KB.15.15

When RA Guard is enabled, there will be one or two lines displayed in the running config file.

Figure 18 Running Config File Showing Line for RA-Guard

Displaying the Router Advertisement configuration

Syntax:

show ipv6 nd ra

show ipv6 nd ra prefix vlan vid

Without the optional keywords, this command displays the global and per-VLAN,

and per tunnel router advertisement neighbor discovery configuration on a specific

routing switch. This indicates the per-VLAN or per-tunnel content of RAs transmitted

from the routing switch.

prefix

Displays the prefixes, valid lifetime, and onlink/auto values advertised by the

routing switch on all VLANs or tunnels configured for RA operation.

prefix vlan vid

Displays values for each prefix configured using ipv6 nd ra prefix on the

specified VLAN or tunnel; see page 189.

IPv6 Prefix

Displays values for specific prefixes configured for RAs on a VLAN or tunnel

by the ipv6 nd ra prefix command, plus Default (to apply to any

global unicast prefixes on the same VLAN(s) or tunnel(s) that have not been

specifically configured by ipv6 nd ra prefix).

Valid Lifetime

The valid lifetime configured for the indicated prefix.

Preferred Lifetime

The preferred lifetime configured for the indicated prefix.

On-link Flag

Indicates whether the prefix is advertised as on-link.

Default: On; On-link enabled.

Autonomous Flag

Indicates whether address autoconfiguration is turned on.

196 IPv6 Router Advertisements