Product specifications

Dialogic® BorderNet™ 4000 SBC Product Description Document
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Network
Layer 1/2 and Layer 3 redundancy keeps network access to the BorderNet 4000 SBC highly
available and makes link failovers transparent to other nodes on the network.
• If the Primary Management link (Eth0) fails, the management IP addresses switch
over to the secondary link (Eth3). Management access is seamlessly available over
the secondary link with no traffic impact.
• If a Primary Session link (Eth4, Eth5, Eth6, Eth7) fails, the Session and Media IP
addresses switch over to the corresponding secondary link (Eth8, Eth9, Eth10,
Eth11). Signaling and media session traffic is seamlessly available over the
secondary link with no traffic impact.
• If the Primary HA link (Eth1) fails, the HA link IP addresses switch over to the
secondary HA link (Eth2). HA access is seamlessly available over the secondary link
with no traffic impact. If both HA links fail, the standby system takes over.
• In an HA deployment scenario, if both primary and secondary management links or
session links fail, the BorderNet 4000 SBC switches over to the standby platform.
The BorderNet 4000 SBC is seamlessly available to other nodes on the network with
no traffic impact.
Deployment
The BorderNet 4000 SBC can be deployed in Standalone mode or High Availability mode.
Standalone Mode
In Standalone mode, one BorderNet 4000 SBC is deployed. The redundancy capabilities in
Standalone mode achieve high reliability of the system in the event of hardware component
failures (fans, disk drives, or power supplies) or network interface failures. Software and
platform-level redundancy are not available in this mode.
High Availability Mode
In High Availability mode, two BorderNet 4000 SBCs are deployed in a 1+1 configuration.
This deployment achieves high availability and high reliability of the system in the event of
hardware component failures, network interface failures, platform-level failures, or dual
component failures, providing 99.999% (five 9’s) availability.
For High Availability deployment, two BorderNet 4000 SBC platforms are connected to each
other using direct Ethernet links (crossover cables) over redundant HA ports (Eth1 and
Eth2).
In the High Availability configuration, the paired BorderNet 4000 SBC platforms work in
Active-Standby mode. The Active BorderNet 4000 SBC handles the media and signaling
sessions; the Standby BorderNet 4000 SBC provides high availability and protects against
platform-level failures such as system reboots, power failures, dual network link failures,
software failures, software upgrades, or operator-initiated switch-overs.
All configuration data provisioned in the Active BorderNet 4000 SBC is mirrored and kept in
sync with the Standby BorderNet 4000 SBC. Existing call contexts (signaling and media
sessions) are also mirrored between Active and Standby platforms.
In the event of a platform switch-over, the Standby BorderNet 4000 seamlessly takes over
as the Active system and continues service to new and established sessions.* Platform
failovers are transparent to signaling and media traffic and the management network.
*Sessions involving H.323 legs are not preserved across platform switch-overs.