Product specifications
Qualified and Approved ISIS Switches
20
ISIS | 7500 External Switches
ISIS v2.4 introduced support for expanding the number of Engines in an ISIS | 7500 configuration from a
maximum of 12 Engines up to 24 Engines, by combining two ISIS stacks (referred to as Management Domains)
under one ISIS file system. When building an ISIS that is greater than 12 Engines, two External Expansion
Switches (EXS) are needed, one EXS per VLAN that interconnects each Management Domain.
The two stacks are interconnected via 10 Gb links (link aggregation) to the EXS switch. Each 10 Gb link can
provide 600 MB/s of bandwidth full duplex. This is the maximum bandwidth an ISS can support.
n
Up to eight EXS 10 Gb aggregated links (configured as two, four member aggregated links) are supported
between the switch and ISIS | 7500 Management Domain.
c
If you plan to utilize 600 MB/sec of bandwidth on the links to the EXS, do not use any 1 Gb connections as
uplinks; this will exceed per-switch bandwidth. Plan your client bandwidth allocation carefully to avoid
oversubscribing a segment of the network.
Each EXS is configured with 2 X 4 port groups of aggregated 10 Gb links. Each group connects to a VLAN on
one of the Management Domains. For the sample configurations the first 8 ports of the switch are used to build the
2 X 4 port groups. The following two switches are qualified as EXS.
• Dell Networking S4810: the interface ports are TenGigabitEthernet 0/0 through 0/7
• Cisco 4900M: the interface ports are TenGigabitEthernet 1/1 through 1/8
Each stack, regardless of the number of Engines, is configured into two subnets.
The following illustration shows the division, and the 10 Gb Link Aggregation used to link the two Management
Domains. You can connect the right and left VLANs to the Zone 2 switch using either the 10 Gb ports on the
Engine or EXS switch as shown as Option 1 and Option 2 (respectively) in the illustration.
Foundry/Brocade
FESX424 2XG
224 RJ-45
4 SFP (LC)
2 XFP (LC) 1 DB-9 serial Avid supports both SR (850
nm) and LR (1310 nm) XFPs in
10 Gb ports.
Optical 1 Gb SFP Ports 1F – 4F
can be used in place of RJ-45
Ports 1 – 4.
Model Rack Units 1 Gb Ports 10 Gb Ports Mgmt. Ports Comments