Cisco 1941 User Manual

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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 Backup Interfaces
Configuring Gigabit Ethernet Failover Media
Cisco 2921, Cisco 2951, and Cisco 3900 Series routers provide a Gigabit Ethernet (GE)
small-form-factor pluggable (SFP) port that supports copper and fiber concurrent connections. Media
can be configured for failover redundancy when the network goes down.
Note Do not connect back-to-back Cisco 2921, Cisco 2951, or Cisco 3900 Series routers with failover or as
auto-detect configured. This is not a supported configuration and the behavior is unpredictable.
Assigning Primary and Secondary Failover Media
To assign primary and secondary failover media on the GE-SFP port, follow these steps, beginning in
EXEC mode.
SUMMARY STEPS
1. configure terminal
2. interface gigabitethernet slot/port
3. media-type sfp
4. media-type sfp auto-failover
5. end
DETAILED STEPS
Command Purpose
Step 1
configure terminal
Example:
Router> enable
Router# configure terminal
Router(config)#
Enters global configuration mode, when using
the console port.
Use the following commands to connect to the
router with a remote terminal:
telnet router name or address
Login: login id
Password: *********
Router> enable
Step 2
interface gigabitethernet slot/port
Example:
Router(config)# interface gigabitethernet 0/1
Router(config-if)#
Enters interface configuration mode.

Cisco 1941 Specifications

General

Product Type	Router
Product Series	1900
Model	1941
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Flash Memory	256 MB
Power Supply	Internal power supply
Power	AC 120/230 V (50/60 Hz)
Operating System	Cisco IOS
Product Name	Cisco 1941
Form Factor	Rack-mountable
Network/Transport Protocol	IPSec, L2TP, PPPoE, PPPoA
Remote Management Protocol	SNMP, Telnet, SSH, HTTP, HTTPS
Features	Firewall protection, VPN support, VLAN support
Interfaces	2 x 10/100/1000Base-T Ethernet WAN, 2 x USB 2.0
Expansion Slots	2 x EHWIC 1 x ISM slot
Wireless LAN	No
RAM	512 MB (installed) / 768 MB (max)