Adaptec 2940U - AHA Storage Controller Ultra SCSI 20 MBps Información técnica descargar pdf (Pagina 156)

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5. Assign the priority list to an interface. This step applies to serial ports, so the

command refers to the serial interface (s0). To assign priority 1 to the interface

s0, from the Router#(config) prompt, type:

int s0

priority-group 1

To determine if the changes have taken effect, use the show interface (s0) or

the show queuing command.

Custom Queuing

Custom Queuing provides the ability to set up 16 different queues that act in a

round robin format. This is similar to division multiplexing. The router scans

process packets through all of the sequences in a round robin format. You set the

byte length for a specific queue so that multiple packets from the same protocol

are transmitted as opposed to one packet of another protocol. This is considered a

better alternative than Priority Queuing. Similar to token ring, everyone gets a

chance to transmit data. Only some protocols can transmit more data than the rest.

The steps required to set up Custom Queuing are as follows:

1. At the Router # command prompt, type config terminal. This places the

system in configuration mode.

2. Set custom queuing filters for protocols or interfaces. At the Router#(config)

prompt, type:

queue-list 1 protocol ip high tcp 1494

This configures queue list 1 for the IP protocol and the TCP port 1494, which

is what ICA uses to initiate a session.

3. Assign a default queue. This specifies the default queue for all unnamed

protocols and ports that are not explicitly defined. At the Router#(config)

prompt, type:

queue-list 1 default 2

4. Change queue capacity. This step is optional. See the Cisco documentation for

additional information.

5. Configure the transfer rate per queue. This sets the byte count for a particular

queue. This allows multiple packets to be sent for one queue while sending one

packet for another queue. At the Router#(config) prompt type:

queue-list 1 queue 1 byte-count 4500

Queue 1 in queue-list 1 has a byte-count of 4500, which is three times that of a

regular Ethernet packet, thereby sending three packets of this queue-list

member as opposed to one packet of the default queue.

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