Users Guide

Table Of Contents
Security and
Access
netadmin and sysadmin
Usage
Information
Use the no version of this command to permit IPv6 routing header Type 0 packets. When configured to
permit IPv6 routing header Type 0 packets, OS10 allows normal switching and routing of packets with
IPv6 routing header Type 0. However, OS10 switches are compliant with RFC 5095 and drops any IPv6
routing header Type 0 packets that are destined to it.
Example:
Configure IPv6
RH0 deny in
hardware
OS10(config)# ipv6 routing-header-type0 deny fast-path
Example:
Configure IPv6
RH0 deny in
hardware and
kernel
OS10(config)# ipv6 routing-header-type0 deny fast-path slow-path
Supported
Releases
10.5.2.3 or later
ipv6 unreachables
Enables generating error messages on an interface for IPv6 packets with unreachable destinations.
Syntax
ipv6 unreachables
Parameters None
Defaults ICMPv6 unreachable messages are not sent.
Command Mode INTERFACE
Usage
Information
By default, when no matching entry for an IPv6 route is found in the IPv6 routing table, the packet
drops and no error message is sent. Use this command to enable sending an IPv6 destination
unreachable error message to the source without dropping the packet.
The no version of this command disables generating unreachable destination messages.
Example
OS10(config)# interface ethernet 1/2/3
OS10(conf-if-eth1/2/3)# ipv6 unreachables
Supported
Releases
10.4.0E(R1) or later
show ipv6 neighbors
Displays IPv6 discovery information. Entering the command without options shows all IPv6 neighbor addresses stored on the
control processor (CP).
Syntax
show ipv6 neighbors [vrf vrf-name] [ipv6-address| interface interface]
Parameters
vrf vrf-name (Optional) Enter vrf then the name of the VRF to display the neighbors corresponding to
that VRF. If you do not specify this option, neighbors corresponding to the default VRF display.
ipv6-address Enter the IPv6 address of the neighbor in the x:x:x:x::x format. The :: notation specifies
successive hexadecimal fields of zero.
interface interface Enter interface then the interface type and slot/port or number information:
For a 10-Gigabit Ethernet interface, enter TenGigabitEthernet then the slot/port/subport[/subport]
information.
For a 40-Gigabit Ethernet interface, enter fortyGigE then the slot/port information.
For a port channel interface, enter port-channel then a number.
For a VLAN interface, enter vlan then a number from 1 to 4093.
Defaults None.
930 Layer 3