Chapter 23: Ipv6 Proxy Routing; Overview; Preparing A Mixed Stack For Ipv6 Proxy Routing - Enterasys SECURESTACK C3 Configuration Manual

This chapter describes the commands used to enable IPv6 proxy routing and the suggested
procedure to configure a mixed C2 and C3 stack to use IPv6 proxy routing.
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Overview

Preparing a Mixed Stack for IPv6 Proxy Routing

Commands
Overview
IPv6 proxy routing allows a mixed C2/C3 stack to support some IPv6 routing functionality. When
IPv6 proxy routing is enabled, all the switches in the stack can support IPv6 unicast routing and
IPv6 tunneling. You can configure port‐based and VLAN‐based IPv6 routing interfaces on any C2
or C3 stack unit. There is no change in existing IPv4 routing capabilities.
Since this is a function that exists only in a mixed stack, it is implemented only in the C2 firmware,
release 5.01 and later. For IPv6 proxy routing to exist in the stack, a C3 unit must run as the
manager of the stack. To facilitate this, the stack manager preference of C3 units should be set to a
higher value than C2 units. If a C3 unit is added to an all C2 stack, you must move the manager to
a C3 unit to use this feature.
Multiple C3 units can exist in the mixed stack. All the C3 units in the mixed stack will
independently perform hardware IPv6 routing/tunneling. The manager C3 unit will transparently
do the hardware IPv6 routing/tunneling for all the C2 units.
When IPv6 proxy routing is enabled, the C2 being configured for routing/tunneling (called the
proxy client) is configured to redirect the routed IPV6/Tunneling packets to one of the stacking
ports of the C3 stack manager (called the proxy server). The C2 is only configured if the proxy
feature is already enabled on the stack. It should be noted that only IPv6 packets with a
destination MAC of the router MAC of the system are redirected to the proxy server.
On the proxy server, all incoming packets to the stacking ports with a destination of one of the
stacking ports will be processed through L2 and L3 switching logic. If the destination port is not
one of the stacking ports (not an IPv6 packet), then the incoming packet is forwarded based on
header information.
This feature is disabled by default.
In order to use the OSPF, PIM‐SM, DVMRP, or VRRP protocols, you must have purchased and
installed the C2 advanced routing license.
IPv6 Proxy Routing
Refer to page...
SecureStack C3 Configuration Guide 23-1
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