Avaya Configuring Traffic Filters and Protocol Prioritization Manual de usuario Pagina 24

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Configuring Traffic Filters and Protocol Prioritization
1-4
117348-A Rev. A
Filtering Strategies
This section recommends ways you might use traffic filters in a network. See
A
ppendix B for specific examples.
Direct Traffic
You can create traffic filters that affect a particular protocol’s traffic. For example,
you can forward all IP traffic to a next-hop address. You can also create traffic
filters that affect certain locations on a bridged network. For example, if you want
all traffic from a node with a particular source MAC address (perhaps an
application server) to take precedence over other traffic, you can use protocol
prioritization to assign a high priority to any traffic with that source address.
Drop or Accept Traffic
You can configure a router interface to accept only specified traffic and drop all
other packets by configuring inbound traffic filters with specific accept criteria.
Or, to accept most traffic and drop only specified packets, you can configure
inbound traffic filters for the traffic you want to drop.
For example, to prevent all NetBIOS traffic from entering a particular LAN
segment, you can create an inbound traffic filter to drop all packets with a
destination or source SAP code of F0.
Prioritize Traffic
You can use protocol prioritization to expedite traffic coming from a particular
source or going to a particular destination.
When a router treats all packets equally, there is no way to ensure consistent
network services for users who are working with real-time applications. Bulk
transfer applications use too much of the available bandwidth and reduce
interactive response time. These problems are especially noticeable on low-speed
WAN interfaces.
Note: Drop filters are generally more efficient than Accept filters.
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