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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 39 Configuring IPv6 Unicast Routing
Understanding 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
For support over IPv6, SNMP modifies the existing IP transport mapping to simultaneously support IPv4
and IPv6. These SNMP actions support IPv6 transport management:
•
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 “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 and Unicast Routing Features
The switch does not support these IPv6 features:
•
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
•
The switch as a tunnel endpoint supporting IPv4-to-IPv6 or IPv6-to-IPv4 tunneling protocols
•
IPv6 unicast reverse-path forwarding