Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 17 Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs
Configuration Tasks
Configuring Encapsulation
When traffic crosses a WAN link, the connection needs a Layer 2 protocol to encapsulate traffic. To set
the encapsulation method, use the following commands:
Verifying Encapsulation
Use the show interfaces serial command to verify encapsulation on the interface:
Router# show interfaces serial 2/0/1
Serial2/0/1 is up, line protocol is up
Hardware is SPA-4T3E3
MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,
reliability 255/255, txload 223/255, rxload 222/255
Encapsulation FRAME-RELAY, crc 16, loopback not set
Keepalive set (10 sec)
LMI enq sent 13076, LMI stat recvd 13076, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/256, broadcasts sent/dropped 0/0, interface broadcasts 0
Last input 00:00:04, output 00:00:04, output hang never
Last clearing of "show interface" counters 1d12h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 38579000 bits/sec, 109611 packets/sec
5 minute output rate 38671000 bits/sec, 109852 packets/sec
14374551065 packets input, 632486376132 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 parity
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
14408526130 packets output, 633974757440 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
Command Purpose
Router# configure terminal Enters global configuration mode.
Router(config)# interface serial slot/subslot/port Selects the interface to configure and enters
interface configuration mode.
• slot/subslot/port—Specifies the location of the
interface. See the
“Specifying the Interface
Address on a SPA” section on page 17-5.
Router(config-if)# encapsulation
encapsulation-type {hdlc | ppp | frame-relay}
Sets the encapsulation type on the interface:
• hdlc—High-Level Data Link Control (HDLC)
protocol for serial interface. This
encapsulation method provides the
synchronous framing and error detection
functions of HDLC without windowing or
retransmission. This is the default for
synchronous serial interfaces.
• ppp—PPP (for serial interface).
• frame-relay—Frame Relay (for serial
interface).

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English