Ipv6 Routing - Allied Telesis SwitchBlade x908 Series Software Reference Manual

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On the host
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IPv6 Routing

Routing in IPv6 is almost identical to IPv4 routing under CIDR, except that the addresses are
128-bit IPv6 addresses instead of 32-bit IPv4 addresses.
Routing RIP is a simple distance vector protocol that defines networks based on how many hops they
Information are from the router. When a network is more than 15 hops away (one hop is one link), it is not
Protocol (RIPv6) included in the routing table.
RIPv6, also referred to as RIPng (for "next generation") is similar to RIPv2. Extensions to RIPv2
to support IPv6 are:
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In RIPv6, each router uses a routing table to keep track of every destination that is reachable
throughout the system. Each entry in the routing table contains:
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C613-50007-01 REV B
If no neighbour advertisement is received, the node concludes that the address is available
and assigns it to the chosen interface.
The node then sends one or more router solicitations to detect if any routers are present.
Any routers present responds with a router advertisement.
If no router advertisement is received, the node tries to use DHCP to obtain an address
and other configuration information. If no DHCP server responds, the node continues
using the link-level address
If no router advertisement is received, the node tries to use DHCP to obtain an address
and other configuration information. If no DHCP server responds, the node continues
using the link-level address.
If a router advertisement is received, this message informs the node how to proceed with
the auto configuration process.
The prefix from the router advertisement, if received, is added to the link-level address to
form the global unicast IP address.
This address is then assigned to the network interface.
If routers are present, the node continues to receive router advertisements. The node
updates its configuration when there are changes in the router advertisements.
the address field of a routing entry is expanded to 128 bits to allow IPv6 prefixes
the 32-bit RIPv2 subnet mask field is replaced by an 8-bit prefix length field
authentication is removed in RIPv6
the size of a routing packet is no longer arbitrarily limited
RIPv6 specifies the next hop instead of simply allowing the recipient of the update to set
the next hop to the sender of the update.
the IPv6 prefix of the destination
a metric, which represents the total cost of getting a packet from the router to that
destination
the IPv6 address of the next router along the path to the destination
a flag to indicate that information about the route has changed recently
various timers associated with the route.
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
IPv6 Introduction
24.9