Name: Cisco 2901
Brand: Cisco
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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide

Chapter Configuring Ethernet CFM and Y.1731 Performance Monitoring on Layer 3 Interfaces

Configuring a Network Interface Device on the L3 Interface

Step 2 configure terminal

Step 3 interface gigabitethernet slot/port

Step 4 port-tagging

Step 5 encapsulation dot1q vlan-id

Step 6 set cos cos-value

Step 7 end

DETAILED STEPS

Configuration Example

This configuration example shows how to configure the NID:

Command Purpose

Step 1

enable

Example:

Router>enable

Enables the privileged EXEC mode.

Enter your password when prompted.

Step 2

configure terminal

Example:

Router#configure terminal

Enters the global configuration mode.

Step 3

interface gigabitethernet slot/port

Example:

Router(config)#interface

gigabitethernet 0/2

Specifies an interface and enters the interface

configuration mode.

Step 4

port-tagging

Example:

Router(config-if)#port-tagging

Inserts the VLAN ID into a packet header to identify

which Virtual Local Area Network (VLAN) the packet

belongs to.

Step 5

encapsulation dot1q vlan-id

Example:

Router(config-if-port-tagging)#encaps

ulation dot1q 10

Defines the encapsulation format as IEEE 802.1Q

(dot1q), and specifies the VLAN identifier.

Step 6

set cos cos-value

Example:

Router(config-if-port-tagging)#set

cos 6

Sets the Layer 2 class of service (CoS) value to an

outgoing packet end.

Step 7

end

Example:

Router(config-if-port-tagging)#end

Exits the interface configuration mode.

Questions and Answers:

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Cisco 2901 Specifications

General

Operating altitude	0 - 3000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 85 %
Ethernet LAN	Yes
Cabling technology	10/100/1000BASE-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
Ethernet LAN (RJ-45) ports	2
Firewall security	Cisco IOS
Input current	1.5 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	40 W
Product color	Black
Rack capacity	1U
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Flash memory	256 MB
Internal memory	512 MB
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1