Extreme networks Summit X450a-24x 16155 Data Sheet
Product codes
16155
© 2010 Extreme Networks, Inc. All rights reserved.
Summit X450a Series—Page 2
Extreme Networks Data Sheet
Voice-Class Availability
Modular Operating System
for Non-Stop Operation
for Non-Stop Operation
True Preemptive Multitasking
and Protected Memory
The Summit X450a series switch allows
each of the many applications—such as
Open Shortest Path First (OSPF) and
Spanning Tree Protocol (STP)—to run
as separate OS processes that are
protected from each other. This drives
increased system integrity and inherent-
ly protects against DoS attacks.
each of the many applications—such as
Open Shortest Path First (OSPF) and
Spanning Tree Protocol (STP)—to run
as separate OS processes that are
protected from each other. This drives
increased system integrity and inherent-
ly protects against DoS attacks.
Process Monitoring and Restart
ExtremeXOS dramatically increases
network availability using process
monitoring and restart. Each independent
OS process is monitored in real time. If a
process becomes unresponsive or stops
running, it can be automatically restarted.
network availability using process
monitoring and restart. Each independent
OS process is monitored in real time. If a
process becomes unresponsive or stops
running, it can be automatically restarted.
Loadable Software Modules
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).
allows the upgrading of individual
software modules, should this be necessary,
leading to higher availability in the network
(see Figure 1).
High Availability Network
Protocols
Protocols
Ethernet Automatic Protection
Switching (EAPS)
EAPS allows the IP network to provide
the level of resiliency and uptime that
users expect from their traditional voice
network. EAPS is superior to Spanning
Tree or Rapid Spanning Tree protocols
and offers sub-second (less than 50
milliseconds) recovery that delivers
consistent failover regardless of the
the level of resiliency and uptime that
users expect from their traditional voice
network. EAPS is superior to Spanning
Tree or Rapid Spanning Tree protocols
and offers sub-second (less than 50
milliseconds) recovery that delivers
consistent failover regardless of the
number of VLANs, network nodes or
network topology. Since EAPS allows the
network to recover almost transparently,
Voice-over-IP calls will not drop and digital
video feeds will not freeze or pixelize in
most situations.
network topology. Since EAPS allows the
network to recover almost transparently,
Voice-over-IP calls will not drop and digital
video feeds will not freeze or pixelize in
most situations.
Spanning Tree/Rapid Spanning
Tree Protocols
The Summit X450a series supports
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.
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
Software-enhanced availability allows
users to remain connected to the network
even if part of the network infrastructure
is down. The Summit X450a series
continuously checks for problems in the
uplink connections using advanced Layer 3
protocols such as OSPF, VRRP and ESRP
(ESRP supported in Layer 2 or Layer 3),
and dynamically routes traffic around the
problem.
users to remain connected to the network
even if part of the network infrastructure
is down. The Summit X450a series
continuously checks for problems in the
uplink connections using advanced Layer 3
protocols such as OSPF, VRRP and ESRP
(ESRP supported in Layer 2 or Layer 3),
and dynamically routes traffic around the
problem.
Equal Cost Multipath
Equal Cost Multipath (ECMP) routing allows
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.
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.
Link Aggregation (802.3ad)
Link aggregation allows trunking of up to
eight links on a single logical connection,
for up to 20 Gigabits per Second (Gbps) of
redundant bandwidth per logical connection.
eight links on a single logical connection,
for up to 20 Gigabits per Second (Gbps) of
redundant bandwidth per logical connection.
Powered by the ExtremeXOS, Summit X450a supports process recovery and application upgrades without the need for a
system reboot. Summit X450a provides the high network availability required for converged applications.
system reboot. Summit X450a provides the high network availability required for converged applications.
5027-02
• Processes are monitored
and can be restarted or
other action taken if
necessary
• Hitless failover
infrastructure for dual
management systems
and stacking
BGP
OSPF
SSH-2
V1.3.1
SSH-2
V1.3.2
Third
Party
Application
ExtremeXOS
Kernel
Kernel Loadable
Module
Memory protected
processes under
real-time
scheduling that
cannot impact
each other nor
kernel
1
Designed to allow
application
modules to be
upgraded during
runtime
3
Application
modules can be
added during
runtime
2
Figure 1: ExtremeXOS Modular Design
• Single management point for up to eight units
• High-speed 40 Gbps stacking
• Rapid Failover for converged applications
• Can mix Summit X250e, Summit X450 series
• High-speed 40 Gbps stacking
• Rapid Failover for converged applications
• Can mix Summit X250e, Summit X450 series
and Summit X650 series switches
5251-01
VIM1-SummitStack
VIM1-SummitStack
Figure 2: SummitStack Stacking Architecture
Voice-Grade Stacking with
SummitStack
SummitStack
The Summit X450a series offers dual
stacking interfaces to provide high-speed
40 Gbps stacking bandwidth. SummitStack
stacking architecture is designed to
support converged services such as VoIP
and video by its highly available, rapid
failover capability with n-1 master
redundancy, distributed Layer 2 and
Layer 3 switching, link aggregation across
the stack and distributed uplinks.
SummitStack supports up to eight units in
a stack, and the mixture of the units can
be Summit X250e, Summit X450e,
Summit X450a, Summit X480 and
Summit X650 switches. It provides
sub-second failover for path failure and
hitless master/backup failover along with
hitless protocol support such as OSPF
graceful restart and Network Login user
authentication. The Summit X450a
switch provides chassis-like management
and availability with its SummitStack
stacking technology (see Figure 2).
stacking interfaces to provide high-speed
40 Gbps stacking bandwidth. SummitStack
stacking architecture is designed to
support converged services such as VoIP
and video by its highly available, rapid
failover capability with n-1 master
redundancy, distributed Layer 2 and
Layer 3 switching, link aggregation across
the stack and distributed uplinks.
SummitStack supports up to eight units in
a stack, and the mixture of the units can
be Summit X250e, Summit X450e,
Summit X450a, Summit X480 and
Summit X650 switches. It provides
sub-second failover for path failure and
hitless master/backup failover along with
hitless protocol support such as OSPF
graceful restart and Network Login user
authentication. The Summit X450a
switch provides chassis-like management
and availability with its SummitStack
stacking technology (see Figure 2).