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Switch Not Learning ARP of NLB Cluster Virtual IP When Using NLB-Multicast Mode

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TitleSwitch Not Learning ARP of NLB Cluster Virtual IP When Using NLB-Multicast Mode
Symptoms
  • Switch does not learn ARP of NLB cluster virtual ip address when nlb-mode configured to multicast under vlan interface
vlan create 100 type port-mstprstp 0 
vlan mlt 100 103
vlan members 100 1/3 portmember
vlan i-sid 100 100
interface Vlan 100
ip address 10.10.10.1 255.255.255.0
nlb-mode multicast >>>>>>>>>>>>>>>>>>>> NLB mode

NLB Cluster VIP: 10.10.10.100 
NLB Dedicated IP : 10.10.10.101

VOSS 7.1.1.0
========

VSP7254:1(config)#show ip arp

==========================================================================================
IP Arp - GlobalRouter
==========================================================================================
IP_ADDRESS MAC_ADDRESS VLAN PORT TYPE TTL(10 Sec) TUNNEL 
------------------------------------------------------------------------------------------
10.10.10.1 10:cd:ae:ac:3d:35 316 - LOCAL 2160 
10.10.10.101 00:50:56:b2:93:06 316 1/3 DYNAMIC 2160 >> NLB Dedicated IP
10.10.10.255 ff:ff:ff:ff:ff:ff 316 - LOCAL 2160 
10.255.255.1 00:00:00:00:00:01 - - LOCAL 2160


VOSS 6.1.6 and earlier
========

VSP7254:1(config)#show ip arp

==========================================================================================
IP Arp - GlobalRouter
==========================================================================================
IP_ADDRESS MAC_ADDRESS VLAN PORT TYPE TTL(10 Sec) TUNNEL 
------------------------------------------------------------------------------------------
10.10.10.1 10:cd:ae:ac:3d:35 316 - LOCAL 2160 
10.10.10.100 03:bf:0a:1f:06:64 316 - DYNAMIC 2157 >>> NLB Cluster VIP
10.10.10.101 00:50:56:b2:93:06 316 1/3 DYNAMIC 2158  >> NLB Dedicated IP
10.10.10.255 ff:ff:ff:ff:ff:ff 316 - LOCAL 2160 
10.255.255.1 00:00:00:00:00:01 - - LOCAL 2160

 
Environment
VSP 7200
VOSS 7.1.1.0
Cause
Software defect VOSS-12835
Resolution
Upgrade to VOSS release 7.1.2.0
Additional notes

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