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functions of the route processor are never affected during times of high traffic. Further, this setup leaves the route-
processor CPU free to perform vital operations such as route convergence at the greatest possible speed.
Unplanned downtime resulting from a hardware or software service outage can also be mitigated. Using the field-
proven Cisco Nonstop Forwarding with Stateful Switchover (NSF/SSO) technology, the Cisco ASR 1000 Series
Router can respond to any software-related outage by providing fault containment and dynamic restartability with
zero packet loss. Unique among routers in this class, the Cisco ASR 1000 Series Router can run dual copies of the
Cisco IOS XE Software on a single route processor, switching to the recovery software image instantaneously upon
detection of an outage. For larger enterprise customers who want even further levels of resiliency, the Cisco ASR
1006 Router supports redundant hardware routing and forwarding processors, also capable of zero packet loss
during a service outage. (Zero packet loss is based upon route-processor failure. For forwarding-processor failure,
minimal packet loss may occur for packets in transit at the time of the failover.)
As more businesses move toward 24-hour operations, finding a maintenance window to perform software upgrades
becomes increasingly challenging. In addition to unplanned downtime, the Cisco ASR 1000 Series Routers can also
account for these incidents of planned downtime through their industry-leading In Service Software Upgrade (ISSU)
function. ISSU permits the complete upgrade of the operating system while the router is actively passing traffic. As
with NSF/SSO, you can perform the upgrade operation in a hitless manner--with zero packet loss throughout the
procedure. Thus, you can enable new features and functions while business operations remain uninterrupted.
As enterprises expand into a global market, network downtime--whether planned or unplanned--has become a
business- and revenue-affecting event. The Cisco ASR 1000 Series Routers are architected with state-of-the-art
resiliency to help ensure that mission-critical business functions are always available.
Cisco ASR 1000 Series Routers Quick Fact Sheet
Table 1 compares the Cisco ASR 1000 Series chassis and gives router specifications.
Table 1. Cisco ASR 1000 Series: Chassis Comparison and Product Specifications
Cisco ASR 1002 Cisco ASR 1004 Cisco ASR 1006
Chassis
Size: 2 rack units (2RU)
DC power (maximum): 590W
AC power (maximum): 560W
Scalable to 10 Gbps
Software failover
Size: 4RU
DC power (maximum): 1020W
AC power (maximum): 960W
Scalable to 40 Gbps
Software failover
Size: 6RU
DC power (maximum): 1700W
AC power (maximum): 1600W
Scalable to 40 Gbps
Hardware failover
Forwarding
cards
One 5-Gbps Cisco ASR 1000 Series ESP
(ESP5)
(part number ASR1000-ESP5) or one 10-
Gbps Cisco ASR 1000 Series ESP (ESP10)
(part number ASR1000-ESP10) or one 10-
Gbps Cisco ASR 1000 Series non crypto ESP
(ESP10-N) ( part number ASR1000-ESP10-N)
4–8 millions of packets per second (Mpps)
5-Gbps forwarding
One Cisco ASR 1000 Series ESP10
(ASR1000-ESP10)
or
one Cisco ASR 1000 Series non crypto
ESP (ASR1000-ESP10-N)
or
One Cisco ASR 1000 Series ESP20
(ASR1000-ESP-20)
16 Mpps
20-Gbps forwarding
One or two Cisco ASR 1000 Series
ESP10s (ASR1000-ESP10)
or
one Cisco ASR 1000 Series non crypto
ESP (ASR1000-ESP10-N)
or
One or two Cisco ASR 1000 Series
ESP20s (ASR1000-ESP20)
1 + 1 redundancy
16 Mpps
20-Gbps forwarding