Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) - Manual (Page 671)

Brocade 6910 Ethernet Access Switch Configuration Guide 615
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IPv6 Interface
ND advertised reachable time is 0 milliseconds
Console#
This example displays a brief summary of IPv6 addresses configured on the switch.
Console#show ipv6 interface brief
Interface VLAN IPv6 IPv6 Address
--------------- ---------- ---------- ------------------------------------
VLAN 1 Up Up 2001:DB8:2222:7273::72/96
VLAN 1 Up Up FE80::2E0:CFF:FE00:FD%1/64
TABLE 146 show ipv6 interface - display description
Field Description
VLAN A VLAN is marked “up” if the switch can send and receive packets on this interface, “down” if
a line signal is not present, or “administratively down” if the interface has been disabled by
the administrator.
IPv6 IPv6 is marked “enable” if the switch can send and receive IP traffic on this interface,
“disable” if the switch cannot send and receive IP traffic on this interface, or “stalled” if a
duplicate link-local address is detected on the interface.
Link-local
address Shows the link-local address assigned to this interface
Global unicast
address(es) Shows the global unicast address(es) assigned to this interface
Joined group
address(es) In addition to the unicast addresses assigned to an interface, a node is required to join the
all-nodes multicast addresses FF01::1 and FF02::1 for all IPv6 nodes within scope 1
(interface-local) and scope 2 (link-local), respectively.
FF01::1/16 is the transient interface-local multicast address for all attached IPv6 nodes, and
FF02::1/16 is the link-local multicast address for all attached IPv6 nodes. The interface-local
multicast address is only used for loopback transmission of multicast traffic. Link-local
multicast addresses cover the same types as used by link-local unicast addresses, including
all nodes (FF02::1), all routers (FF02::2), and solicited nodes (FF02::1:FFXX:XXXX) as
described below.
A node is also required to compute and join the associated solicited-node multicast addresses
for every unicast and anycast address it is assigned. IPv6 addresses that differ only in the
high-order bits, e.g. due to multiple high-order prefixes associated with different aggregations,
will map to the same solicited-node address, thereby reducing the number of multicast
addresses a node must join. In this example, FF02::1:FF90:0/104 is the solicited-node
multicast address which is formed by taking the low-order 24 bits of the address and
appending those bits to the prefix.
ND DAD Indicates whether (neighbor discovery) duplicate address detection is enabled.
number of DAD
attempts The number of consecutive neighbor solicitation messages sent on the interface during
duplicate address detection.
ND retransmit
interval The interval between IPv6 neighbor solicitation retransmissions sent on an interface during
duplicate address detection.
ND advertised
retransmit
interval The retransmit interval is included in all router advertisements sent out of an interface so that
nodes on the same link use the same time value.
ND reachable
time The amount of time a remote IPv6 node is considered reachable after a reachability
confirmation event has occurred
ND advertised
reachable time The reachable time is included in all router advertisements sent out of an interface so that
nodes on the same link use the same time value.