Reference Guide

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C 10.1.1.0/24 via 10.1.1.1 vlan100 0/0 01:16:56
B EX 10.1.2.0/24 via 10.1.2.1 vlan101 20/0 01:16:56
O 10.1.3.0/24 via 10.1.3.1 vlan102 110/2 01:16:56
B IN 10.1.4.0/24 via 10.1.4.1 vlan103 200/0 01:16:56
Supported Releases 10.2.0E or later
IPv6 routing
OS10 supports IPv6 routing and addressing, including the Neighbor Discovery protocol, stateless IPv6 address autoconguration, and
stateful IPv6 address conguration.
Congure IPv6 routing for IP hosts to communicate with one another in the same network, or in dierent networks.
Stateless autoconguration
When an OS10 switch boots up, it automatically sends ICMPv6 requests for an IPv6 network prex to IPv6 devices on local links. When a
prex is received, a switch interface autocongures a unique link-local IPv6 address with the FE80::/10 prex and an interface ID generated
from the MAC address or a private random number.
NOTE: In OS10, only the Management port supports stateless autoconguration as a
host.
Stateless autoconguration allows a switch interface connected to an IPv6 network to autocongure a link-local address and communicate
with other IPv6 devices on local links. A DHCP server is not required for automatic IPv6 interface conguration. IPv6 devices on a local link
send Router advertisement (RA) messages in response to a switch's solicitation messages at startup.
Stateless autoconguration of IPv6 addresses is performed using:
Prex
Advertisement
Routers use router advertisement messages to announce the network prex. Hosts append their interface-
identier MAC address to generate a valid IPv6 address.
Duplicate Address
Detection (DAD)
An IPv6 host node device checks whether that address is used anywhere on the network using this mechanism
before conguring its IPv6 address.
Prex Renumbering Transparent renumbering of hosts in the network when an organization changes its service provider.
MOVE to DHCP topic As an alternative to stateless autoconguration, network hosts can obtain their IPv6 addresses using DHCP servers
via stateful autoconguration.
IPv6 provides the exibility to add prexes on router advertisements (RA) to advertise responses to router solicitations (RS). RA response
messages are sent when an RS message is received by default. The system manipulation of IPv6 stateless autoconguration supports the
router side only. Neighbor discovery (ND) messages advertise so the neighbor can use this information to auto-congure its address.
Received ND messages are not used to create an IPv6 address.
Inconsistencies in router advertisement values between routers are logged. The values checked for consistency include:
• Current hop limit
• M and O ags
• Reachable time
• Retransmission timer
• MTU options
• Preferred and valid lifetime values for the same prex
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Layer 3