16-45
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
Attaching the Map Class
To attach the map class, perform the following configuration tasks:
•
Attaching a Map Class to a Frame Relay Interface or Subinterface, page 16-45
•
Attaching a Map Class to a Frame Relay DLCI, page 16-48
•
Attaching a Map Class to a Frame Relay Interface and a Service Policy to a Subinterface, page 16-50
Attaching a Map Class to a Frame Relay Interface or Subinterface
To attach a map class to a Frame Relay interface or subinterface, enter the following commands
beginning in global configuration mode:
Command
Purpose
Step 1
Router(config)#
interface serial
slot
/
module
/
port
.
T1#
:
channel
Creates or modifies a serial interface. Enters interface
configuration mode.
Step 2
Router(config-if)#
hold-queue
length
{
in
|
out
}
Limits the size of the IP output queue on an interface. We
recommend that you configure this command on all physical
interfaces.
length
is a number that specifies the maximum number of packets
in the queue. Valid values are from 0 to 4096. We recommend
4096 packets for all line cards, except the ATM OC-12 line card.
By default, the input queue is 75 packets and the output queue is
40 packets.
in
specifies the input queue.
out
specifies the output queue.
Step 3
Router(config-if)#
no ip address
Removes any existing IP address from the main interface.
Step 4
Router(config-if)#
no ip
directed-broadcast
Disables the translation of a directed broadcast to physical
broadcasts. Instead, the directed broadcasts are dropped.
Step 5
Router(config-if)#
encapsulation
frame-relay
[
ietf
|
cisco
]
Specifies Frame Relay as the interface encapsulation type.
(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.
Step 6
Router(config-if)#
frame-relay class
name
Associates a map class with the Frame Relay interface.
name
is the name of the map class.
Note
The router applies the service policy configured in the
map class to this main interface, any subinterfaces
configured on the main interface, and any DLCIs
configured on the subinterfaces.
