiamond 8810 10-Slot Chassis 41011 Scheda Tecnica

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BlackDiamond 8800 Series—Page 2

The BlackDiamond 8800 series of 
modular switches are configured with an 
automatic failover mechanism so that if 
one Management Switch Module (MSM) 
fails, the second MSM will automatically 
take over management responsibility for 
the entire switch. This feature is critical 
for networks running voice and other 
mission-critical applications. This 
capability is not available for the 
BlackDiamond 8500-series modules.

BlackDiamond 8800 series switches 
include a passive backplane complement-
ed by high availability design elements 
such as isolated control and data planes, 
redundant controller boards for power 
distribution, and fan control and environ-
mental monitoring to identify anomalies 
before they affect network availability. 

BlackDiamond 8800 series switches 
support a set of redundant power 
configurations that can load share up to 
six internal power supplies simultaneous-
ly. Three power supplies in a 2 + 1 
redundancy configuration can power a fully 
loaded chassis with gigabit or 10 Gigabit 
Ethernet ports. In addition, without the 
need of an external power tray, three 
power supplies are available to support 
large PoE implementations. 

 

Redundant cooling is delivered by a tray 
of nine fans (BlackDiamond 8810) or six 
fans (BlackDiamond 8806). The fan tray 
itself is hot swappable so the 
BlackDiamond 8800 series switches keep 
operating while the fan tray is replaced. 

BlackDiamond 8800 series switches allow 
each of the many protocols such as Open 
Shortest Path First (OSPF) and Spanning 
Tree to run as separate OS processes that 

are protected from each other. This 
drives increased system integrity and 
inherently protects against Denial of 
Service (DoS) attacks. 

ExtremeXOS dramatically increases 
network availability using process 
monitoring and restart. Each indepen-
dent OS process is monitored in real time. 
If a process becomes unresponsive or 
stops running, it can be automatically 
restarted. 

The modular design of ExtremeXOS 
allows the upgrading of individual 
software modules, should this be 
necessary, leading to higher availability in 
the network (see Figure 1). 

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 and delivering 
consistent failover regardless of number 
of VLANs, number of network nodes or 
network topology. In most situations, 
VoIP calls do not drop and digital video 
feeds do not freeze or pixelize because 

EAPS allows the network to recover 
almost transparently from link failure.

BlackDiamond 8800 series switches 
support Spanning Tree (802.1D), Per 
VLAN Spanning Tree (PVST+), Rapid 
Spanning Tree (802.1w) and Multiple 
Instances of Spanning Tree (802.1s) 
protocols for Layer 2 resiliency. 

Software enhanced availability allows 
users to remain connected to the network 
even if part of the network infrastructure 
is down. BlackDiamond 8800 series 
switches constantly check for problems in 
the uplink connections using advanced 
Layer 3 protocols such as OSPF, VRRP 
and Extreme Standby Router Protocol™ 
(ESRP) (ESRP supported in Layer 2 or 
Layer 3), and dynamically route around 
the problem. 

Equal Cost Multipath enables uplinks to 
be load balanced for performance and cost 
savings while also supporting redundant 
failover. If an uplink fails, traffic is 
automatically routed to the remaining 
uplinks and connectivity is maintained. 

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.