Configuring the SBC for ENUM Queries

Overview

The SBC sends ENUM queries and receive responses, using the Signaling Interface. The user can configure the Signaling Interface for sending ENUM queries and receive responses, using the packet interface port 988 to 1023. The packets from the Signaling Interface are prioritized over the packets from the Management Interface.

Configure the servers lwresdProfile type with the following options for ENUM queries:

• mgmt: For management interface (default).
• ip: For packet interface.
• signalingIp: For signaling interface using sipSigPort IP address.

The addressContext adds the staticRoute parameter for the ENUM server. Static routes are configured between the ENUM server and the signaling interface in order to provide a gateway to the destination ENUM server.

The SBC uses the Management Interface as default for handling ENUM queries. There are two ways to handle ENUM queries:

• Handling the ENUM Queries Using the Pkt Interface
• Handling the ENUM Queries Using the Management Interface
• Handling the ENUM Queries Using the Signaling Interface

Handling the ENUM Queries Using the Pkt Interface

To configure the SBC for sending the ENUM queries and receive responses using the Pkt Interface, perform the following steps:

1. Check Static Routes Currently Configured for an ENUM Server [optional].

   % show addressContext default staticRoute

   
   

   Example: IPv4 output

   staticRoute 10.54.78.21 32 10.54.24.1 LIG001 LIF1_v4 {
   preference 100;
   }
   

   Example: IPv6 output

   staticRoute fd00:10:6b50:44e0::15 60 fd00:10:6b50:4180::1 LIG001 LIF1_v4 {
   preference 100;
   }

2. Add a Static Route for an ENUM Server.

   Note:

   It is not necessary to add a Static Route for an ENUM server, if it is already configured and shown in the output of the command "show addressContext <addressContext_Name> staticRoute".

   For example, if the ENUM server IP 10.128.254.116 is already added as a static route, then the output of the "show addressContext default staticRoute" command displays the following information:

   staticRoute 10.128.254.116 32 10.54.4.1 LIG001 LIF1_v4 {

       preference 120;

   }

   
   

   For IPv4

    % set addressContext default staticRoute 10.128.254.116 32 10.54.4.1 LIG001 LIF1_v4 preference 120
   commit

   For IPv6

   % set addressContext DEFAULT staticRoute fd00:10:6b50:44e0::15 60 fd00:10:6b50:4180::1 LIG001 LIF1_v4 preference 177
   commit

3. Configure ENUM Domain Name.

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSType yes
   commit

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSBufferSize 517
   commit

4. Set LWRESD Profile type to 'ip.'

   % set global servers lwresdProfile DEFAULT type ip addressContext default ipInterfaceGroup LIG001 
   commit

   
   

   Example: Setting the eDnsGlobalBufferSize parameter

   set global servers lwresdProfile DEFAULT eDnsGlobalBufferSize 524
   commit

   Example: Setting the eDnsMonitorInterval parameter

   set global servers lwresdProfile DEFAULT eDnsMonitorInterval 66
   commit

5. View the LWRESD [optional].

   % show global servers lwresdProfile DEFAULT

   
   

   Example

      description DEFAULT;
      enumDomainNameLabel DEFAULT_ZONE_LABEL;
      enableLwresdLog disable;
      type mgmt;
      eDnsGlobalBufferSize 524;
      eDnsMonitorInterval 66;

   Note:

   The parameters addressContext and ipInterfaceGroup appears in the results of the command "show global servers lwresdProfile DEFAULT", only if the parameter lwresdProfile type is set to ip.

6. Add an ACL Rule.

   For IPv4

   % set addressContext default ipAccessControlList rule DNS1 precedence 9 ipInterfaceGroup LIG2 ipInterface LIF2_v4 sourceIpAddress 10.128.254.1 sourceAddressPrefixLength 24 state enabled
   commit

   For IPv6

   % set addressContext DEFAULT ipAccessControlList rule DNS1 precedence 11 ipInterfaceGroup LIG001 ipInterface LIF1_v4 sourceIpAddress fd00:10:6b50:4020::99 sourceAddressPrefixLength 60 state enabled
   commit

Handling the ENUM Queries Using the Management Interface

To configure the SBC for sending the ENUM queries and receive responses using the Management Interface, perform the following steps:

1. Delete the Existing Static Routes for an ENUM Server.

   Note:

   The SBC selects the interface based on priority of the static route configured for interface. To enable the Management Interface for handling ENUM queries, delete static routes configured for the ENUM server.

   
   

   For IPv4

   % delete addressContext default staticRoute 10.128.254.116 32 10.54.4.1 LIG001 LIF1_v4
   commit

   For IPv6

   % delete addressContext default staticRoute fd00:10:6b50:44e0::15 60 fd00:10:6b50:4180::1 LIG001 LIF1_v4
   commit

2. Configure ENUM Domain Name.

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSType yes
   commit

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSBufferSize 517
   commit

3. Set LWRESD Profile to 'mgmt.'

   % set global servers lwresdProfile DEFAULT type mgmt
   commit

   
   

   Example: Setting the eDnsGlobalBufferSize parameter

   set global servers lwresdProfile DEFAULT eDnsGlobalBufferSize 524
   commit

   
   

   Example: Setting the eDnsMonitorInterval parameter

   set global servers lwresdProfile DEFAULT eDnsMonitorInterval 66
   commit

4. View the Settings of lwresdProfile [optional].

   % show global servers lwresdProfile DEFAULT

   
   

   Example output

   description             DEFAULT;
   ENUMDomainNameLabel     DEFAULT_ZONE_LABEL;
   enableLwresdLog         disable;
   type                    mgmt;
   

5. Add an ACL Rule.

   For IPv4

   % set addressContext default ipAccessControlList rule DNS1 precedence 9 sourceIpAddress 10.54.92.180 sourceAddressPrefixLength 24 state enabled
   commit

   For IPv6

   % set addressContext DEFAULT ipAccessControlList rule DNS1 precedence 11 sourceIpAddress fd00:10:6b50:4020::99 sourceAddressPrefixLength 60 state enabled
   commit

Handling the ENUM Queries Using the Signaling Interface

To configure the SBC for sending the ENUM queries and receive responses using the Signaling Interface, perform the following steps:

1. Check Static Routes Currently Configured for an ENUM Server [optional].

   
   

   Example: Viewing the staticRoute for the ENUM server

   show addressContext DEFAULT staticRoute
   staticRoute 10.54.78.21 32 10.54.24.1 LIG1 LIF1_v4 {
   preference 100;
   }
   

2. Add a Static Route for an ENUM Server.

   Example of how to add a staticRoute for the ENUM server:

   Example

   set addressContext DEFAULT staticRoute 10.128.254.116 32 10.54.4.1 LIG1 LIF1_v4 preference 120

3. Configure ENUM Domain Name.

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSType yes
   commit

   set global servers enumDomainName somevaliddomain.com forwardersData 0 eDNSBufferSize 517
   commit

4. Set lwresdProfile to SignalingIp Parameter.

• • Example of how to set and configure the signalingIp parameter:

    set global servers lwresdProfile DEFAULT type signalingIp addressContext ADDR_CONTEXT_1 zone ZONE_IAD sipSigPort 1 ipInterfaceGroup LIG1

  • Example of how to set the eDnsGlobalBufferSize parameter:

    set global servers lwresdProfile DEFAULT eDnsGlobalBufferSize 524
    commit

  • Example of how to set the eDnsMonitorInterval parameter:

    set global servers lwresdProfile DEFAULT eDnsMonitorInterval 66
    commit

ENUM ARS Profile

The Address Reachability Service (ARS) profile applies to ENUM servers when attached to the LWRESD profile, and provides device failover to the secondary or backup server. The servers lwresdProfile configuration adds the enumArsProfileId parameter.

The ENUM ARS profile is applicable to the following interfaces to handle the ENUM queries:

• mgmt: For management interface (default).
• ip: For packet interface.
• signalingIp: For signaling interface using sipSigPort IP address.

Configure the enumArsProfileId in the enumArsProfile parameter, which is added to the global servers configuration and determines the behavior of the blacklisting and whitelisting parameters.

To check if an ENUM server is reachable or not, you must whitelist or blacklist the ENUM ARS Profile.

• Example: How to attach the enumArsProfileId to the lwresdProfile:

  Example

  set global servers lwresdProfile DEFAULT enumArsProfileId Test

• Example: How to configure the enumArsProfile for black listing:

  Example

  set global servers enumArsProfile Test blackListing numberOfFailures 5 duration 60

• Example: How to configure the enumArsProfile for white listing:

  Example

  set global servers enumArsProfile Test whiteListing numberOfResponses 1 pingInterval 5 highWaterMarkTimer 86000