LevelOne GTL-2691 - Manual (Page 643)

C HAPTER 19 | Configuring Router Redundancy
Configuring VRRP Groups
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◆ Authentication Mode – Authentication mode used to verify VRRP
packets received from other routers. (Options: None, Simple Text;
Default: None)
If simple text authentication is selected, then you must also enter an
authentication string.
All routers in the same VRRP group must be set to the same
authentication mode, and be configured with the same authentication
string.
Plain text authentication does not provide any real security. It is
supported only to prevent a mis-configured router from participating in
VRRP.
◆ Authentication String – Key used to authenticate VRRP packets
received from other routers. (Range: 1-8 alphanumeric characters)
When a VRRP packet is received from another router in the group, its
authentication string is compared to the string configured on this
router. If the strings match, the message is accepted. Otherwise, the
packet is discarded.
◆ State – VRRP router role. (Values: Master, Backup)
◆ Virtual MAC Address – Virtual MAC address for this group.
◆ Master Router – The primary router servicing this group.
◆ Master Priority – The priority of the master router.
◆ Master Advertisement Interval – The interval at which the master
router sends messages advertising itself as the group master.
◆ Master Down Interval – If no advertisement message is received
from the master router after this interval, backup routers will assume
that the master is dead, and will start bidding to become the group
master.
W EB I NTERFACE
To configure VRRP:
1. Click IP, VRRP.
2. Select Configure Group ID from the Step List.
3. Select Add from the Action List.
4. Enter the VRID group number, and select the VLAN (i.e., IP subnet)
which is to be serviced by this group.
5.
Click Apply.