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Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide
78-13983-04
Chapter 4 Configuring with the Command-Line Interface
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, entering 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 defines 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 the creation of a QoS boilerplate, you can
assign it to an interface.
Note The QoS functionality of the MWR 1900 router is built on the same code as the Cisco 10000 ESR
(with some exceptions). For more information about 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.”