Cisco 10000 Series User Manual

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Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 16 Fragmenting and Interleaving Real-Time and Nonreal-Time Packets
FRF.12 Fragmentation
Configuration Example for Attaching a Map Class to a Frame Relay Interface and a Service Policy to a DLCI
Example 16-12 shows how to attach a map class with fragmentation enabled to a Frame Relay interface
and attach a service policy to a DLCI. In the example, fragmentation is enabled in the map class named
lfi_map_class and the fragment size is set at 300 bytes. The map class is applied to the serial
interface
5/0/0/1:0, which has two subinterfaces configured. DLCI 17 is configured on
subinterface
5/0/0/1:0.1 and DLCI 18 is configured on subinterface 5/0/0/1:0.2. Because the map class
with fragmentation enabled is applied to the main interface, all of the traffic on the main interface, the
two subinterfaces, and the DLCIs is fragmented. However, because the service policy is applied directly
on DLCI 17 and DLCI 18, only the traffic on those DLCIs is subject to the QoS actions defined in the
service policy.
Step 8
Router(config-subif)# ip address address
mask
Specifies the IP address and subnet mask assigned to the
subinterface.
address is the IP address.
mask is the subnet mask for the associated IP address.
Step 9
Router(config-subif)# no ip
directed-broadcast
Disables the translation of a directed broadcast to physical
broadcasts. Instead, the directed broadcasts are dropped.
Step 10
Router(config-subif)# service-policy
{input | output} policy-map-name
Attaches the policy map you specify to the subinterface.
input indicates to apply the service policy to the traffic on the
inbound interface.
output indicates to apply the service policy to the traffic on the
outbound interface.
Note For QoS policies containing the bandwidth, priority,
random-detect, queue-limit, and shape commands, you
must specify the output keyword. The router ignores
these commands when you use them with the input
keyword.
policy-map-name is the name of the policy map.
Step 11
Router(config-subif)# frame-relay
interface-dlci dlci [ietf | cisco]
Assigns a data-link connection identifier (DLCI) to the Frame
Relay subinterface. Enters Frame Relay DLCI configuration
mode.
dlci is a number that identifies the data-link connection on the
interface or subinterface.
(Optional) ietf sets the encapsulation method to comply with the
Internet Engineering Task Force (IETF) standard (RFC 1490).
Use this keyword when connecting to another vendor’s equipment
across a Frame Relay network.
(Optional) cisco indicates to use Cisco’s own encapsulation,
which is a 4-byte header, with 2 bytes to identify the data-link
connection identifier (DLCI) and 2 bytes to identify the packet
type. This is the default encapsulation type.
Command Purpose

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English