Allied Telesis AR400 Series Router - Manual (Page 115)

Routing 115
Software Release 2.6.1
C613-02021-00 REV D
Figure 21: Example output from the SHOW RSVP INTERFACE command.
To interpret output from the SHOW RSVP INTERFACE command see the
Resource Reservation Protocol (RSVP) chapter in the AR400 Series Router Software
Reference.
OSPF
Open Shortest Path First (OSPF) is an Internal Gateway Routing Protocol,
based on Shortest Path First (SPF) or link-state technology. OSPF is a routing
protocol that determines the best path for routing IP traffic over a TCP/IP
network.
These features are supported by OSPF:
■ Authentication of routing updates.
■ Tagging of externally-derived routes.
■ Fast response to topology changes with low overhead.
■ Load sharing over meshed links.
OSPF supports three types of physical networks—point-to-point, broadcast
and non-broadcast.
When using OSPF to route an IP packet, the router looks up the routing table
entry which best matches the destination of the packet. This routing table entry
contains the interface and nexthop router to forward the IP packet to its
destination. The routing table entry that best matches the destination is
determined first by the path type, then the longest (most specific) network
mask. At this point there may still be multiple routing entries to the
destination; if so then equi-cost multi-path routes exist to the destination. Such
equi-cost routes are appropriately used to share the load to the destination.
RSVP Interfaces
Maximum Reserved No. Of
Interface Enabled Bandwidth(%) Bandwidth(%) Reservations Debug Encap
------------------------------------------------------------------------------
Dynamic No 75 0 0 None RAW
vlan11 Yes 75 0 1 None RAW
ppp0 Yes 75 0 0 None RAW
------------------------------------------------------------------------------