DGS-3312SR Stackable Gigabit Layer 3 Switch
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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- 5. 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.
Figure 5- 6. Newly Created MD5 Key List window
The MD5 key settings must satisfy the requirements listed here:
Parameter
Description
Key ID
A number from
1
to
255
used to identify the MD5 Key.
Key
A alphanumeric string of between
1
and
16
case-sensitive characters used to
generate the Message Digest which is in turn, used to authenticate OSPF packets
within the OSPF routing domain.
