Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 262

remote port monitoring, Reserved L2 VLAN, Source session, Restrictions

Page 262 highlights

• The member port of the reserved VLAN must have the MTU and IPMTU value as MAX+4 (to hold the VLAN tag parameter). • To associate with source session, the reserved VLAN can have a maximum of four member ports. • To associate with destination session, the reserved VLAN can have multiple member ports. • The reserved VLAN cannot have untagged ports. Reserved L2 VLAN • MAC address learning in the reserved VLAN is automatically disabled. • There is no restriction on the VLAN IDs used for the reserved remote monitoring VLAN. Valid VLAN IDs are from 2 to 4093. The default VLAN ID is not supported. • In monitored traffic, packets that have the same destination MAC address as an intermediate or destination device in the path used by the reserved VLAN to transport the mirrored traffic are dropped by the device that receives the traffic if the device has a L3 VLAN configured. Source session • Configure physical ports and port-channels as sources in remote port monitoring and use them in the same source session. You can use both L2 (configured with the switchport command) and L3 ports as source ports. Optionally configure one or more source VLANs to configure the VLAN traffic to be monitored on source ports. • Use the default VLAN and native VLANs as a source VLAN. • You cannot configure the dedicated VLAN used to transport mirrored traffic as a source VLAN. Restrictions • When you use a source VLAN, enable flow-based monitoring (flow-based enable). • In a source VLAN, only received (rx) traffic is monitored. • You cannot configure a source port-channel or source VLAN in a source session if the port-channel or VLAN has a member port configured as a destination port in a remote port monitoring session. • You cannot use a destination port for remote port monitoring as a source port, including the session the port functions as the destination port. • The reserved VLAN used to transport mirrored traffic must be a L2 VLAN - L3 VLANs are not supported. Configure remote port monitoring Remote port monitoring requires a source interface (monitored ports on different source network devices) and a reserved tagged VLAN for transporting mirrored traffic (configured on the source, intermediate, and destination devices). 1 Create a remote monitoring session in CONFIGURATION mode. monitor session session-id type rspan-source 2 Enter the source to monitor traffic in MONITOR-SESSION mode. source interface interface-range direction 3 Enter the destination to send the traffic to in MONITOR-SESSION mode. destination remote-vlan vlan-id 4 Enable the monitoring interface in MONITOR-SESSION mode. no shut Create remote monitoring session OS10(config)# monitor session 10 type rspan-source OS10(conf-mon-rspan-source-10)# Configure source and destination port, and traffic direction OS10(conf-mon-rspan-source-10)# source interface vlan 10 rx OS10(conf-mon-rspan-source-10)# destination remote-vlan 100 OS10(conf-mon-rspan-source-10)# no shut 262 Layer 2

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The member port of the reserved VLAN must have the MTU and IPMTU value as MAX+4 (to hold the VLAN tag parameter).
To associate with source session, the reserved VLAN can have a maximum of four member ports.
To associate with destination session, the reserved VLAN can have multiple member ports.
The reserved VLAN cannot have untagged ports.
Reserved L2 VLAN
MAC address learning in the reserved VLAN is automatically disabled.
There is no restriction on the VLAN IDs used for the reserved remote monitoring VLAN. Valid VLAN IDs are from 2 to 4093. The default
VLAN ID is not supported.
In monitored
traffic,
packets that have the same destination MAC address as an intermediate or destination device in the path used by
the reserved VLAN to transport the mirrored
traffic
are dropped by the device that receives the
traffic
if the device has a L3 VLAN
configured.
Source session
Configure
physical ports and port-channels as sources in remote port monitoring and use them in the same source session. You can use
both L2
(configured
with the
switchport
command) and L3 ports as source ports. Optionally
configure
one or more source VLANs
to
configure
the VLAN
traffic
to be monitored on source ports.
Use the default VLAN and native VLANs as a source VLAN.
You cannot
configure
the dedicated VLAN used to transport mirrored
traffic
as a source VLAN.
Restrictions
When you use a source VLAN, enable
flow-based
monitoring (
flow-based enable
).
In a source VLAN, only received (
rx
)
traffic
is monitored.
You cannot
configure
a source port-channel or source VLAN in a source session if the port-channel or VLAN has a member port
configured
as a destination port in a remote port monitoring session.
You cannot use a destination port for remote port monitoring as a source port, including the session the port functions as the
destination port.
The reserved VLAN used to transport mirrored
traffic
must be a L2 VLAN — L3 VLANs are not supported.
Configure
remote port monitoring
Remote port monitoring requires a source interface (monitored ports on
different
source network devices) and a reserved tagged VLAN for
transporting mirrored
traffic
(configured
on the source, intermediate, and destination devices).
1
Create a remote monitoring session in CONFIGURATION mode.
monitor session
session-id
type rspan-source
2
Enter the source to monitor
traffic
in MONITOR-SESSION mode.
source interface
interface-range
direction
3
Enter the destination to send the
traffic
to in MONITOR-SESSION mode.
destination remote-vlan
vlan-id
4
Enable the monitoring interface in MONITOR-SESSION mode.
no shut
Create remote monitoring session
OS10(config)# monitor session 10 type rspan-source
OS10(conf-mon-rspan-source-10)#
Configure
source and destination port, and
traffic
direction
OS10(conf-mon-rspan-source-10)# source interface vlan 10 rx
OS10(conf-mon-rspan-source-10)# destination remote-vlan 100
OS10(conf-mon-rspan-source-10)# no shut
262
Layer 2