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Simple Filters Overview

Simple filters are recommended for metropolitan Ethernet applications. They are supported on Gigabit Ethernet intelligent queuing 2 (IQ2) and Enhanced Queuing Dense Port Concentrator (DPC) interfaces only.

Unlike normal filters, simple filters are for IPv4 traffic only and have the following restrictions:

  • The next term action is not supported.

  • Qualifiers, such as the except and protocol-except statements, are not supported.

  • Noncontiguous masks are not supported.

  • Multiple source addresses and destination addresses in a single term are not supported. If you configure multiple addresses, only the last one is used.

  • Ranges are only valid as source or destination ports. For example, source-port 400-500 or destination-port 600-700.

  • Output filters are not supported. You can apply a simple filter to ingress traffic only.

  • Simple filters are not supported for interfaces in an aggregated-Ethernet bundle.

  • Explicitly configurable terminating actions, such as accept, reject, and discard, are not supported. Simple filters always accept packets.

    Note:

    On the MX Series routers with the Enhanced Queuing DPC, the forwarding class is not supported as a from match condition.

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