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Configuration Examples

308620-14.00 Rev 00

B-3

The sequence of events in this network is as follows:

When the router activates, it connects to the bandwidth broker. The bandwidth

broker automatically installs the trigger filter (F1) on the router.

The remote video client establishes a TCP connection to the video server and

requests the video data.

The video server begins sending the data to the client. The first packet that the

server sends reaches the BLN router. The router matches the packet to the

trigger filter criteria and then sends a trigger filter event message to the

bandwidth broker. This event message includes the first packet sent by the

video server.

After the bandwidth broker receives the trigger packet, it installs the flow

filter (F2) on the BLN router.

The router looks at each packet that it receives and marks the video packets

according to the configuration of the flow filter (F2).

When the core devices in the network receive the marked packets, they look at

the DS field, interpret the marked packet, and give the video data priority over

other data, sending the data to the remote video client.

Table B-1. Filters on the BLN Router

Criteria

Trigger Filter

(F1)

Flow Filter

(F2)

IP source address 192.32.46.8 192.32.46.8

IP destination address 192.32.6.0 -- 192.32.6.255 192.32.6.14

TCP source port 4000 4000

TCP destination port unspecified 59862

Police action trigger 2 MB/s

Idle time N/A 2 minutes

Mark N/A 01000000

Note:

Prior to the router receiving the flow filter, some of the initial packets

sent by the video server are not marked; they are simply sent on a best-effort

basis. However, these initial packets are often control packets and not actual

data.

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Avaya Configuring Differentiated Services Manual do Utilizador Página 77