Multicast and Routing Guide K/KA/KB.15.15

The value can be from 0 to 255 (with 255 as the highest priority.) If you set the
priority to 0, the routing switch does not participate in DR and BDR election. Allows
different settings for different subnet interfaces in the VLAN.
ip ospf priority 1-255 Assigns the specified priority to all networks
configured on the VLAN.
ip ospf ip-address priority
1-255
Assigns the specified priority to the specified
subnet on the VLAN.
ip ospf all priority 1-255 Assigns the specified priority to all networks
configured on the VLAN. Operates the same
as the ip ospf priority option.
Default: 1; range 0–255
Changing retransmit interval per-interface
Syntax:
ip ospf [ ip-address | all ] retransmit-interval 0-3600
Used in the VLAN context to enable changing the retransmission interval for LSAs
on an interface. Allows different settings for different subnet interfaces in the VLAN.
ip ospf priority 1-255 Assigns the specified retransmit interval to
all networks configured on the VLAN.
ip ospf ip-address priority
1-255
Assigns the specified retransmit interval to
the specified subnet on the VLAN.
ip ospf all priority 1-255 Assigns the specified retransmit interval to
all networks configured on the VLAN.
Operates the same as the ip ospf
priority option.
Default: 5 seconds; range: 1–3600 seconds
Changing transit-delay per-interface
Syntax:
ip ospf [ ip-address | all ] transit-delay 0-3600
Used in the VLAN context to enable changing the time it takes to transmit link-state
update packets on this interface. Allows different settings for different subnet
interfaces in the VLAN.
Default: 1 second; range: 1–3600 seconds
ip ospf transit-delay
1-3600
Reconfigures the estimated number of
seconds it takes to transmit a link-state
update packet to all networks configured on
the VLAN.
ip ospf ip-address
transit-delay 1-3600
Reconfigures the estimated number of
seconds it takes to transmit a link-state
update packet to all networks configured on
the specified subnet on the VLAN.
ip ospf all transit-delay
1-3600
Reconfigures the estimated number of
seconds it takes to transmit a link-state
update packet to all networks configured on
the VLAN. (Operates the same as the ip
ospf transit-delay option, above.)
Adjusting performance by changing the VLAN or subnet interface settings 157