R2511-HP MSR Router Series High Availability Command Reference(V5)

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should not be dropped. In this situation, use the vrrp un-check ttl command to disable TTL check on VRRP
packets.
Examples
# Disable TTL check on VRRP packets.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] vrrp un-check ttl
vrrp vrid authentication-mode
Use vrrp vrid authentication-mode to configure authentication mode and authentication key for a VRRP
group to send and receive VRRP packets.
Use undo vrrp vrid authentication-mode to restore the default.
Syntax
vrrp vrid virtual-router-id authentication-mode { md5 | simple } [ cipher ] key
undo vrrp vrid virtual-router-id authentication-mode
Default
Authentication is disabled.
Views
Interface view
Default command level
2: System level
Parameters
virtual-router-id: Specifies a VRRP group by its number in the range of 1 to 255.
md5: Specifies the MD5 authentication mode.
simple: Specifies the simple authentication mode.
cipher: Sets a ciphertext authentication key.
key: Sets the authentication key. This argument is case sensitive.
• When md5 authentication applies, it must be a plaintext string of 1 to 8 characters or a ciphertext
string of 24 characters if the cipher keyword is not specified, or a ciphertext string of 1 to 41
characters if the cipher keyword is specified.
• When simple authentication applies, it must be a plaintext string of 1 to 8 characters if the cipher
keyword is not specified, or a ciphertext string of 1 to 41 characters if the cipher keyword is
specified.
Usage guidelines
For security purposes, all keys, including keys configured in plain text, are saved in cipher text.
Before executing the command, create a VRRP group on an interface and configure the virtual IP address
of the VRRP group.
You might configure different authentication keys for the VRRP groups on an interface. However, the
members of the same VRRP group must use the same authentication key.