Cisco ASR 1000 Series Software Configuration Guide

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:
PurposeCommand
Enters global configuration mode.Router# configure terminal
Selects the interface to configure and enters interface
configuration mode.
Router(config)# interface serial slot /subslot /port
Sets the encapsulation type on the interface.
• hdlc—High-Level Data Link Control (HDLC)
protocol for serial interface. This is the default.
• ppp—Point-to-Point Protocol (PPP) (for serial
interface).
• frame-relay—Frame Relay (for serial interface).
Router(config-if)# encapsulation encapsulation-type
{hdlc | ppp | frame-relay}
Verifying Encapsulation
Use the show interfaces serial command to display the encapsulation method:
Router# show interfaces serial3/1/1
Serial3/1/1 is up, line protocol is down
Hardware is SPA-4XT-SERIAL
MTU 1500 bytes, BW 2016 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY, crc 16, loopback not set
Keepalive set (10 sec)
LMI enq sent 13698, LMI stat recvd 0, LMI upd recvd 0, DTE LMI down
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
Last input never, output 00:00:05, output hang never
Last clearing of show interface counters 1d14h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
19344 packets output, 254168 bytes, 0 underruns
0 output errors, 0 collisions, 2283 interface resets
0 output buffer failures, 0 output buffers swapped out
4566 carrier transitions
RTS up, CTS up, DTR up, DCD up, DSR up
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
286 OL-14127-17
Configuring the 4-Port Serial Interface SPA
Optional Configurations

Cisco ASR 1000 Series Specifications

General

Brand	Cisco
Model	ASR 1000 Series
Category	Network Router
Language	English