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Setting the Switch’s IP Address
(IP Version 6)
This section describes how to configure an initial IPv6 interface for management
access over the network. This switch supports both IPv4 and IPv6, and can be
managed through either of these address types. For information on configuring the
switch with an IPv4 address, see “Setting the Switch’s IP Address (IP Version 4)” on
page 4-5.
Configuring an IPv6 Address
IPv6 includes two distinct address types – link-local unicast and global unicast. A
link-local address makes the switch accessible over IPv6 for all devices attached to
the same local subnet. Management traffic using this kind of address cannot be
passed by any router outside of the subnet. A link-local address is easy to set up,
and may be useful for simple networks or basic troubleshooting tasks. However, to
connect to a larger network with multiple segments, the switch must be configured
with a global unicast address. Both link-local and global unicast address types can
either be manually configured or dynamically assigned.
Command Usage
• This section describes how to configure a single local interface for initial access to
the stack. To configure multiple IP interfaces on this stack, you must set up an IP
interface for each VLAN (page 19-4).
• To enable routing between the different interfaces on this stack, you must enable
IP routing (page 19-4).
• To enable routing between the interfaces defined on this stack and external
network interfaces, you must configure static routes (page 19-21) or use dynamic
routing; i.e., either RIP or OSPF (page 20-2 and 20-14, respectively).
• The precedence for configuring IP interfaces is the IP / General / Routing Interface
menu (page 19-5), static routes (page 19-21), and then dynamic routing.
• All IPv6 addresses must be formatted according to RFC 2373 “IPv6 Addressing
Architecture,” using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address to indicate the appropriate number of zeros
required to fill the undefined fields.
4-9
Renewing DCHP
– DHCP may lease addresses to clients indefinitely or for a
specific period of time. If the address expires or the stack is moved to another
network segment, you will lose management access to the stack. In this case, you
can reboot the stack or submit a client request to restart DHCP service via the CLI.
Web – If the address assigned by DHCP is no longer functioning, you will not be
able to renew the IP settings via the web interface. You can only restart DHCP
service via the web interface if the current address is still available.
CLI
– Enter the following command to restart DHCP service.
Console#ip dhcp restart client
Console#
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Setting the Switch’s IP Address (IP Version 6)
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