HP ProCurve Series 6120 Blade Switches IPv6 Configuration Guide

Introduction to IPv6
Configurable IPv6 Security
IP Preserve
IP Preserve operation preserves both the IPv4 and IPv6 addresses configured
on VLAN 1 (the default VLAN) when a configuration file is downloaded to the
switch using TFTP. Refer to “IP Preserve for IPv6” on page 5-27.
Web Browser Interface
For the web browser interface, the software adds the following IPv6 function-
ality:
■ configure and display IPv6 addressing
■ ping6 diagnostic operation
Path MTU (PMTU) Discovery
IPv6 PMTU operation is managed automatically by the IPv6 nodes between
the source and destination of a transmission. For Ethernet frames, the default
MTU is 1500 bytes. If a router on the path cannot forward the default MTU
size, it sends an ICMPv6 message (PKT_TOO_BIG) with the recommended
MTU to the sender of the frame. If the sender of the frame is an IPv6 node that
supports PMTU discovery, it will then use the MTU specified by the router and
cache it for future reference.
For related information, refer to:
■ RFC 1981: “Path MTU Discovery for IP version 6”
Configurable IPv6 Security
This section outlines the configurable IPv6 security features supported in the
software.
SSHv2 on IPv6
SSHv2 provides for the authentication between clients and servers, and
protection of data integrity, and privacy. It is used most often to provide a
secure alternative to Telnet and is also used for secure file transfers (SFTP
and SCP). SSH functionality is supported on ProCurve switches running either
IPv4 or IPv6. When SSH operation is enabled (the default setting), it automat-
ically runs for both IPv4 and IPv6 traffic.
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