Routing (Ripng); 6To4 Tunneling - Cisco Small Business Pro SA 520W Administration Manual

Networking
Configuring IPv6 Addressing
NOTE
STEP 1
STEP 2
STEP 3
Cisco SA 500 Series Security Appliances Administration Guide

Routing (RIPng)

RIPng (Routing Information Protocol - next generation, RFC 2080) is a routing
protocol that uses UDP packets to exchange routing information through port 521.
The distance to a destination is measured by the hop count, as follows:
• The hop count from a router to a directly connected network is 0.
• The hop count between two directly connected routers is 1.
• When the hop count is greater than or equal to 16, the destination network
or host is unreachable.
By default, the routing update is sent every 30 seconds. If the security appliance
receives no routing updates from a neighbor after 180 seconds, the routes learned
from the neighbor are considered as unreachable. After another 240 seconds, if no
routing update is received, the security appliance remove these routes from the
routing table.
RIPng is disabled by default.
Click Networking on the menu bar, and then click IPv6 > Routing (RIPng) in the
navigation tree.
The Routing (RIPng) page appears.
Check the Enable RIPNG box to enable RIPng. Uncheck the box to disable this
protocol.
Click Apply to save your settings, or click Reset to revert to the saved settings.

6to4 Tunneling

Automatic tunneling allows traffic from a LAN IPv6 network to be tunneled through
to a WAN IPv4 network, and vice versa. You should enable this feature if you have
an end site or end user that needs to connect to the IPv6 Internet using the existing
IPv4 network.
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