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Random Connectivity Failures Using Ping To Virtual IP Address On VM Running Avaya Breeze Host

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TitleRandom Connectivity Failures Using Ping To Virtual IP Address On VM Running Avaya Breeze Host
Symptoms
  • Pings randomly fail to one virtual ip address configured on host Avaya Breeze cluster running on VM
  • No application or service level impact
  • VSP switches connected in vIST have same MAC address for host
VSP-1:1#show vlan mac-address-entry
====================================================================================================
                                    Vlan Fdb
====================================================================================================
VLAN            MAC                                   SMLT
ID   STATUS     ADDRESS            INTERFACE          REMOTE   TUNNEL
----------------------------------------------------------------------------------------------------
2011 learned    00:50:56:92:02:d6  Port-1/6           false    -           

VSP-2:1#show vlan mac-address-entry
====================================================================================================
                                    Vlan Fdb
====================================================================================================
VLAN            MAC                                   SMLT
ID   STATUS     ADDRESS            INTERFACE          REMOTE   TUNNEL
----------------------------------------------------------------------------------------------------
2011 learned    00:50:56:92:02:d6  MLT-64             true     VSP-1
 
  • Same VSP switches have different MAC address for same host in ARP cache
VSP-1:1#show ip arp

==========================================================================================
                                  IP Arp - GlobalRouter
==========================================================================================
IP_ADDRESS      MAC_ADDRESS        VLAN  PORT                 TYPE    TTL(10 Sec) TUNNEL
------------------------------------------------------------------------------------------
10.xx.yyy.70    00:50:56:92:02:d6  2011  1/6                  DYNAMIC 1253

VSP-2:1#show ip arp

==========================================================================================
                                  IP Arp - GlobalRouter
==========================================================================================
IP_ADDRESS      MAC_ADDRESS        VLAN  PORT                 TYPE    TTL(10 Sec) TUNNEL
------------------------------------------------------------------------------------------
10.xx.yyy.70    00:50:56:92:c8:19  2011  MLT-64               DYNAMIC 1363        VSP-1

 
Environment
  • VSP 7200
  • Release 7.1.0.0
  • Avaya Breeze application running on VM in clustered environment
Cause
Software defect VSP4000-239
Resolution
Upgrade to VOSS 7.1.1.0
Additional notes
Issue specific to Gratuitous ARP (GARP) packet sent by Breeze application using target MAC as broadcast address as opposed to unicast MAC address

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