Filter
Top Products
Configuring LSA Throttling Timers
Configured link-state advertisement (LSA) timers replace the standard transmit and acceptance times for
LSAs.
The LSA throttling timers are configured in milliseconds. The interval time increases exponentially until a
maximum time is reached. If the maximum time is reached, the system continues to transmit at the
maximum interval. If the system is stable for twice the maximum interval time, it reverts to the start-
interval timer. The cycle repeats.
To configure the LSA throttling timers, use the following commands.
1. Specify the interval times for all LSA transmissions. CONFIG-ROUTER-OSPF-id mode. timers
throttle lsa all {start-interval | hold-interval | max-interval} To set the minimum
interval between initial sending and resending the same LSA, use the keywords
start-interval.
To set the next interval to send the same LSA, use the keywords hold-interval. The hold-interval
is the time between sending the same LSA after the start-interval is attempted. To set the maximum
amount of time the system waits before sending the LSA, use the keywords
max-interval. The
interval range is 0 to 600,000 milliseconds.
2. Specify the interval for LSA acceptance. CONFIG-ROUTER-OSPF-id mode. timers throttle
lsa all arrival-time
Enabling Passive Interfaces
A passive interface is one that does not send or receive routing information.
Enabling passive interface suppresses routing updates on an interface. Although the passive interface
does not send or receive routing updates, the network on that interface is still included in OSPF updates
sent via other interfaces.
To suppress the interface’s participation on an OSPF interface, use the following command. This
command stops the router from sending updates on that interface.
• Specify whether all or some of the interfaces are passive.
CONFIG-ROUTEROSPF- id mode
passive-interface {default | interface}
The default is enabled passive interfaces on ALL interfaces in the OSPF process.
Entering the physical interface type, slot, and number enables passive interface on only the identified
interface.
– For a 10–Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port
information (for example, passive-interface te 2/1).
– For a port channel, enter the keywords port-channel then a number from 1 to 255 for TeraScale
and ExaScale.
– For a 40-Gigabit Ethernet interface, enter the keyword FortyGigabitEthernet then the slot/
port information (for example, passive-interface fo 2/3).
– For a VLAN, enter the keyword vlan then a number from 1 to 4094 (for example, passive-
interface vlan 2222).
The keyword default sets all interfaces on this OSPF process as passive.
To remove the passive interface from select interfaces, use the no passive-interface
interface command while passive interface default is configured.
636
Open Shortest Path First (OSPFv2 and OSPFv3)