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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 74 Configuring Flexible NetFlow
VSS Environment
9.
14,000 unique IPv6 addresses can be monitored.
10.
On a given target, one monitor per traffic type is allowed. However, you can configure multiple
monitors on the same target for different traffic types.
For example, the following configuration is allowed:
! vlan config 10
ip flow monitor <name> input
ipv6 flow monitor <name> input
!
The following configuration is not allowed:
!
interface GigabitEthernet 3/1
ip flow monitor m1 input
ip flow monitor m2 input
11.
On a given target monitoring Layer 2 and Layer 3, simultaneous traffic is not supported:
interface channel-group 1
datalink flow monitor m1 input
ip flow monitor m2 input
!
12.
Selection of Layer 2 and Layer 3 packet fields in a single flow record definition is not allowed.
However, ingress 802.1Q VLAN Id of packet and Layer 3 packet field selection is allowed.
13.
To attach a monitor to port or port-vlan targets, a flow record matching on ingress 802.1Q VLANId
key field, must match on input interface also as key field.
Note
The
match datalink dot1q vlan input
option is inavailable prior to IOS Release XE 3.3.0; you
would only see the
input
option starting with the IOS Release XE 3.3.0.
14.
Flow monitor matching on ingress 802.1Q VLANId as key field cannot be attached on a VNET trunk
port target.
15.
Only permanent and normal flow cache types are supported.
16.
Supervisor Engine 8-E, Supervisor Engine 7-E, Supervisor Engine 7L-E, and Catalyst 4500X do not
support:
–
predefined records like traditional routers (
record netflow ipv4 original-input
)
–
flow-based sampler.
17.
On VLAN interfaces, when you use the
interface
option with the
Cos
,
Tos
,
TTL
or
Packet length
options, the system displays inaccurate results for the interface input field.
18.
The VSS active and standby switches independently export flows, to the same or different Netflow
collectors depending on flow exporter configuration. An IP route to the Netflow collector must exist
and it is should be reachable from the VSS for flow export.
19.
At the collector, the flow sequence numbers are local to a switch and will be monotonically
increasing for each member of VSS. Additionally, the SourceId field of the v9 export packet
uniquely identifies the VSS switch number that it was exported from.
20.
The configuration of the flow exporter does not support the option
output features.
21.
Maximum number of VRFs that can be used for the flow exporter destination address configuration
in VSS is 5. This limit includes the Global Routing Table and is common across all flow exporters
in the VSS.
Summary of Contents for Catalyst 4500 Series
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