H3C S7500E Series Command Manual page 369

Command Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches
md5: MD5 authentication.
hmac-md5: HMAC-MD5 authentication.
simple: Simple authentication.
key-id: Key ID for MD5 or HMAC-MD5 authentication, in the range 1 to 255.
plain | cipher: Plain or cipher type. If plain is specified, only plain password is
supported and displayed upon displaying the configuration file. If cipher is specified,
both plain and cipher are supported, but only cipher password is displayed when
displaying the configuration file. By default, MD5 and HMAC-MD5 support cipher
password, and simple authentication supports plain password.
password: Plain or cipher password. Simple authentication: For plain type, a plain
password is a string of up to 8 characters. For cipher type, a plain password is a string
of up to 8 characters, and a cipher password is a string of up to 24 characters.
MD5/HMAC-MD5 authentication: For plain type, a plain password is a string of up to 16
characters. For cipher type, a plain password is a string of up to 16 characters, and a
cipher password is a string of up to 24 characters.
Description
Use the vlink-peer command to configure a virtual link.
Use the undo vlink-peer command to remove a virtual link.
As defined in RFC2328, 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.
The authentication mode at the non-backbone virtual link end follows the one at the
backbone virtual link end. The two authentication modes (MD5 or Simple) are
independent, and you can specify neither of them.
Related commands: authentication-mode, display ospf.
Examples
# Configure a virtual link to the neighbor with router ID 1.1.1.1.
<Sysname> system-view
[Sysname] ospf 100
[Sysname-ospf-100] area 2
Chapter 3 OSPF Configuration Commands
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