
Customizing OSPF Services
117356-A Rev. A 7-49
Specifying the MTU Size
OSPF recognizes a maximum transmission unit (MTU) size for updates
transmitted on an interface.
By default, when you configure OSPF on an interface, OSPF uses the MTU size
specified for the type of network to which the interface is connected.
Using Site Manager, you can configure OSPF to
• Send packets no larger than the IP MTU size for Ethernet (1500).
• Use the MTU size you specify. The number you enter must be less than the IP
MTU size for that physical interface
Using the BCC
Navigate to an interface-specific OSPF prompt and enter
mtu
size
Note: When running OSPF over a synchronous/PPP link, set the MTU size to
a value less than the synchronous MTU size (1200). This allows all OSPF
routes to be learned over the link.
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