Http(S) Over Ipv6 - Cisco Catalyst 2975 Software Configuration Manual

Understanding IPv6
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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 "Implementing IPv6
Addressing and Basic Connectivity" chapter in the Cisco IOS IPv6 Configuration Library on Cisco.com.

HTTP(S) Over IPv6

The HTTP client sends requests to both IPv4 and IPv6 HTTP servers, which respond to requests from
both IPv4 and IPv6 HTTP clients. URLs with literal IPv6 addresses 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 the 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.
For more information, see the "Managing Cisco IOS Applications over IPv6" chapter in the Cisco IOS
IPv6 Configuration Library on Cisco.com.
IPv6 and Switch Stacks
The switch supports IPv6 forwarding across the stack and IPv6 host functionality on the stack master.
The stack master runs IPv6 host functionality and IPv6 applications.
While the new stack master is being elected and is resetting, the switch stack does not forward IPv6
packets. The stack MAC address changes, which also changes the IPv6 address. When you specify the
stack IPv6 address with an extended unique identifier (EUI) by using the ipv6 address ipv6-prefix/prefix
length eui-64 interface configuration command, the address is based on the interface MAC address. See
the
If you configure the persistent MAC address feature on the stack and the stack master changes, the stack
MAC address does not change for approximately 4 minutes. For more information, see the
Persistent MAC Address" section on page 6-17
Catalyst 2975 Switch Software Configuration Guide
35-6
Supports SNMP proxy forwarding using IPv6 transport
Verifies SNMP Manager feature works with IPv6 transport
"Configuring IPv6 Addressing and Enabling IPv6 Host" section on page
Chapter 35
in Chapter 6, "Managing Switch Stacks."
Configuring IPv6 Host Functions
35-7.
"Enabling
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