Managing Logical Interfaces

 

The Logical Interfaces section configures IP addresses (both IPv4 and IPv6) for the Ethernet ports and VLANs. Detailed description of the IP addresses for each of the

platforms is given below. To configure the physical layer settings and VLANs for the Ethernet ports, go to Ports.

About Logical Interfaces - Sonus SBC 1000

The 

 supports three system created logical interfaces (known as Ethernet 1 IP,  Ethernet 2 IP, and Ethernet 3 IP) used to hold the IP addresses of the Ethernet ports 1, 2, and 3 respectively. In addition to the system created logical interfaces, the also supports user created VLAN logical interfaces. VLAN logical interfaces are created each time a VLAN is added to the system. See About Logical Interfaces - VLAN Interfaces.

Ethernet IP

When delivered from the factory, Ethernet 1 IP is enabled with DHCP by default, and an IPv4 address is acquired via a connected DHCP server. This IP address is used for performing Initial Setup on the SBC 1000. See Running Initial Setup for more information.

The default IP address for the logical interface named Ethernet 2 IP is 192.168.129.2. After initial configuration, you may configure this logical interface using Settings or Tasks tabs in the WebUI.

After initial configuration, a third logical interface named Ethernet 3 IP can be configured via Settings or Tasks tabs in the WebUI.

The IP addresses configured on the three logical interfaces and the VLAN interfaces are used for transporting all the VOIP media packets (e.g., RTP, SRTP) and all protocol packets (e.g., SIP, RTCP, TLS). DNS servers of the customer's network should map the

system hostname to the configured IP addresses. The hostname or these IP addresses may be used by UC-enabling systems such as SIP-phones, IP-PBX and Microsoft Lync Servers and for accessing WebUI.

About Logical Interfaces - Sonus SBC 2000

The

supports five system created logical interfaces (known as Administrative IP, Ethernet 1 IP, Ethernet 2 IP, Ethernet 3 IP, and Ethernet 4 IP) used to hold the IP addresses of the Admin port and each of the four Ethernet ports (see Sonus SBC 2000 Front Panel). In addition to the system created logical interfaces, the Sonus SBC 2000 also supports user-created VLAN logical interfaces. VLAN logical interfaces are created each time a VLAN is added to the system, and are further described in the About Logical Interfaces - VLAN Interfaces.

Administrative IP

The 

system defines a logical interface called the Admin IP (Administrative IP, also known as the Management IP). This logical interface is used to hold the IP address of the Admin Ethernet port . A secondary IP address may be configured for this logical interface. The primary IP address is a factory-default IP address of 192.168.128.2/24 and it is used for running Initial Setup of the  system.

Ethernet IP

The 

system has one predefined logical interface for each of the four Ethernet ports. In most deployments, one of these logical interfaces (typically Ethernet 1 IP) and its assigned IP address is used for transporting all the VOIP media packets (e.g., RTP, SRTP) and all protocol packets (e.g., SIP, RTCP, TLS). DNS servers of the customer's network should map the  system hostname to this IP address. The hostname or these IP addresses may be used by UC-enabling systems such as SIP-phones, IP-PBX and Microsoft Lync Servers and for accessing the WebUI.

By default, each of the four Ethernet ports is set up to use its matching logical interface (e.g. Port Ethernet X uses Ethernet X IP) for IP layer communication, but this can be changed by configuring the VLAN settings on the Ethernet port.

When delivered from the factory, Ethernet 1 IP is enabled with DHCP by default, and an IPv4 IP address is acquired via a connected DHCP server. This IP address is used for performing Initial Setup on the

. See Running Initial Setup more information. The default IP address for the logical interface named Ethernet 2 IP is 192.168.129.2. After initial configuration, you may configure this logical interface using Settings or Tasks tabs in the WebUI.

About Logical Interfaces - SBC SWe Lite

The

supports five system created logical interfaces (known as Administrative IP, Ethernet 1 IP, Ethernet 2 IP, Ethernet 3 IP, and Ethernet 4 IP). In addition to the system created logical interfaces, the Sonus SBC SWe supports user-created VLAN logical sub-interfaces.

Administrative IP

The 

system supports a logical interface called the Admin IP (Administrative IP, also known as the Management IP). A Static IP or DHCP is used for running Initial Setup of the  system.

Ethernet IP

The 

system has four logical interfaces. In most deployments, one of these logical interfaces (typically Ethernet 1 IP) is assigned an IP address used for transporting all the VOIP media packets (e.g., RTP, SRTP) and all protocol packets (e.g., SIP, RTCP, TLS). DNS servers of the customer's network should map the  system hostname to this IP address. The hostname or these IP addresses may be used by UC-enabling systems such as SIP-phones, IP-PBX and Microsoft Lync Servers and for accessing the WebUI.

In the default software, Ethernet 1 IP is enabled and an IPv4 IP address is acquired via a connected DHCP server. This IP address is used for performing Initial Setup on the

. See Running Initial Setup for more information. The default IP address for the logical interface named Ethernet 2 IP is 192.168.129.2. After initial configuration, you may configure this logical interface using Settings or Tasks tabs in the WebUI.

About Logical Interfaces - VLAN interfaces

SBC Edge 1000-2000

As described in the Managing VLANs - SBC Edge 1000-2000 section, each time a VLAN is created, a matching Logical Interface is also automatically created. This Logical Interface allows you to configure an IP address and have IP layer access for this VLAN. The configured IP address can be accessed through any Ethernet port that is associated with the given VLAN. VLAN Logical Interfaces behave the same as any other Logical Interface, and can be used for transporting VOIP media packets (e.g. RTP, SRTP), protocol packets (e.g. SIP, RTCP, TLS), and/or dynamic routing.

SBC SWe Lite

VLAN sub-interfaces allow the separation of either management traffic between the service provider and the customer, or to keep media traffic from multiple sources separate (that need to exist on the same SWe Lite instance). For example, a service provider could use a VLAN to manage a SWe Lite at a customer premise, while also having a management interface for the customer; the service provider and the customer would be on the same physical network, but have separate logical interfaces.

When a VLAN sub-interface is configured, any IP traffic that uses that sub-interface will be VLAN tagged with the configured value.

VLAN sub-interfaces behave the same as any other Logical Interface, and are used for transporting VOIP media packets (e.g. RTP, SRTP), protocol packets (e.g. SIP, RTCP, TLS), and/or dynamic routing.

Configuration for each VLAN sub-interface is identical to the main interfaces (except the VLAN value is used to specify the interface as a sub-interface).

For configuring VLAN sub-interfaces, refer to Managing VLANs - SBC SWe Lite.

About Logical Interfaces - IPv4 and IPv6 Support

Logical interfaces support three modes of addressing: IPv4, IPv6, and Both (IPv4/IPv6). By default, Logical Interfaces are in IPv4 mode. When the Logical Interface is set for IPv4 mode, a Primary and Secondary IP address can be created. For IPv6, one primary IP Address can be statically configured.

For specific IPv4 and IPv6 configuration, see Configuring and Modifying Logical Interfaces.

IPv6 to IPv4 - Example

In this example, the LAN uses IPv6, and the WAN uses IPv4. The

is responsible for interworking SIP calls between the two networks. The DNS server is provided by the ISP and the NETP server is provided locally.

 

IPv6 to IPv6 - Example

In this example, both the LAN and the WAN use IPv6. The SBC is responsible for serving as a back-to-back user agent between the two call legs. The DNS server and NTP server are both on the WAN.

 

IPv4 to IPv6 - Example

In this example, the LAN uses IPv4 and the WAN uses IPv6. Just as in the IPv6-to-IPv4 case, the SBC is responsible for protocol interworking between the two call legs. The DNS server and the NTP server are both on the LAN.

 

Managing Logical Interfaces

The example below is shown for SBC 2000.

1. In the WebUI, click the Settings tab.

2. In the left navigation pane, go to Node Interfaces > Logical Interfaces.

   Logical Interfaces - SBC 2000 Example

    

To view an interface's properties:

1. Click the pop-up icon () next to the entry you want to view.
2. When you are finished, close the window.

 

Logical Interfaces and Redundant Ethernet Pairs

If the logical interface is part of a redundant ethernet pair, several of the options on the secondary logical interface will become read-only.