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Cisco iWAN Versus NetScaler SD-WAN
Criteria Cisco iWAN NetScaler SD-WAN NetScaler SD-WAN Advantage
Device-managed approach provides faster failover.
Device-managed
Failover Methodology Routing table changes Secondary performance-based routing tables take time to
Seamless to application
converge
Packet-based path selection is more efficient and provides a
Path Selection By application By packet
better user experience
Path Measurement & Recovery Cisco technical guidance results in failover times of 5-6s only
Seconds to minutes Milliseconds
Speed for a limited set of apps, and 30s for the rest
No. Assymetric routing Applications are not symmetric, same as broadband. So
Unidirectional selection Yes
is not supported measurement and selection shouldn’t be symmetrical
Requires DM-VPN to be Dual-ended QoS is a reqruiement for reliable application
Dual-ended QoS Yes
enabled delivery over Internet-based connections
Bandwidth bonding ensures efficient bandwidth usage while
Bandwidth Bonding No. Assigns apps to links Yes
dynamic mapping can result in path flapping
NetScaler SD-WAN can ensure lossless deliver for VoIP or
Packet Duplication No Yes
other mission critical applications
Depends on which Only VWaaS approaches the NetScaler SD-WAN performance.
Data compression & Reduction Yes
variation of WaaS VWaaS requires a separate UCS compute blade
Depends on which NetScaler SD-WAN supports a much broader set of protocols,
Protocol Acceleration Yes
variation of WaaS with industry leading HDX acceleration
Cisco requires configuration of a routing overlay
Configuration complexity High Simple
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