Cisco Catalyst 6880-X Specifications download pdf (Page 101)

Core Layer April 2014

Step 12: Configure a synchronized clock by programming network devices to synchronize to a local NTP server

in the network. The local NTP server typically references a more accurate clock feed from an outside source.

Configure console messages, logs, and debug output to provide time stamps on output, which allows cross-

referencing of events in a network.

ntp server 10.4.48.17

ntp update-calendar

clock timezone PST -8

clock summer-time PDT recurring

service timestamps debug datetime msec localtime

service timestamps log datetime msec localtime

Procedure 3 Configure the core switch global settings and IP unicast routing

Step 1: Configure the in-band management interface.

The loopback interface for Cisco Layer 3 devices is a logical interface that is always reachable as long as the

device is powered on and any IP interface is reachable to the network. Layer 3 process and features are also

bound to the loopback interface to ensure resiliency of the processes. The loopback address is commonly a

host address with a 32-bit address mask and has been allocated out of the core network address range. This

example includes the ip pim sparse-mode command that will be explained further in Procedure 4.

interface loopback 0

ip address [ip address] 255.255.255.255

ip pim sparse-mode

Step 2: Configure the system processes to use the loopback interface address for optimal resiliency.

snmp-server trap-source Loopback 0

ip ssh source-interface Loopback 0

ip pim register-source Loopback0

ip tacacs source-interface Loopback0

ntp source Loopback0

Step 3: Configure IP unicast routing and neighbor authentication.

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Cisco Catalyst 6880-X Specifications Page 101