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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter32 IPv6 Support on the Cisco ASR 901 Router
How to Configure IPv6 Support on the Cisco ASR 901 Router
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
router isis
area-tag
Example:
Router(config)# router isis area2
Enables IS-IS for the specified IS-IS routing process, and
enters router configuration mode.
• area-tag—Name for a routing process.
Step 4
net
network-entity-title
Example:
Router(config-router)# net
49.0001.0000.0000.000c.00
Configures an IS-IS network entity title (NET) for the
routing process.
• network-entity-title—The network-entity-title
argument defines the area addresses for the IS-IS area
and the system ID of the router.
Step 5
exit
Example:
Router(config-router)# exit
Exits router configuration mode and enters global
configuration mode.
Step 6
interface
type number
Example:
Router(config)# interface fastEthernet 0/0
Specifies an interface type and number, and places the
router in interface configuration mode.
Step 7
ipv6 address {
ipv6-address/prefix-length |
prefix-name sub-bits/prefix-length
}
Example:
Router(config-if)# ipv6 address 2001:DB8::3/64
Specifies the IPv6 network assigned to the interface and
enables IPv6 processing on the interface.
• ipv6-address—The IPv6 address to be used.
• prefix-length—The length of the IPv6 prefix. A decimal
value that indicates how many of the high-order
contiguous bits of the address comprise the prefix (the
network portion of the address). A slash mark must
precede the decimal value.
• prefix-name—A general prefix, which specifies the
leading bits of the network to be configured on the
interface.
• sub-bits—The subprefix bits and host bits of the address
to be concatenated with the prefixes provided by the
general prefix specified with the prefix-name argument.