Cisco 3925 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 3925 Specifications

General

Product Type	Router
Form Factor	Rack-mountable
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Connectivity Technology	Wired
Power	AC 120/230 V (50/60 Hz)
Redundant Power Supply	Optional
Routing Protocol	OSPF, IS-IS, BGP, EIGRP, PIM
Network/Transport Protocol	IPSec
Remote Management Protocol	SNMP, Telnet, SSH, HTTP
Encryption Algorithm	DES, Triple DES, AES
Flash Memory	256 MB
Weight	11.5 kg
Interfaces	2 x SFP (mini-GBIC)
Power Source	Internal power supply
Authentication Method	RADIUS, TACACS+, LDAP
Compliant Standards	IEEE 802.1Q, IEEE 802.3af
Operating Temperature	0 to 40 °C
Operating Humidity	5% to 85% (non-condensing)
Dimensions (WxDxH)	44.5 x 47.2 x 8.9 cm