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© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 15 of 18
Q. Which version of NetFlow exporters is supported?
A. Only NetFlow Version 9 is supported for NetFlow exporter using the export-protocol command option.
Q. How many NetFlow-Lite flows are supported on the Cisco Catalyst 2960-X Series?
A. 16K NetFlow-Lite flows are supported on a stack of Cisco Catalyst 2960-X Series Switches.
Q. Is egress flow monitor supported on the Cisco Catalyst 2960-X Series?
A. No, only ingress flow monitors are supported on the Cisco Catalyst 2960-X Series.
Q. Can the flow monitors be attached to logical interfaces on the Cisco Catalyst 2960-X Series?
A. The flow monitors can be attached to physical interfaces and VLAN interfaces (SVI) on the Cisco Catalyst
2960-X Series. The flow monitor can’t be attached to logical interfaces such as EtherChannel or Layer 2
VLANs.
Q. If flow monitors are attached on both the physical port and VLAN interface, which one will take precedence in
the Cisco Catalyst 2960-X Series?
A. The interface VLAN monitor will overwrite the port monitor for the traffic coming on the port in the Cisco
Catalyst 2960-X Series.
Q. Can we have NetFlow-Lite monitor attached without sampling?
A. No, only sampled NetFlow-Lite monitors can be attached on the Cisco Catalyst 2960-X Series.
Q. What sampling modes are supported on the Cisco Catalyst 2960-X Series?
A. Two sampling modes are supported on the Cisco Catalyst 2960-X Series:
●
Deterministic sampler is dedicated to single attachment. It always makes sure the correct number of flows
is sampled on the attached port. Every attachment with same deterministic sampler uses one free sampler
available in the hardware.
●
Random sampler is shared among all the attached interfaces. Only the first attachment uses a new
sampler; subsequent attachments of the same sampler on different interfaces share the same hardware
sampler.
Q. How many different NetFlow-Lite samplers are supported by the hardware in the Cisco Catalyst 2960-X
Series?
A. The Cisco Catalyst 2960-X Series supports four different NetFlow-Lite samplers in the hardware.
Q. Can we have deterministic sampler attached on more than four interfaces on the Cisco Catalyst 2960-X
Series?
A. No. Because each deterministic sampler attachment uses up one free hardware sampler, a deterministic
sampler can’t be attached to more than four interfaces. It is recommended to use random sampler if the flows
needs to be monitored on more than four ports.
PoE Support (IEEE 802.3af and 802.3at)
Q. Do the Cisco Catalyst 2960-X Series PoE switches support the IEEE 802.3af or 802.3.at standards?
A. Both standards are supported; that is, the Cisco Catalyst 2960-X Series PoE switches can detect and support
802.3af and 802.3at powered devices.