Ingress Port Rate Limiting; Default Settings - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Ingress Port Rate Limiting

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Switch 2(config-pmap)# exit
Switch 2(config)#
Repeat
Step 3
Ingress Port Rate Limiting
A port rate limiting feature helps control the bandwidth for individual Fibre Channel ports. Port rate
limiting is also referred to as ingress rate limiting because it controls ingress traffic into a Fibre Channel
port. The feature controls traffic flow by limiting the number of frames that are transmitted out of the
exit point on the MAC. Port rate limiting works on all Fibre Channel ports. The rate limit ranges from 1
to 100% and the default is 100%.
Port rate limiting can only be configured on Cisco MDS 9100 Series switches, Cisco MDS 9216i
Note
switches, and MPS-14/2 modules.
This feature can only be configured if the QoS feature is enabled and if this configuration is performed
on a Cisco MDS 9100 series switch, Cisco MDS 9216i switch, or MPS-14/2 module.
To configure the port rate limiting value, follow these steps.
Command
Step 1
switch # config t
switch(config)#
Step 2
switch(config)# interface fc 1/1
Step 3
switch(config-if)# switchport ingress-rate 50
switch(config-if)# no switchport ingress-rate 50

Default Settings

Table 56-3
.
Table 56-3
Parameters
FCC protocol
QoS control traffic
QoS data traffic
Zone-based QoS priority
Rate limit
Cisco MDS 9000 Family CLI Configuration Guide
56-14
Step 1 through Step 2 on Switch 1 to address return path congestion at both switches.
lists the default settings for FCC, QoS, and rate limiting features.
Default FCC, QoS, and Rate Limiting Settings
Chapter 56 Configuring Fabric Congestion Control and QoS
Purpose
Enters the configuration mode.
Selects the interface to specify the ingress
port rate limit.
Configures a 50% port rate limit for the
selected interface.
Reverts a previously configured rate to the
factory default of 100%.
Default
Disabled.
Enabled.
Disabled.
Low.
100%.
OL-16184-01, Cisco MDS SAN-OS Release 3.x