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ACE connection refused but not when accesing directly the server

Update:10-11Source: network consolidation
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Hello,
I am facing the following problem when I try to load a specific webpage using the VIP:
If I skip the load balancer and hitting the real server, then the page is correctly loaded:
I capture traffic and I saw that the VIP sends a 400 http error to both real server and to my laptop IP (10.160.8.73)
Has someone any idea why this is happening?
Thanks in advance
Ion

The Best Answer

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Hi,
This may help you:
The ACE's tengig port is always /1.
Let's say your ACE is in slot 3. It's backplane interface would then be
Te3/1. You then use
the monitor command to configure the source (SPAN) port to this interface.
monitor session 1 source interface TenGigabitEthernet 3/1 both
monitor session 1 destination interface GigabitEthernet x/y
monitor session 1 filter vlan 510 - 511 , 640 , 652 - 656        <---- Line
is optional and will capture only specified VLANs
Configure the destination (SPAN) port as a trunk port so that the VLAN IDs
will be preserved:
interface Gix/y
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
Be sure that the network analyzer connected to the destination port can
monitor VLAN tags
(a trunked port). Here is a link on how to configure NICs using some of the
Intel chipsets to
pass the VLAN tagging info:
http://support.intel.com/support/network/sb/CS-005897.htm
Wireshark has posted this info, as well as how to configure NICs with the
Broadcom chipset:
http://wiki.wireshark.org/CaptureSetup/VLAN#head-e0dc0f9fe0cc6b1b1866d78da7b97ead34dca1d8
With IOS Release 12.2(18)SXD and later releases, when a destination port is
a trunk, you can
use the list of VLANs allowed on the trunk to filter the traffic transmitted
from the
destination port.  This should not be necessary if you configured the
optional 'filter' line
in the monitor session configuration.
interface Gix/y
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 102, 103
switchport mode trunk
switchport nonegotiate
For additional information, see:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/span.html#wp1036881
http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612.shtml#topic6
Cesar R
ANS Team