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Chapter 23: IPv6

STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide

f. IPv6 multicast is currently not supported except for basic IPv6 functionality (DHCPv6, ND/RD, etc.). Non-basic IPv6

multicast is blocked.

g. Packets that have the IPv6 loopback address (::1) as their source or destination IP address are dropped.

4. The Cable Source Verify feature can also be used to verify the source IPv6 address of packets originating from a CPE.

5. The C4/c CMTS supports standard IPv6 ACLs and extended IPv6 ACLs.

IPv6 Configure Commands

The following section provides a list of commands used to configure and enable IPv6 routing on the C4/c CMTS.

Note: The IPv6 configuration commands do not support subinterfaces. To configure the IPv6 IP address for the specified

interface:

configure interface gigabitethernet <slot>[/port.[.subif]] ipv6 address <addr> [eui-64] [link-local]

Where: <addr> Represents the IPv6 address/prefix.

To set the default limit for router advertisements and all IPv6 packets originated by the router:

configure ipv6 [no] hop-limit <number>

To display the usability status of interfaces configured for IPv6:

show ipv6 interface <WORD>

To establish static routes from the IPv6 route table:

configure ipv6 route <ipv6-address1>/<prefix-length> <ipv6-address2> [admin-distance <int>] [metric

<int>]

The previous command has an interface option if the next-hop address is a link-local address, as can be seen in the

following examples:

configure ipv6 route 2001:1234:0:1::/64 ?

<WORD> - Next Hop IPv6 address

cable - Network Interface to use

cable-mac - Network Interface to use

gigabitEthernet - Network Interface to use

null - Null Interface

tenGigabitEthernet - Network Interface to us

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