HP 3500YL - Manual (Page 295)

IP Routing Features
Configuring OSPF
Displaying OSPF Traps Enabled
In the default configuration, OSPF traps are disabled. Use this command to
view which OSPF traps have been enabled.
Syntax: show ip ospf traps
Lists the OSPF traps currently enabled on the routing switch.
For more information on OSPF trap use, refer to “10: Optional: Change OSPF
Trap Generation Choices” on page 5-80.
Debugging OSFP Routing Messages
The debug ip ospf command turns on the tracing of OSPF packets.
Syntax: debug ip ospf
Displays OSPF routing messages.
OSPF Equal-Cost Multipath (ECMP) for Different
Subnets Available Through the Same
Next-Hop Routes
The switches covered by this guide support optional load-sharing across
redundant links where the network offers two, three, or four equal-cost next-
hop routes for traffic to different subnets. (All traffic for different hosts in the
same subnet goes through the same next-hop router.)
For example, in the OSPF network shown below, IP load-sharing is enabled
on router “A”. In this case, OSPF calculates three equal-cost next-hop routes
for each of the subnets and then distributes per-subnet route assignments
across these three routes.
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