Saturday, 8 December 2012

NBAR Restrictions

NBAR doesn't support the following:


  • Non-IP traffic
  • Multicast and other non-CEF switching modes
  • Asymmetric flows with stateful protocols
  • Packets that are originated from or that are destined to the router running NBAR
  • Pipelined persistent HTTP requests.
  • URL/host/MIME classification with secure HTTP.
  • MPLS labelled packets.
  • Fragmented packets
  • following interfaces:
    • Fast EtherChannel
    • Interfaces where tunnelling or encryption is used
  • ...


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