I'm trying to setup IOS SLB in directed mode on a Cat6506. We are currently using IOS SLB is dispatched mode for other services. Below is the relevent config. Please note there is no L3 interface on the 6506 for the Virtual Servers network (10.0.131.160). The gateway is an ASA which has L2 connectivity to the 6506. Also to note that the Server Farm network is within its own VRF.
ip slb serverfarm ADOBE-CONNECT
ip slb vserver ADOBE-TCP443
virtual 10.0.131.160 tcp https
ip slb vserver ADOBE-TCP80
virtual 10.0.131.160 tcp www
What happens is essentially nothing as you can see below 0 connections have occured, and 0 syns. "debug ip slb all" shows absolutely nothing in regards to this VServer.
ADOBE-TCP80, state = OPERATIONAL, v_index = 19, interface(s) = <any>
virtual = 10.0.131.160/32:80, TCP, service = NONE, advertise = TRUE
server farm = ADOBE-CONNECT, delay = 10, idle = 600
sticky: client ip, timer = 60, subnet = 255.255.255.255
sticky: group id = 4098 <assigned>
synguard counter = 0, synguard period = 0
conns = 0, total conns = 23, syns = 0, syn drops = 0
standby group = None
However on the 6506 when I do a SPAN on the trunk interface between the 6506 and the ASA I can see the packet TCP SYNs arriving at the 6506. Where ever they go from there..... I have no clue. This SPAN/packet capture also shows the ARP requests from the ASA for the virtual IP address, however there is never a response.