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Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide
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Chapter4 Configuring with the Command-Line I nterface
Configuring QoS Attributes
Step 5 Configure the cable length.
Router(config-controller)# cablelength feet
Note Although you can specify a cable length from 0 to 450 feet, the hardware only recognizes
two ranges: 0 to 49 and 50 to 450. For example, ent ering 35 feet uses the 0 to 49 range. If
you later change the cable length to 40 feet, there is no change because 40 is within the 0 to
49 range. However, if you change the cable length to 50, the 50 to 450 range is used. The
actual number you enter is stored in the configuration file.
Step 6 Exit controller configuration mode.
Router(config-controller)# exit
Step 7 Configure the serial interface. Specify the E1 slot (always 0), port number, and channel group.
Router(config)# interface serial slot/port:0
Step 8 Assign an IP address and subnet mask to the interface. If the interface is a member of a Multilink bundle
(MLPPP), then skip this step.
Router(config-if)# ip address ip_address subnet_mask
Step 9 Before you can enable RTP header compression, you must have configured a serial line that uses PPP
encapsulation. Enter the following command to configure PPP encapsulation .
Router(config-if)# encapsulation ppp
Step 10 Set the carrier delay for the serial interface.
Router(config-if)# carrier-delay number
Step 11 Return to Step 1 to configure the second port on the VWIC and the ports on any additional VWICs.
Step 12 Exit to global configuration mode .
Router(config-if)# exit
Configuring QoS Attributes
To use QoS on the MWR 1900 router, you must first create a class map. The class map de fines the
criteria that a packet must match to be placed in that class. Once you have created a class map, the router
can recognize packets that are subject to QoS. You must then tell the router the action to take on those
packets by creating a policy map.Once you have completed th e creation of a QoS boilerplate, you can
assign it to an interface.
Note The QoS functionality of the MWR 1900 route r is built on the same code as the Cisco 10000 ESR
(with some exceptions). For more information ab out the QoS feature, see “Configuring Quality of
Service” (http://www.cisco.com/univercd/cc/td/doc/product/aggr/10000/10ksw/qosos.htm) and the
“Cisco 10000 Series ESR Quality of Service” feature module
(http://www.cisco.com/univercd/cc/td/doc/product/aggr/10000/10kfm/fm_qos. htm), as well as the
“Cisco IOS Quality of Service Solutions Configuration Guide” and the “Cisco IOS Quality of
Service Solutions Command Reference.”