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 I Pv6, an d can be
managed through either of these address type s. For info rmation o n config uring 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 globa l unicas t. A
link-local address makes the switch accessible ov er IPv6 for al l devices attache d to
the same local subnet. Management traffic using this kind of ad dress 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. Ho wever, t o
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 typ es can
either be manually configured or dynamically assigned.
Command Usage
• This section describes how t o configure a single loca l interface for initial access to
the stack. To configure multiple IP inter faces on t his 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 defi ned on this stack and e xternal
network interfaces, you must configure static routes (page 1 9-21) o r use dynamic
routing; i.e., either RIP or OSPF (page 20-2 and 20-14 , respecti vely).
• The precedence for configuring IP interface s is the IP / Gene ra l / Routing Int erfa ce
menu (page 19-5), static routes (page 19-21), and then dynamic routing.
• All IPv6 addresses must be formatted according to R FC 2 373 “I Pv6 A ddres sing
Architecture,” using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address t o indic ate the appr opriate nu mbe r 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 move d to anot her
network segment, you will lose management access to the stack. In this case, you
can reboot the stack or submi t a cl ie nt req uest to restar t D HCP serv ic e via the CL I.
Web – If the address assigned by DHCP is no l onger functi oning, you wil l 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#
3
9
-
2
Setting the Switch’s IP Address (IP Version 6)

4