3Com 5500G-EI Command Reference Guide - Page 209

OSPF Configuration Commands 209 Cancel the binding of MIB operation. [SW5500]undo ospf mib-binding ospf mtu-enable Syntax ospf mtu-enable undo ospf mtu-enable View VLAN Interface view Parameter None Description Using the ospf mtu-enable command, you can enable the interface to write the MTU value when sending DD packets. Using the undo ospf mtu-enable command, you can restore the default. By default, the MTU value is 0 when sending DD packets, that is the MTU value of the interface is not written. DD packets (Database Description Packet) are sent by the router to describe its own LSDB when the router running OSPF protocol is synchronizing the database. Example To set interface Vlan-interface 3 to write the MTU value when sending DD packets, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]interface Vlan-interface 3 [SW5500-Vlan-interface 3]ospf mtu-enable ospf network-type Syntax ospf network-type { broadcast | nbma | p2mp | p2p } undo ospf network-type View VLAN Interface View Parameter broadcast Change the interface network type to broadcast. nbma Change the interface network type to NBMA. p2mp Change the interface network type to p2mp. p2p Change the interface network type to point-to-point.