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Unsupported Ipv6 Unicast Routing Features - Cisco Catalyst 3750-E Software Configuration Manual

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Understanding IPv6
SNMP and syslog over IPv6 provide these features:
For support over IPv6, SNMP modifies the existing IP transport mapping to simultaneously support IPv4
and IPv6. These SNMP actions support IPv6 transport management:
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.

Unsupported IPv6 Unicast Routing Features

The switch does not support these IPv6 features:
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
41-8
Support for both IPv4 and IPv6
IPv6 transport for SNMP and to modify the SNMP agent to support traps for an IPv6 host
SNMP- and syslog-related MIBs to support IPv6 addressing
Configuration of IPv6 hosts as trap receivers
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
IPv6 policy-based routing
IPv6 virtual private network (VPN) routing and forwarding (VRF) table support
Support for IPv6 routing protocols: multiprotocol Border Gateway Protocol (BGP) and Intermediate
System-to-Intermediate System (IS-IS) routing
IPv6 packets destined to site-local addresses
Tunneling protocols, such as IPv4-to-IPv6 or IPv6-to-IPv4
Chapter 41
Configuring IPv6 Unicast Routing
OL-9775-08

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