R3303-HP HSR6800 Routers Layer 3 - IP Routing Command Reference

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trans-delay seconds: Specifies the transmission delay interval in seconds, in the range of 1 to 3600. The
default is 1.
dead seconds: Specifies the dead interval in seconds, in the range of 1 to 32768. The default is 40. It
must be identical to that on the virtual link neighbor. The dead interval is at least four times the hello
interval.
md5: Specifies the MD5 authentication mode.
hmac-md5: Specifies the HMAC-MD5 authentication mode.
simple: Specifies the simple authentication mode.
key-id: Specifies a key by its ID in the range of 1 to 255.
cipher: Specifies a ciphertext password.
plain: Specifies a plaintext password.
password: Specifies a password. In simple authentication mode, a plaintext password is a case-sensitive
string of 1 to 8 characters, and a ciphertext password is a case-sensitive string of 1 to 41 characters. In
MD5/HMAC-MD5 authentication mode, a plaintext password is a case-sensitive string of 1 to 16
characters, and a ciphertext password is a case-sensitive string of 1 to 53 characters.
Usage guidelines
As defined in RFC 2328, all non-backbone areas must maintain connectivity to the backbone. You can
use the vlink-peer command to configure a virtual link to connect an area to the backbone.
Considerations on parameters:
• The smaller the hello interval is, the faster the network converges and the more network resources
are consumed.
• A so small retransmission interval will lead to unnecessary retransmissions. A big value is
appropriate for a low speed link.
• You need to specify an appropriate transmission delay with the trans-delay keyword.
• You can specify either MD5/HMAC-MD5 authentication or simple authentication for a virtual link.
For MD5/HMAC-MD5 authentication, you can configure multiple keys by executing this command
multiple times, and each command must have a unique key ID and key string.
• For security purposes, all passwords, including passwords configured in plain text, are saved in
cipher text to the configuration file.
• If no cipher or plain is specified, the default password type for MD5/HMAC-MD5 authentication
mode is cipher, and the default password for simple authentication mode for is plain.
• If you configure OSPF authentication for both the backbone area and a virtual link, the virtual link
uses the OSPF authentication configured on it.
Examples
# C o n f i g u re a vi r t u a l l i n k t o t h e n e i g h b o r wi t h r o u t e r I D 1.1.1.1.
<Sysname> system-view
[Sysname] ospf 100
[Sysname-ospf-100] area 2
[Sysname-ospf-100-area-0.0.0.2] vlink-peer 1.1.1.1
Related commands
• authentication-mode
• display ospf vlink