Alcatel-Lucent 6850-48 Guida Di Riferimento

QoS Commands

OmniSwitch CLI Reference Guide

page 52-19

Enables or disables the automatic prioritization of NMS traffic—SSH (TCP Port 22), Telnet (TCP Port 
23), WebView (HTTP Port 80) and SNMP (UDP port 161)—that is destined for the switch. Prioritization 
maximizes access for NMS traffic and helps to reduce the potential for DoS attacks.

N/A

By default, NMS traffic prioritization is enabled.

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Use the no form of this command to disable automatic prioritization of NMS traffic.

• The NMS traffic from the first eight active IP interfaces is prioritized; any such traffic from additional 

interfaces is not prioritized.

• The precedence of an active IP interface is determined by the value of the SNMP interface index (ifin-

dex), which was assigned to the interface when it was created. The lower the ifindex value the higher 
the precedence; the higher the ifindex value the lower the precedence. Note that the precedence is only 
determined for active IP interfaces.

• To change the precedence of an IP interface, use the ip interface ifindex command and specify a 

higher (lower precedence) or lower (higher precedence) ifindex value.

• When automatic NMS prioritization is enabled, QoS policies that specify priority are not applied to the 

NMS traffic. Other QoS policies, however, are applied to this type of traffic as usual. If a policy speci-
fies rate limiting, then the policy with the lowest rate limiting value is applied.

-> qos nms priority

-> qos no nms priority

Release 6.3.1; command was introduced.