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HP 5500 Ei 5500 Si Switch Series Configuration Guide

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The output shows that in VRRP group 1 Switch A is the master, Switch B is the backup and hosts 
with the default gateway of 1::10/64 accesses the Internet through Switch A; in VRRP group 2 
Switch A is the backup, Switch B is the master  and hosts with the default gateway of 2::10/64 
accesses the Internet through Switch B. 
VRRP load balancing mode configuration example 
Network requirements 
•   Switch A, Switch B, and Switch C belong to VRRP group 1 with the virtual IPv6 addresses of 
FE80::10 and 1::10. 
•   Hosts on network segment 1::/64 learn 1::10 as their default gateway through RA messages sent by 
the  swi tches. Use  the  VR R P  g roup to  make  s u re  that when a g ateway ( Swi tch A , Switch B, or  Swi tch 
C) fails, the hosts on the LAN can access the external network through another gateway. 
•   VRRP group 1 is operating in load balancing mo de to make good use of network resources. 
•   Configure a track entry on Switch A, Switch B,  and Switch C to monitor their own VLAN-interface 
3. When the interface on Switch A, Switch B, or Switch C fails, the weight of the corresponding 
switch decreases so that another switch with a higher weight can take over.  
Figure 47  Network diagram 
 
 
Configuration procedure 
1. Configure Switch A: 
# Configure VLAN 2. 
 system-view 
[SwitchA] vlan 2 
[SwitchA-vlan2] port gigabitethernet 1/0/5 
[SwitchA-vlan2] quit
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# Configure VRRP to operate in load balancing mode. 
[SwitchA] vrrp mode load-balance 
# Create VRRP group 1 and configure its virtual IPv6 addresses as FE80::10 and 1::10. 
[SwitchA] interface vlan-interface 2 
[SwitchA-Vlan-interface2] ipv6 address fe80::1 link-local 
[SwitchA-Vlan-interface2] ipv6 address 1::1 64 
[SwitchA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-loca\
l 
[SwitchA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10 
# Set the priority of Switch A in VRRP group 1 to  120, which is higher than that of Switch B (110) 
and that of Switch C (100), so that Switch A can become the master. 
[SwitchA-Vlan-interface2] vrrp ipv6 vrid 1 priority 120 
# Configure Switch A to operate in preemptive mode so that it can become the master whenever 
it works normally; configure the preemption delay as five seconds to avoid frequent status 
switchover. 
[SwitchA-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode timer delay 5 
# Enable Switch A to send RA messages so that hosts on network segment 1::/64 can learn the 
default gateway address. 
[SwitchA-Vlan-interface2] undo ipv6 nd ra halt 
[SwitchA-Vlan-interface2]  quit 
# Create track entry 1 to associate with the physical  s t a t u s  o f  V L A N - i n t e r f a c e  3  o n  S w i t c h  A .  W h e n  
the track entry becomes negative, it  means that the interface fails.  
[SwitchA] track 1 interface vlan-interface 3 
# Configure VF tracking to monitor track entr y 1 and specify the value by which the weight 
decreases, making the weight of Switch A decrease by more than 245 (250 in this example) when 
track entry 1 turns to negative. In such a case, anot her router with a higher weight can take over.  
[SwitchA] interface vlan-interface 2 
[SwitchA-Vlan-interface2] vrrp ipv6 vrid 1 weight track 1 reduced 250 
2. Configure Switch B: 
# Configure VLAN 2. 
 system-view 
[SwitchB] vlan 2 
[SwitchB-vlan2] port gigabitethernet 1/0/5 
[SwitchB-vlan2] quit 
# Configure VRRP to operate in load balancing mode. 
[SwitchB] vrrp mode load-balance 
# Create VRRP group 1 and configure its vi rtual IPv6 addresses as FE80::10 and 1::10. 
[SwitchB] interface vlan-interface 2 
[SwitchB-Vlan-interface2] ipv6 address fe80::2 link-local 
[SwitchB-Vlan-interface2] ipv6 address 1::2 64 
[SwitchB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-loca\
l 
[SwitchB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10 
# Set the priority of Switch B in VRRP group 1 to 110, which is higher than that of Switch C (100) 
so that Switch B can become the master when Switch A fails. 
[SwitchB-Vlan-interface2] vrrp ipv6 vrid 1 priority 110 
# Set Switch B to operate in preemptive mode  and set the preemption delay to five seconds. 
[SwitchB-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode timer delay 5
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# Enable Switch B to send RA messages so that hosts on network segment 1::/64 can learn the 
default gateway address. 
[SwitchB-Vlan-interface2] undo ipv6 nd ra halt 
[SwitchB-Vlan-interface2]  quit 
# Create track entry 1 to associate with the physical s t a t u s  o f  V L A N - i n t e r f a c e  3  o n  S w i t c h  B .  W h e n  
the track entry becomes negative, it  means that the interface fails.  
[SwitchB] track 1 interface vlan-interface 3 
# Configure VF tracking to monitor track entr y 1 and specify the value by which the weight 
decreases, making the weight of Switch B decrea se by more than 245 (250 in this example) when 
track entry 1 turns to negative. In such a case, anot her router with a higher weight can take over.  
[SwitchB] interface vlan-interface 2 
[SwitchB-Vlan-interface2] vrrp ipv6 vrid 1 weight track 1 reduced 250 
3. Configure Switch C: 
# Configure VLAN 2. 
 system-view 
[SwitchC] vlan 2 
[SwitchC-vlan2] port gigabitethernet 1/0/5 
[SwitchC-vlan2] quit 
# Configure VRRP to operate in load balancing mode. 
[SwitchC] vrrp mode load-balance 
# Create VRRP group 1 and configure its vi rtual IPv6 addresses as FE80::10 and 1::10. 
[SwitchC] interface vlan-interface 2 
[SwitchC-Vlan-interface2] ipv6 address fe80::3 link-local 
[SwitchC-Vlan-interface2] ipv6 address 1::3 64 
[SwitchC-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-loca\
l 
[SwitchC-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10 
# Set Switch C to operate in preemptive mode  and set the preemption delay to five seconds. 
[SwitchC-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode timer delay 5 
# Enable Switch C to send RA messages, so that hosts on network segment 1::/64 can learn the 
default gateway address. 
[SwitchC-Vlan-interface2] undo ipv6 nd ra halt 
[SwitchC-Vlan-interface2]  quit 
# Create track entry 1 to associate with the physical  s t a t u s  o f  V L A N - i n t e r f a c e  3  o n  S w i t c h  C .  W h e n  
the track entry becomes negative, it  means that the interface fails.  
[SwitchC] track 1 interface vlan-interface 3 
# Configure VF tracking to monitor track entr y 1 and specify the value by which the weight 
decreases, making the weight of Switch C decrea se by more than 245 (250 in this example) when 
track entry 1 turns to negative. In such a case, anot her router with a higher weight can take over.  
[SwitchC] interface vlan-interface 2 
[SwitchC-Vlan-interface2] vrrp ipv6 vrid 1 weight track 1 reduced 250 
4. Verify the configuration: 
After the configuration, Host A can ping the extern al network. To verify the configuration, use the 
display ipv6 vrrp verbose  command. 
# Display the detailed information about VRRP group 1 on Switch A. 
[SwitchA-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information:
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     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Master 
     Config Pri     : 120             Running Pri  : 120 
     Preempt Mode   : Yes             Delay Time   : 5 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::1 (Local, Master) 
                      FE80::2 (Backup) 
                      FE80::3 (Backup) 
   Forwarder Information: 3 Forwarders 1 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 01 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4011 (Owner) 
     Owner ID       : 0000-5e01-1101 
     Priority       : 255 
     Active         : local 
    Forwarder 02 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4012 (Learnt) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 127 
     Active         : FE80::2 
    Forwarder 03 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4013 (Learnt) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 127 
     Active         : FE80::3 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
# Display the detailed information about VRRP group 1 on Switch B. 
[SwitchB-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Backup 
     Config Pri     : 110             Running Pri  : 110 
     Preempt Mode   : Yes             Delay Time   : 5
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     Become Master  : 2200ms left 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::2 (Local, Backup) 
                      FE80::1 (Master) 
                      FE80::3 (Backup) 
   Forwarder Information: 3 Forwarders 1 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 01 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4011 (Learnt) 
     Owner ID       : 0000-5e01-1101 
     Priority       : 127 
     Active         : FE80::1 
    Forwarder 02 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4012 (Owner) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 255 
     Active         : local 
    Forwarder 03 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4013 (Learnt) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 127 
     Active         : FE80::3 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
# Display the detailed information about VRRP group 1 on Switch C. 
[SwitchC-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Backup 
     Config Pri     : 100             Running Pri  : 100 
     Preempt Mode   : Yes             Delay Time   : 5 
     Become Master  : 4200ms left 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::3 (Local, Backup) 
                      FE80::1 (Master) 
                      FE80::2 (Backup)
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   Forwarder Information: 3 Forwarders 1 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 01 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4011 (Learnt) 
     Owner ID       : 0000-5e01-1101 
     Priority       : 127 
     Active         : FE80::1 
    Forwarder 02 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4012 (Learnt) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 127 
     Active         : FE80::2 
    Forwarder 03 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4013 (Owner) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 255 
     Active         : local 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
The output shows that in VRRP group 1, Switch A is the master and Switch B and Switch C are the 
backups. Each switch has one AVF and two LVFs acting as the backups. 
# When VLAN interface 3 on Switch A fails, use the  display vrrp ipv6 verbose command to 
display the detailed information about VRRP group 1 on Switch A. 
[SwitchA-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Master 
     Config Pri     : 120             Running Pri  : 120 
     Preempt Mode   : Yes             Delay Time   : 5 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::1 (Local, Master) 
                      FE80::2 (Backup) 
                      FE80::3 (Backup) 
   Forwarder Information: 3 Forwarders 0 Active 
     Config Weight  : 255 
     Running Weight : 5 
    Forwarder 01 
     State          : Initialize
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     Virtual MAC    : 000f-e2ff-4011 (Owner) 
     Owner ID       : 0000-5e01-1101 
     Priority       : 0 
     Active         : FE80::3 
    Forwarder 02 
     State          : Initialize 
     Virtual MAC    : 000f-e2ff-4012 (Learnt) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 0 
     Active         : FE80::2 
    Forwarder 03 
     State          : Initialize 
     Virtual MAC    : 000f-e2ff-4013 (Learnt) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 0 
     Active         : FE80::3 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Negative       Weight Reduc\
ed : 250 
# Use the display vrrp ipv6 verbose  command to display the detailed information about VRRP 
group 1 on Switch C. 
[SwitchC-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Backup 
     Config Pri     : 100             Running Pri  : 100 
     Preempt Mode   : Yes             Delay Time   : 5 
     Become Master  : 4200ms left 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::3 (Local, Backup) 
                      FE80::1 (Master) 
                      FE80::2 (Backup) 
   Forwarder Information: 3 Forwarders 2 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 01 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4011 (Take Over) 
     Owner ID       : 0000-5e01-1101 
     Priority       : 85 
     Active         : local 
     Redirect Time  : 93 secs 
     Time-out Time  : 1293 secs
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    Forwarder 02 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4012 (Learnt) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 85 
     Active         : FE80::2 
    Forwarder 03 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4013 (Owner) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 255 
     Active         : local 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
The output shows that when VLAN interface 3 on Switch A fails, the weight of the\
 AVF on Switch 
A decreases to 5, which is lower than the lower limit of failure. All VFs on Switch A turn to 
initialized state and cannot be used for packet forwarding. The VF corresponding to MAC address 
000f-e2ff-4011 on Switch C becomes the AVF, an d Switch C takes over Switch A for packet 
forwarding.
 
# When the timeout timer (about 1800 seconds) ex pires, display the detailed information about 
VRRP group 1 on Switch C. 
[SwitchC-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Backup 
     Config Pri     : 100             Running Pri  : 100 
     Preempt Mode   : Yes             Delay Time   : 5 
     Become Master  : 4200ms left 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::3 (Local, Backup) 
                      FE80::1 (Master) 
                      FE80::2 (Backup) 
   Forwarder Information: 2 Forwarders 1 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 02 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4012 (Learnt) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 127 
     Active         : FE80::2 
    Forwarder 03
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     State          : Active 
     Virtual MAC    : 000f-e2ff-4013 (Owner) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 255 
     Active         : local 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
The output shows that when the timeout timer expires, the VF corresponding to virtual MAC 
address 000f-e2ff-4011 is remove d, and does not forward the packets destined for the MAC 
address any more.
 
# When Switch A fails, use the  display vrrp ipv6 verbose command to display the detailed 
information about VRRP group 1 on Switch B. 
[SwitchB-Vlan-interface2] display vrrp ipv6 verbose 
 IPv6 Standby Information: 
     Run Mode       : Load Balance 
     Run Method     : Virtual MAC 
 Total number of virtual routers : 1 
   Interface Vlan-interface2 
     VRID           : 1               Adver Timer  : 100 
     Admin Status   : Up              State        : Master 
     Config Pri     : 110             Running Pri  : 110 
     Preempt Mode   : Yes             Delay Time   : 5 
     Auth Type      : None 
     Virtual IP     : FE80::10 
                      1::10 
     Member IP List : FE80::2 (Local, Master) 
                      FE80::3 (Backup) 
   Forwarder Information: 2 Forwarders 1 Active 
     Config Weight  : 255 
     Running Weight : 255 
    Forwarder 02 
     State          : Active 
     Virtual MAC    : 000f-e2ff-4012 (Owner) 
     Owner ID       : 0000-5e01-1103 
     Priority       : 255 
     Active         : local 
    Forwarder 03 
     State          : Listening 
     Virtual MAC    : 000f-e2ff-4013 (Learnt) 
     Owner ID       : 0000-5e01-1105 
     Priority       : 127 
     Active         : FE80::3 
   Forwarder Weight Track Information: 
     Track Object   : 1              State : Positive       Weight Reduc\
ed : 250 
The output shows that when Switch A fails, Swit ch B becomes the master because its priority is 
higher than that of Switch C.
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Troubleshooting VRRP 
The screen frequently displays error prompts. 
Analysis 
This error is probably caused by: 
•  Inconsistent configuration of the devices in the VRRP group. 
•   A device is attempting to se nd illegitimate VRRP packets. 
Solution 
•  In the first case, modify the configuration. 
•   In the latter case, resort to non-technical measures. 
Multiple masters are present in the same VRRP group. 
Analysis 
•  Multiple masters coexist for a short period: This  is normal and requires no manual intervention. 
•   Multiple masters coexist for a long period: This is  because devices in the VRRP group cannot receive 
VRRP packets, or the received VRRP packets are illegal.  
Solution 
Ping between these masters, and do the following: 
•   If the ping fails, check network connectivity.  
•   If the ping succeeds, check that their configurations are consistent in terms of number of virtual IP 
addresses, virtual IP addresses, advertisement interval, and authentication. 
Frequent VRRP state transition. 
Analysis 
The VRRP advertisement interval is set too short.  
Solution 
Increase the interval to sent VRRP advertisement or introduce a preemption delay.
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