KB.15.15

ManualsBrandsHP ManualsNetwork HardwareHP 5406R-8XGT/8SFP+ (No PSU) v2 zl2 Switch

171

172

173

174

175

176

177

178

179

180

2001:0:db8:17fd:218:71ff:fedd:cf00/64

Prefix

VLANs and routing

IP Routing Interfaces and Routing.

On the routing switches covered by this guide, IPv6 addresses are associated with individual IP

routing interfaces. Link-local addresses are used for switching traffic among devices on the same

IP routing interface, and global unicast addresses are used for routing traffic between different IP

routing interfaces.

Link-local

Only one link-local IPv6 address, such as fe80::215:60ff:fe7a:adc0, can be configured on a given

VLAN on a routing switch.

Global unicast

Multiple global unicast addresses can be configured on the same VLAN interface, as long as the

network prefix for each address occurs only once on the routing switch. For example, you can

configure both of the following addresses on either the same VLAN or on different VLANs:

2001:db8:0:1f::1:6/64

(prefix = 2001:db8:0:1f::/64)

2001:db8:0:2f::1:6/64

(prefix = 2001:db8:0:2f::/64)

That is, for global unicast addressing:

• The same interface identifier can be used with multiple, unique network prefixes (and the

link-local address) on any VLAN.

• Different VLANs must be configured with different network prefixes.

• Only one instance of a given network prefix can be configured on a routing switch.

To summarize these rules:

ApplicationLimitIPv6 address type

Can be either unique or a duplicate of link-local addresses

configured on other VLANs on the routing switch.

one per IP routing interfacelink-local

The network prefix must be unique for each global unicast

address configured on a given routing switch.

multiple per IP routing interfaceglobal unicast

For the maximum number of IPv6 addresses configurable on the routing switch and on a given IP

routing interface, see the "Scalability" appendix in the Management and Configuration Guide for

your routing switch.

IPv6 management interface

In the default configuration, there is a single VLAN (Default_VLAN; VID=1) on the routing switch.

With only the default VLAN configured, a single link-local IPv6 address serves as the management

access address for the entire device. If routing is enabled, the global unicast address on this VLAN

also acts as the routing interface.

IPv6 networks and subnets 173