Avaya Configuring IP Services Bedienungsanleitung Seite 154

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Configuring IP Services
5-24 114065 Rev. A
There is an optimum cost for each type of network. We suggest the following
values for this parameter:
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.
Network Type//Bit Rate Suggested Metric Cost
> = 100 Mb/s 1 (default)
Ethernet/802.3 10
E1 48
T1 65
64 Kb/s 1562
56 Kb/s 1785
19.2 Kb/s 5208
9.6 Kb/s 10416
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.
Site Manager: MTU Size parameter: page A-83
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