IXIA BreakingPoint Storm, Installation Manual

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Bandwidth Questions
FireStorm ONE Installation Guide 42 BreakingPoint Systems Inc. ©2005-2015
Question:
Why would I want to use one MAC address for all hosts?
Answer: A device has limited memory dedicated to its ARP table. If it takes too long for the ARP
table to populate, the device may run out of buffer packets for that host and drop packets. So, you
will want to use the “Virtual Router” option when using more addresses than the device’s ARP
table is capable of handling. Otherwise, entries will be dropped before they need to be used.
Question: Can NAT be used across multiple test components?
Answer:
No. Only one test component can use a domain that has NAT enabled. Any domain that
has NAT enabled cannot be shared between test components.
Question:
How many subnets can I add to a domain?
Answer: The number of subnets that can be added depends on the type of subnet you are defining.
Each domain can contain one non-VLAN subnet; each additional subnet must have a VLAN ID
assigned to it. So, theoretically, the limit is 4,095 because you can assign VLAN IDs from 1-4,095.
Question: How do I assign one IP address per subnet?
Answer:
If you edit the Network Neighborhood selected for your test, you can disable the
Use
Address Range
option and enter in the single IP address you want to use in the
Minimum
Range
field.
Question:
What type of Network Address Translation (NAT) is supported?
Answer: Source NAT, also known as Traditional NAT, Outbound NAT, or Unidirectional NAT.
Question: Do you support Destination NAT?
Answer:
No.
Question:
Can I send and receive traffic on the same interface?
Answer: Yes. You can send and receive traffic on the same interface if you assign the interface a
domain that has VLAN-tagging enabled.
Bandwidth Questions
Question: How do I define the maximum throughput for each test interface?
Answer: The maximum throughput is defined using the Data Rate parameters. This parameter is
defined per test component, and it is the upper-bound rate for each interface, which means that the
interface will never send more traffic than the value specified. For the session-based components,
you can define the scope of the data rate, which enables you to set the maximum data rate per
interface, or set the aggregate data rate for the entire test component.
Question: What is the maximum throughput for each interface?
Answer: The maximum throughput is determined by the link speed of the device connected to the
appliance.
Question: How do I determine how much bandwidth each test component is using?
Answer: The system has a test status verification feature that tells you whether or not the test
components have exceeded the maximum allowed bandwidth for each interface.