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D-SBC Cluster

In a Distributed SBC configuration, each component scales independently in its own cluster depending upon call needs and the overall implemented traffic model.

  • S-SBC cluster – The Signaling component is scaled based on the traffic requirements.
  • M-SBC cluster – Media-based traffic such as video calls require instantiating more instances in the media cluster.
  • T-SBC cluster – The Transcoding-based traffic model require instantiating more instances in the transcoding cluster.

 

The S-SBC cluster instances discover the server instances using standard DNS resolution of policing and DSP services that are provided by the respective M-SBC and T-SBC cluster.

Command Syntax

% set system dsbc cluster
	type <dsp, mrf, policer>

Command Parameter

D-SBC Cluster Type DSP Parameters

Parameter
Description
type

Use this parameter to configure the D-SBC cluster profile types.

  • dsp
  • mrf
  • policer

See D-SBC Cluster Type section below for configuration details.

D-SBC Cluster Type

The SBC supports the following cluster profiles to resolve inter-cluster FQDN port communication for the M-SBC and T-SBC nodes involving instances communicating with other clusters:

  • Policer—The D-SBC uses the Policer cluster of type M-SBC to provide policing services that include DoS/DDoS protection, Topology Hiding [IPv4, IPv6, IPv4/IPv6 inter-working], Media Rate limiting, VLAN Tagging, Far end NA(P)T Learning, RTP Inactivity detection, SRTP Relay, ACLs and Micro Flows.
  • DSP—The D-SBC uses the Signaling IP address of the T-SBC hosting the DSP to provide services that include Transcoding/tone detection, Secured transport connection (crypto) like SRTP (Media), RTCP generation, FMTD detection, Legal Interception, Recording and Transcoding, Transrating or Tran-sizing flows.
  • MRF—The D-SBC uses the MRF cluster to user a third-party platform (MRF) to transcode audio and relay video/T.140. The MRF cluster is configured in a private SBC network and uses RFC-4117 interface to communicate with S-SBC.
 

DSP Profile

The D-SBC uses the Signaling IP address of the T-SBC hosting the DSP to provide services that include Transcoding/tone detection, Secured transport connection (crypto) like SRTP (Media), RTCP generation, FMTD detection, Legal Interception, Recording and Transcoding, Trans-rating or Tran-sizing flows.

Command Syntax

% set system dsbc cluster type dsp
	dnsGroup <DNS group name> 
	fqdn <FQDN: 1-63>
	state <disabled | enabled> 

 

Command Parameters

D-SBC Cluster Type DSP Parameters

Parameter
Description
dnsGroup<dnsGroup name> – The default DNS Server Group for this zone.
fqdn<FQDN value> – The FQDN value to associate with this dsp profile.
state

The administrative state of this D-SBC cluster.

  • disabled (default)
  • enabled
 

Media Resource Function Profile

The page Invoke MRF as a Transcoder for D-SBC was not found  -- Please check/update the page name used in the MultiExcerpt-Include macro

The page Invoke MRF as a Transcoder for D-SBC was not found  -- Please check/update the page name used in the MultiExcerpt-Include macro

For additional feature functionality details, refer to Invoke MRF as a Transcoder for D-SBC.

The CLI syntax, parameter descriptions and command examples for configuring a MRF profile on a S-SBC is provided below.

Note

Use the global callRemoteMediaStatus and callResourceDetailStatus commands to see when MRF is used for transcoding a call (resType = "dresMrf").

 

Command Syntax

% set system dsbc cluster type mrf
    mrfFqdn <domanin name>
	mrfIpAddress <IP address>
	mrfPort <0-65535>
	mrfRequestUri <Request URI>
	mrfRoutingType <IpAddress | fqdn>
	mrfTgName <trunking group name>
	mrfTransportType <TCP| TLS| UDP>
	state <disabled | enabled> 

 

Command Parameters

Note

The MRF server is configured as either FQDN or IP address based on the mrfRoutingType setting.

D-SBC Cluster Type MRF Parameters

Parameter

Length/Range

Parameter Description

Mandatory /
Optional
mrfFqdn1-63

<domain name> – The domain name of the MRF server.

When mrfRoutingType = fqdn, configure the DNS Group on the zone in which mrfTgName exists.

M
mrfIpAddressN/A

<IP address> – One or more IP addresses of the MRF server. When mrfRoutingType = ipAddress, a minimum of one IP address must be configured. If more than one IP address is entered, separate each IP address by a comma (,). The SBC supports a maximum of four IP addresses.

M
mrfPort0-65535

<port number> – The port number of the MRF server. The default value is based on the mrRoutingType setting. (Default = 5060)

  • When the mrfRoutingType is fqdn, mrfPort default value is "0". In this case, you must configure the desired port in the DNS server for the SRV record.
  • When the mrfRoutingType is IpAddress, mrfPort .
O
mrfRequestUri1-63<request uri> – Request URI sent in an Invite towards MRF server.M
mrfRoutingTypeN/A

The routing type used to send invites towards MRF server.

  • fqdn (default)
  • IpAddress
O
mrfTgName1-24<TG name> – The Trunk Group name used for MRF signaling.M
mrfTransportTypeN/A

The transport type used to communicate to the MRF server.

  • TCP
  • TLS
  • UDP (default)
O
stateN/A

The admin state of the MRF cluster.

  • disabled (default)
  • enabled
M

Policer Profile

The D-SBC uses the policer cluster of type M-SBC to provide policing services that include DoS/DDoS Protection, Topology Hiding (IPv4, IPv6, IPv4/IPv6 inter-working), Media Rate Limiting, VLAN Tagging, Far End NA(P)T Learning, RTP Inactivity Detection, SRTP Relay, ACLs and Micro Flows. 

Note

This cluster configuration is applicable only to the S-Node, and helps it identify the seed node of the M-Cluster with a FQDN. The DNS Group configuration tells which DNS Group to use to resolve the specified FQDN.

 

Command Syntax

% set system dsbc cluster type policer
	dnsGroup <DNS group name> 
	fqdn <FQDN: 1-63>
	state <disabled | enabled>


Command Parameters

D-SBC Cluster Type Policer Parameters

Parameter
Description
dnsGroup<dnsGroup name> – The default DNS Server Group for this zone.
fqdn<FQDN value> – The FQDN value to associate with this policer profile.
state

The administrative state of this D-SBC cluster.

  • disabled (default)
  • enabled

Command Examples

To configure a DSP cluster profile:

set system dsbc cluster type dsp dnsGroup SWeDNS fqdn tsbc.tcluster.com state enabled
commit

 

To configure an MRF as IP address:

set system dsbc cluster type mrf mrfRoutingType IpAddress mrfPort 5060 mrfIpAddress 10.54.1.1 mrfTgName SBX_55461_IMS_TG mrfRequestUri MRF-SERVER mrfTransportType UDP state enabled
commit

 

To configure an MRF as fqdn:

set system dsbc cluster type mrf mrfRoutingType fqdn mrfPort 5060 mrffqdn sonusnet.com mrfTgName SBX_55461_IMS_TG mrfRequestUri MRF-SERVER mrfTransportType UDP state enabled 
commit