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Adjusting Quality of Service for Commvault Network Traffic on Clients

Applies to: Windows and UNIX clients

If you have clients where the Commvault software competes with other applications for bandwidth, you can adjust the Quality of Service (QoS) of the Commvault network traffic by setting the appropriate Differentiated Services Code Point (DSCP) value on clients or client computer groups. The network routers will classify the Commvault data packets based on the DSCP value that you configured. By default, Commvault uses DSCP value 0 (best effort).

QoS is the quality of data transmission in the Internet (or intranet). The goal of QoS is to efficiently use the network by providing higher quality transmission to certain subsets of data.

DSCP is a computer networking architecture that manages network traffic and provides QoS on IP networks.

The operation of setting DSCP values on Commvault data packets is known as QoS packet marking in the networking industry. The transmission quality of the Commvault data is determined based on the DSCP value that you set.

Before You Begin

To adjust the QoS on multiple clients, add the clients to a client computer group, and then set the DSCP value on the client computer group. For information on creating client computer groups, see Creating a Client Computer Group.

Procedure

  • To the client or client computer group, add the qosDscp additional setting as shown in the following table.

    For instructions on adding the additional setting from the CommCell Console, see Adding or Modifying Additional Settings from the CommCell Console.

    Property

    Value

    Name

    qosDscp

    Category

    Session

    Type

    INTEGER

    Value

    Enter the appropriate DSCP value. Valid values are 0 to 64.

    The following table provides sample DSCP values for each precedence level:

     

     

    Precedence Level

    Description

    DSCP Value for qosDscp

    Example

    CS0

    Best effort for unclassified traffic (This is the default value)

    0

     

    CS1

    Class 1

    8

    YouTube, Gaming applications, P2P

    CS2

    Class 2

    16

    SNMP protocols, SSH protocols, System Logs

    CS3

    Class 3

    24

    SCCP, SIP, H.323

    CS4

    Class 4

    32

    TelePresence

    CS5

    Express Forwarding (EF)

    40

    Cisco IPVS

    CS6

    Traffic stays the same (used for IP routing protocols)

    48

    EIGRP,OSPF,HSRP,IKE

    CS7

    Traffic stays the same (link layer and routing protocol keep alive)

    56

     

     

     

Last modified: 6/13/2019 8:42:17 PM