Configuring VRRP
657
The priority ranges from 0 to 255. The greater the number, the higher the priority.
However the value can only be taken from 1 to 254. The priority 0 is reserved for
special use and 255 is reserved for the IP address owner by the system.
By default, the priority is 100.
n
The priority for IP address owner is always 255, which cannot be configured
otherwise.
Configuring Preemption
and Delay for a Switch
within a Virtual Router
Once a switch in the virtual router becomes the Master switch, so long as it still
functions properly, other switches, even configured with a higher priority later,
cannot become the Master switch unless they are configured to work in
preemption mode. The switch in preemption mode will become the Master
switch, when it finds its own priority is higher than that of the current Master
switch. Accordingly, the former Master switch will become the Backup switch.
Together with preemption settings, a delay can also be set. In this way, a Backup
will wait for a period of time before becoming a Master. In an unstable network if
the Backup switch has not received the packets from the Master switch punctually,
it will become the Master switch. However, the failure of Backup to receive the
packets may be due to network congestion, instead of the malfunction of the
Master switch. In this case, the Backup will receive the packet after a while. The
delay settings can thereby avoid the frequent status changing.
Perform the following configuration in VLAN interface view.
The delay ranges from 0 to 255, measured in seconds. By default, the preemption
mode is preemption with a delay of 0 second.
n
If preemption mode is cancelled, the delay time will automatically become 0
second.
Configuring
Authentication Type and
Authentication Key
VRRP provides following authentication types:
■
simple
: Simple character authentication
■
md5
: MD5 authentication
Table 596
Configure the priority of switches in the virtual router.
Operation
Command
Configure the priority of switches in the
virtual router.
vrrp vrid
virtual
-
router
-
ID
priority
priority
Clear the priority of switches in the virtual
router.
undo vrrp vrid
virtual-router-ID
priority
Table 597
Configure preemption and delay for a switch within a virtual router
Operation
Command
Enable the preemption mode and configure a
period of delay.
vrrp vrid
virtual
-
router
-
ID
preempt-mode
[
timer
delay
delay
-
value
]
Disable the preemption mode.
undo vrrp vrid
virtual
-
router
-
ID
preempt-mode
Summary of Contents for Switch 8807
Page 14: ......
Page 32: ...32 CHAPTER 2 COMMAND LINE INTERFACE...
Page 50: ...50 CHAPTER 5 MANAGEMENT INTERFACE CONFIGURATION...
Page 54: ...54 CHAPTER 6 CONFIGURATION FILE MANAGEMENT...
Page 64: ...64 CHAPTER 8 SUPER VLAN CONFIGURATION...
Page 70: ...70 CHAPTER 9 ISOLATE USER VLAN CONFIGURATION...
Page 78: ...78 CHAPTER 10 IP ADDRESS CONFIGURATION...
Page 82: ...82 CHAPTER 11 IP PERFORMANCE CONFIGURATION flag ACK window 16079...
Page 100: ...100 CHAPTER 13 ETHERNET PORT CONFIGURATION...
Page 114: ...114 CHAPTER 15 PORT ISOLATION CONFIGURATION...
Page 158: ...158 CHAPTER 18 DIGEST SNOOPING CONFIGURATION...
Page 162: ...162 CHAPTER 19 FAST TRANSITION...
Page 219: ......
Page 220: ...220 CHAPTER 24 VLAN ACL CONFIGURATION...
Page 234: ...234 CHAPTER 25 802 1X CONFIGURATION...
Page 284: ...284 CHAPTER 28 IP ROUTING PROTOCOL OVERVIEW...
Page 290: ...290 CHAPTER 29 STATIC ROUTE CONFIGURATION...
Page 338: ...338 CHAPTER 31 OSPF CONFIGURATION...
Page 392: ...392 CHAPTER 33 BGP CONFIGURATION...
Page 404: ...404 CHAPTER 34 IP ROUTING POLICY CONFIGURATION...
Page 406: ...406 CHAPTER 35 ROUTE CAPACITY CONFIGURATION...
Page 408: ...408 CHAPTER 36 RECURSIVE ROUTING CONFIGURATION...
Page 416: ...416 CHAPTER 37 IP MULTICAST OVERVIEW...
Page 430: ...430 CHAPTER 39 IGMP SNOOPING CONFIGURATION...
Page 454: ...454 CHAPTER 42 IGMP CONFIGURATION...
Page 462: ...462 CHAPTER 43 PIM DM CONFIGURATION...
Page 506: ...506 CHAPTER 46 MBGP MULTICAST EXTENSION CONFIGURATION...
Page 528: ...528 CHAPTER 48 MPLS BASIC CAPABILITY CONFIGURATION...
Page 632: ...632 CHAPTER 51 MPLS VLL...
Page 652: ...652 CHAPTER 52 VPLS CONFIGURATION...
Page 666: ...666 CHAPTER 53 VRRP CONFIGURATION...
Page 680: ...680 CHAPTER 56 ARP TABLE SIZE CONFIGURATION...
Page 718: ...718 CHAPTER 59 NETSTREAM CONFIGURATION...
Page 728: ...728 CHAPTER 61 POE CONFIGURATION...
Page 736: ...736 CHAPTER 63 UDP HELPER CONFIGURATION...
Page 746: ...746 CHAPTER 64 SNMP CONFIGURATION...
Page 792: ...792 CHAPTER 68 FILE SYSTEM MANAGEMENT...
Page 800: ...800 CHAPTER 69 DEVICE MANAGEMENT...
Page 810: ...810 CHAPTER 70 FTP TFTP CONFIGURATION...
Page 840: ...840 CHAPTER 72 SYSTEM MAINTENANCE AND DEBUGGING...
Page 844: ...844 CHAPTER 74 PACKET STATISTICS CONFIGURATION...
Page 846: ...846 CHAPTER 75 ETHERNET PORT LOOPBACK DETECTION...
Page 860: ...860 CHAPTER 76 QINQ CONFIGURATION...
Page 866: ...866 CHAPTER 77 NQA CONFIGURATION...
Page 876: ...876 CHAPTER 78 PASSWORD CONTROL CONFIGURATION...