Brocade BigIron RX Series Configuration Guide - Manual (Page 228)

150 BigIron RX Series Configuration Guide
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Modifying port priority (QoS)
6
Modifying port priority (QoS)
You can give preference to the inbound traffic on specific ports by changing the Quality of Service
(QoS) level on those ports. For information and procedures, refer to
Chapter 18, “Configuring
Quality of Service” .
Assigning a mirror port and monitor ports
You can monitor traffic on Brocade ports by configuring another port to “mirror” the traffic on the
ports you want to monitor. By attaching a protocol analyzer to the mirror port, you can observe the
traffic on the monitored ports.
Monitoring traffic on a port is a two-step process:
• Enable a port to act as the mirror port. This is the port to which you connect your protocol
analyzer.
• Enable monitoring on the ports you want to monitor.
You can monitor input traffic, output traffic, or both.
On a 4 X 10G module, any port can operate as a mirror port and you can configure more than one
mirror port. You can configure up to 64 mirror ports. You can configure the mirror ports on
different modules and you can configure more than one mirror port on the same module.
Each mirror port can have its own set of monitored ports. For example, you can configure ports 1/1
and 5/1 as mirror ports, and monitor ports 1/2 – 1/8 on port 1/1 and ports 5/2 – 5/8 on port
5/1. The mirror port and monitored ports also can be on different slots.
However, on a 24 X 1G module, you can configure only one mirror port per packet processor
(PPCR). For example, if you configure port 3/1 to be mirrored by port 5/1, all other ports that you
want to be mirrored must use 5/1 as the mirror port. The following table shows which ports share
the same PPCR.
Configuration guidelines for monitoring traffic
Use the following considerations when configuring mirroring for inbound and outbound traffic:
• Any port can be mirrored and monitored except for the management port.
• There can be only one mirror port per packet processor on a 24 X 1G module.
• For outbound traffic, there can be up to 8 active mirror ports system wide.
Configuring port mirroring and monitoring
You can configure multiple mirror ports on the same module. However, if you mirror inbound traffic
to any of the mirror ports on the module, the traffic is mirrored to all the mirror ports on the
module. If you plan to mirror outbound traffic only, you can use multiple mirror ports on the same
module without the traffic being duplicated on the other mirror ports on the module.
Port numbers PPCR
1 – 12 1
13 – 24 2