D-Link DGS-3312SR, Руководство по эксплуатации продукта

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DGS-3312SR Gigabit Layer 3 Switch
be forwarded instead to the advertisement’s originator.
TOS The Type of Service that the following cost is relevant to.
Metric The cost of this route. The interpretation of this metric depends on
the external type indication (the E – bit above).
External Route Tag A 32-bit field attached to each external route. This is not used by
the OSPF protocol itself.
MD5 Key Settings
MD5 authentication is used to identify trusted routers sending OSPF packets. By default no authentication is used for
OSPF so it is not necessary to configure any MD5 keys to use OSPF. MD5 authentication can be set up at any time, before
or after you have configured OSPF settings.
The MD5 Key Setting window allows the entry of a 16-character Message Digest
−
version 5 (MD5) key that can be used
to authenticate every packet exchanged between OSPF routers. It is used as a security mechanism to limit the exchange of
network topology information to the OSPF routing domain.
MD5 Keys created here are entered in when setting up OSPF interfaces. Please read the description in the section below
about OSPF Interface Settings.
To configure an MD5 Key, click the MD5 Key Settings link in the Layer 3 IP Networking folder to open the following
window:
Figure 5- 19. MD5 Key Setting window
To add an MD5 key to the table, type a unique Key ID (Key Identifier) and provide a Key in the fields provided. Click the
Add/Modify button to add the key to the MD5 Key Table.
To remove a key, simply click the X in the Delete column for the Key you wish to remove.
To change an existing key in the list, type the Key ID for that key in the Key ID field, change the Key as desired and click
the
Add/Modify button. The modified key will appear in the new list.
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