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LAAUDI_53196's avatar
LAAUDI_53196
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Oct 31, 2011

ARP Failure on LTM

Hello,     I ain't a master but if you find this silly, please forgive me.       BIG IP <-> Internal VLAN <-> Cisco SW's <-> Servers       We have multiple Self IP's created for ...
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LAAUDI_53196's avatar
LAAUDI_53196
Icon for Nimbostratus rankNimbostratus
Nov 01, 2011
Correct, Nitass,

 

outside network <-> LB <-> Inside Network ( Cisco L2 sw stack ) - cisco blade sw's <-> Blade Servers

 

 

We have NAT (destination) enabled but SNAT is disabled on F5.

 

Sometimes, I find the arp entry in INCOMPLETE state and sometimes I find the ARP entry. It's so intermittent. Server guy replaced the NIC as well but still the same. Do you think SNAT Automap would do any help? Also, please note that we have BladeServer NIC's teamed using Smart Load Balancing so we learn two mac-addresses for one single IP.