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Cisco IE 2000 Switch Software Configuration Guide
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Chapter 42 Configuring IPv6 Host Functions
Information About Configuring IPv6 Host Functions
Configuration of IPv6 hosts as trap receivers
For support over IPv6, SNMP modifies the existing IP transport mapping to simultaneously support IPv4
and IPv6. These SNMP actions support IPv6 transport manageme nt:
Opens User Datagram Protocol (UDP) SNMP socket with default settings
Provides a new transport mechanism called SR_IPV6_TRANSPORT
Sends SNMP notifications over IPv6 transport
Supports SNMP-named access lists for IPv6 transport
Supports SNMP proxy forwarding using IPv6 transport
Verifies SNMP Manager feature works with IPv6 transport
For information on SNMP over IPv6, including configuration procedures, see the “Managing Cisco IOS
Applications over IPv6” chapter in the Cisco IOS IPv6 Configuration Library on Cisco.com.
For information about syslog over IPv6, including configuration procedures, see the “Implementi ng IPv6
Addressing and Basic Connectivity” chapter in t he Cisco IOS IPv6 Configuration Library on Cisco.com.

HTTP over IPv6

The HTTP client sends requests to both IPv4 and IPv6 HTTP se rvers, which respond to requests from
both IPv4 and IPv6 HTTP clients. URLs with literal IPv6 ad dresses must be specified in hexadecimal
using 16-bit values between colons.
The accept socket call chooses an IPv4 or IPv6 address family. The accept socket is either an IPv4 or
IPv6 socket. The listening socket continues to listen for both IPv4 and IPv6 signals that indicate a
connection. The IPv6 listening socket is bound to an IPv6 wildcard address.
The underlying TCP/IP stack supports a dual-stack environment. HTTP relies on th e TCP/IP stack and
the sockets for processing network-layer interactions.
Basic network connectivity (ping) must exist between the client and the server hosts before HTTP
connections can be made.
Default IPv6 Settings
Tab l e 42-1 Default IPv6 Settings
Feature Default Setting
SDM template Default.
IPv6 addresses None configured.