6500 with SLB blade dropped the packets from HA device.
A weird behavior observed in 6500 with SLB blade. the topology is as below:
client--HA---6500 with SLB----server farm
The first Syn packet reached the 6500 with client MAC address as source MAC and can be forwarded to the server correctly. But due to HA vendor special behavior, the second Syn packet's source MAC is rewritten to HA device MAC address and this Syn is dropped by the 6500.
Is this a special feature for 6500? And is it possible to change this behavior?
Re: 6500 with SLB blade dropped the packets from HA device.
Thanks for your reply.
1, HA device is from other vendor. It works as transparent mode and the session will be processed by 2 blades in the round-robin schedule.
The first SYN is processed by the master and reach the 6500 with client MAC as the source MAC. the second SYN is processed by the slave and the source MAC is rewritten to the slave's interface mac. This SYN packet is dropped by either 6500 or CSM, not quite sure.
2, The image on the 6500 is as below:
Cisco Internetwork Operating System Software
IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(17d)SXB10, RELEASE SOFTWARE (fc1)
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