Cabling the NAB to Network IPS sensors at 100Mb/s

Technote (FAQ)


Question

What are the guidelines for cabling the Network Active Bypass (NAB) to the Network IPS at 100Mb/s?

Answer

Here are three basic scenarios to cable the NAB to the Network IPS with speed/duplex options.

Scenario 1:

  • Set interfaces (firewall, switch, NAB, and IPS) to hard coded at 100Mb/s FD (full duplex).
  • Connect firewall to NAB (N1) using a crossover cable
  • Connect switch to NAB (N2) using a straight cable
  • Connect NAB (A1 and A2) to IPS appliance using crossover cables for both interfaces
Note: both sides of the connection need to be hardcoded. Choosing to wrong cable type would fail to link.

Scenario 2:
  • Set network environment (N1 and N2) to hard coded at 100Mb/s FD
  • Set NAB to IPS (A1 and A2) as auto-negotiate
  • Connect firewall to NAB (N1) using a crossover cable
  • Connect switch to NAB (N2) using a straight cable
  • Connect NAB (A1 and A2) to IPS appliance using any cable type (straight or crossover)

Note: auto-negotiation allows auto-MDIX correction

Scenario 3:
  • Set all interfaces to auto-detect
  • Connect interfaces using any cable type

Note: auto-MDIX detection corrects potential errors




Cross reference information
Segment Product Component Platform Version Edition
Security IBM Security Network Intrusion Prevention System Documentation Firmware 1.8, 2.5, 3.3, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.6.1, 4.6.2

Document information


More support for:

IBM Security Network Active Bypass
Documentation

Software version:

1.0, 3.0

Operating system(s):

Firmware

Reference #:

1567902

Modified date:

2011-10-24

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