Alcatel-Lucent 6850-48 Reference Guide
IPv6 Commands
page 33-50
OmniSwitch CLI Reference Guide
September 2009
show ipv6 router database
Displays a list of all routes (static and dynamic) that exist in the IPv6 router database. This database serves
as a central repository where routes are first processed for redistribution and where duplicate routes are
compared to determine the best route to use. If a route does not appear in the IPv6 router database list, then
the switch does not know about it. In the case of dynamically learned routes, this could indicate that the
route was never received by the switch.
as a central repository where routes are first processed for redistribution and where duplicate routes are
compared to determine the best route to use. If a route does not appear in the IPv6 router database list, then
the switch does not know about it. In the case of dynamically learned routes, this could indicate that the
route was never received by the switch.
show iv6p router database [protocol type | gateway ipv6_address | dest ipv6_prefix/prefix_length]
Syntax Definitions
type
Routing protocol type (local, static, OSPF, RIP, or BGP).
gateway ipv6_address
IPv6 address of the next hop used to reach the destination IPv6 address.
ipv6_prefix
IPv6 network that is the destination of this static route.
/prefix_length
The number of bits that are significant in the iPv6 address (mask).
(0...128).
(0...128).
Defaults
By default, all routes are displayed.
Platforms Supported
OmniSwitch 6400, 6850, 6855, 9000, 9000E
Usage Guidelines
• The IPv6 forwarding table is derived from IPv6 router database processing performed by the switch
and contains only unique routes that the switch currently uses. Use the show ipv6 routes command to
view the forwarding table.
view the forwarding table.
• If an expected route does not appear in the IPv6 forwarding table, use the show ipv6 router database
command to see if the switch knows about the route and/or if a duplicate route with a higher prece-
dence was selected instead.
dence was selected instead.
• The switch compares the protocol of duplicate routes to determine which one to use. Regardless of
whether or not a route has a higher priority metric value, protocol determines precedence. Local routes
are given the highest level of precedence followed by static, OSFP, RIP, then BGP routes. As a result, a
route that is known to the switch may not appear in the IP forwarding table if a duplicate route with a
higher protocol precedence exists.
are given the highest level of precedence followed by static, OSFP, RIP, then BGP routes. As a result, a
route that is known to the switch may not appear in the IP forwarding table if a duplicate route with a
higher protocol precedence exists.
• A list of inactive static routes is also included in the show ipv6 router database output display. A
route becomes inactive if the interface for its gateway goes down. Inactive routes are unable to get to
their destination and further investigation is warranted to determine why their gateway is unavailable.
their destination and further investigation is warranted to determine why their gateway is unavailable.
• Routes that appear as inactive are not included in the main IP router database listing. If an inactive
route becomes active, however, it is removed from the inactive list and added to the active route list.