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CLI-based Configuration Guide - IP Service

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.
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Example for Configuring the SIP Call Bandwidth Limit on a NAT Device

Example for Configuring the SIP Call Bandwidth Limit on a NAT Device

Networking Requirements

As shown in Figure 5-22, the Router functions as the NAT gateway to connect to the enterprise internal network and Internet. Multiple SIP phones on the enterprise internal network often call the SIP phone, UserA, on the Internet. For example, multiple users on the enterprise internal network often hold call conferences with the SIP phone on the Internet. The voice configurations of the SIP phones and NAT configuration of the Router are complete, and enterprise internal users can call the user on the Internet. The NAT device has limited bandwidth, so the SIP call bandwidth limit needs to be configured on the NAT device to reject the SIP calls that exceed the configured bandwidth limit.

Figure 5-22  Configuring the SIP call bandwidth limit on a NAT device

Configuration Roadmap

The configuration roadmap is as follows:

Enable CAC and set the total bandwidth to limit the bandwidth of SIP calls.

Procedure

  1. Enable CAC on the Router and set the total bandwidth of the Router to 2000 Kbps.

    <Huawei> system-view
    [Huawei] sysname Router
    [Router] nat sip cac enable bandwidth 2000
    [Router] quit
    

  2. Verify the configuration.

    # Run the display nat sip cac bandwidth information verbose command on the Router to check detailed information about the configured total bandwidth and occupied bandwidth.

    <Router> display nat sip cac bandwidth information verbose
    ------------------------------------------------------------------------------- 
    Total Bandwidth(Kbps)       Used Bandwidth(Kbps)                                
      2000                        1900                                                 
    ------------------------------------------------------------------------------- 
    Src-IP          Src-Port Dest-IP         Dest-Port Protocol Used Bandwidth(Kbps)
    192.168.0.2     50       3.3.3.3         5060      udp        600
    192.168.0.3     50       3.3.3.3         5060      udp        700
    192.168.0.4     50       3.3.3.3         5060      udp        600
    -------------------------------------------------------------------------------

    # User 1, User 2, and User 3 in the enterprise's intranet can concurrently have a conference call with User A on the Internet (the bandwidth does not exceed 2000 Kbps). If the total bandwidth of the users who attempt to access the conference exceeds 2000 Kbps, the call fails.

Configuration Files

Configuration file of the Router

#
 sysname Router
#                                                                               
nat sip cac enable bandwidth 2000                                                  
#                                                                               
return  
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Updated: 2019-05-20

Document ID: EDOC1100034231

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