D-Link DGS-3630-28SC [287/742] Ospfv2 bfd settings
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D-Link DGS-3630-28SC [287/742] Ospfv2 bfd settings

D-Link DGS-3630-28PC [287/742] Ospfv2 bfd settings
DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
275
Parameter Description
topology changes, but might cause routing instability.
Select the Default option to use the default value which is 40 seconds.
Priority
Enter the priority value here. The range is from 0 to 255. The OSPF router will
determine a Designated Router (DR) for the multi-access network. This sets the
priority used to determine the OSPF DR for a network. If two routers attempt to
become the DR, the router with the higher router priority will be elected the DR. If
the routers have the same priority, the router with the higher router ID takes
precedence. Only routers with non-zero router priority values are eligible to
become the DR or Backup Designated Router (BDR).
Select the Default option to use the default value which is 1.
Network Type
Select the network type here. Options to choose from are:
• Broadcast - Specifies the network type as broadcast.
• Point-to-Point - Specifies the network type as point-to-point.
On a broadcast network, only the DR and BDR become adjacent neighbors of all
other routers attached. On point-to-point networks, only two routers become
adjacent if they can communicate.
Authentication
Select the authentication type that will be used here. Options to choose from are
None, Simple Password, and MD5.
Password
After selecting the Simple Password option, enter the simple password here.
This password can be up to 8 characters long. The syntax is general string that
does not allow spaces.
This creates a password (key) that is inserted into the OSPF header when the
router originates routing protocol packets. Assign a separate password to each
network for different interfaces. Routers on the same network must use the same
password to be able to exchange OSPF routing data. Configure the routers in the
same routing domain with the same password.
MD5 Key ID
Enter the MD5 key ID for the password here. The range is from 1 to 255.
MD5
Enter the MD5 key here. This key must be 16 characters long. The syntax is an
alphanumeric string that does not allow spaces.
In the MD5 mode, the OSPF message sender will compute a message digest
based on the message digest key for the TX message. The message digest and
the key ID will be encoded in the packet. The receiver of the packet will verify the
digest in the message against the digest computed based on the locally defined
message digest key corresponding to the same key ID.
The same key ID on the neighboring router should be defined with the same key
string.
All the neighboring routers on the same interface must use the same key to
exchange the OSPF packet with each other. Normally, all neighboring routers on
the interface use the same key.
With the MD5 digest mode, the user can roll over to a new key without disrupting
the current message exchange using the new key. Supposing that a router is
currently using an old key to exchange OSPF packets with the neighbor router, as
the user configures a new key, the router will start the roll over process by
sending duplicated packets for both of the old and the new key. The router will
stop sending duplicated packets until it finds that all routers on the network have
learned the new key. After the rollover process completed, the user should delete
the old key to prevent the router from communicating with the router using the old
key.
Click the Apply button to accept the changes made.
OSPFv2 BFD Settings
This window is used to display and configure the OSPFv2 BFD settings.

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