Product specifications

ISIS | 7500 Network Zone Configurations
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For the Foundry/Brocade based configurations, Avid has only tested VRRP-E. For the Cisco based configurations
HSRP and GLBP have been tested. For Cisco, Avid has found GLBP to be the best performer. However, GLBP is
not offered in all switch models and is not retested in every release; therefore, HSRP may be the only option.
Avid has only tested OSPF between the APN and House Uplink. It was found to provide the fastest repair time
when failures were introduced into the network. Recovery times vary depending on the type and size of your
network.
ISIS | 7500 Network Zone Configurations
All clients in the shared storage network are classified by zones, depending on how they connect to the network.
The following list defines the ISIS clients in each network layer by their zone classification. Zone terminology
does not apply other clients such as Interplay Central.
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A System Director must be attached to both subnets, but can only be attached once to each subnet.
• Zone 1 Client — Connected to ISIS VLANs via an ISS 1 Gb or 10 Gb port (direct connect)
• Zone 2 Client — Connected to ISIS VLANs via a 1 Gb or 10 Gb port on an Avid qualified layer-2 switch
(non-routed)
• Zone 3 Client — Connected to an Avid qualified layer-3 switch (routed) with known Quality of Service
(QoS); traffic routed to ISIS (one hop) and load-balanced across ISIS VLANs (approximately a 60/40 ratio)
• Zone 4 Client — Connected to the house network using a switch with unknown QoS; traffic routed to Avid
ISIS (measured by the number of hops) and load-balanced across ISIS VLANs (approximately a 60/40 ratio)
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Clients which can connect to one zone can run in any lower-numbered zone — for example, a Zone 3 client can
also run as a Zone 2 or Zone 1 client.
The following four examples show different types of Avid ISIS | 7500 configurations.
ISIS | 7500 Zone 1 Client Configuration (Direct Connect)
Any client that is connected directly to an ISIS is considered a Zone 1 or direct connected client. Each Integrated
Switch Blade (labeled ISS2000) has a total of eight, 1 Gb Ethernet ports and one 10 Gb Ethernet port. A single
Engine has the capacity to support 18 clients or servers, including any ports that are to be used by the System
Director(s). The total number of 1 Gb ports in Zone 1 is based on the number of Engines and System Directors in
the configuration.
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Connect TransferManagers and AirSpeed servers to Zone 1 or Zone 2.
A Zone 1 (direct connect) configuration consists of a group of clients connected directly to the 1-Gb and 10 Gb
connections of the ISS in the Engine. The System Director also connects to both subnets via both ISS modules
using a 1 Gb port.