Cisco 2921 User Manual

113
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Configuring Backup Data Lines and Remote Management
Configuring Dial Backup and Remote Management Through the Console Port or Auxiliary Port
Example
The following configuration example specifies an IP address for the ATM interface through PPP and
IP Control Protocol (IPCP) address negotiation and specifies dial backup over the console port.
!
ip name-server 192.168.28.12
ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool 1
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
!
! Need to use your own correct ISP phone number.
modemcap entry MY-USER_MODEM:MSC=&F1S0=1
chat-script Dialout ABORT ERROR ABORT BUSY ““ “AT” OK “ATDT 5555102\T”
TIMEOUT 45 CONNECT \c
!
!
!
!
interface vlan 1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip tcp adjust-mss 1452
hold-queue 100 out
!
! Dial backup and remote management physical interface.
interface Async1
no ip address
encapsulation ppp
dialer in-band
dialer pool-member 3
async default routing
async dynamic routing
async mode dedicated
ppp authentication pap callin
!
interface ATM0
mtu 1492
no ip address
no atm ilmi-keepalive
pvc 0/35
pppoe-client dial-pool-number 1
Step 17
line [aux | console | tty | vty] line-number
[ending-line-number]
Example:
Router(config)# line aux 0
Router(config)#
Enters configuration mode for the
auxiliary interface.
Step 18
flowcontrol {none | software [lock] [in | out] | hardware
[in | out]}
Example:
Router(config)# flowcontrol hardware
Router(config)#
Enables hardware signal flow control.
Command Purpose

Cisco 2921 Specifications

General

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, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
Product color	Black
Rack capacity	2U
USB version	2.0
RS-232 ports	1
USB ports quantity	2
Ethernet LAN (RJ-45) ports	3
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
Firewall security	Cisco IOS
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 %
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	469.9 mm
Width	438.2 mm
Height	88.9 mm
Weight	13200 g