03-17-2004 07:07 AM
hello,
I've setup a CSS115001 for load balancing two web servers. I am using just the basic L3 rule for load balancing and noticed that every so often I get this error:-
"MAR 17 10:00:56 1/1 29 IPV4-4: Duplicate IP address detected for vip: 65.214.xx.xx 00-03-6b-f7-3c-e1"
At first I thought maybe I had another device on the LAN that had that ip address but no. I changed the vip address in the content rule but I get the same error with the new IP address. Any ideas?
- Trevor
03-17-2004 07:58 AM
Hi Trevor,
do you have redundancy in regards of the physical connections towards the next Layer2/3 Switches?
If yes, are both physical ports of the CSS assigned to the same vlan?
Regards,
Joerg
03-17-2004 08:11 AM
No there is no redundancy configuration.
This is what the setup looks like. We have the third port connected to the host provider's line.
!************************* INTERFACE *************************
interface e1
bridge vlan 2
description "**** Physical connection to 10.10.0.0/24 ****"
interface e2
description "**** Physical connection to 10.10.0.0/24 ****"
bridge vlan 2
interface e3
description "**** Physical connection to 65.214.57.0/24 ****"
phy 10Mbits-FD
!************************** CIRCUIT **************************
circuit VLAN1
ip address 65.214.57.xx 255.255.255.0
circuit VLAN2
ip address 10.10.0.3 255.255.255.0
!************************** SERVICE **************************
service HPServer1
ip address 10.10.0.1
active
service HPServer2
ip address 10.10.0.2
active
service Web_server1
keepalive type http
keepalive method get
keepalive uri "/"
port 80
ip address 10.10.0.1
active
service Web_server2
ip address 10.10.0.2
keepalive type http
keepalive method get
keepalive uri "/"
port 80
protocol tcp
active
!*************************** OWNER ***************************
owner L3_Owner
content L3_Rule
add service HPServer1
add service HPServer2
balance aca
vip address 65.214.57.18
active
!*************************** GROUP ***************************
group dns
add service HPServer1
add service HPServer2
vip address 65.214.57.18
active
03-17-2004 08:23 AM
Also, is this the best way to load balance 2 servers that are used for both Web and DNS?
Reason for asking is that this morning when I configured the CSS to go live, it went fine for a few minutes then crashed hard. I figured the default layer3 balancing would be fine. It went fine for testing so I'm at a loss why it crashed. It also reported this error:
"MAR 17 09:56:49 1/1 27 NETMAN-4: SNMPAPI:SNMPAPI_Set:SET failure"
03-17-2004 09:10 AM
Okay I believe I've fixed the duplicate ip message. We have a Pix Firewall connected to a port on the CSS and the global config ip range overlapped the VIP ip address used on the CSS itself.
Now this is fixed, would this have caused the CSS to crash?
03-17-2004 09:54 AM
this would not have cause a crash normally.
But it was not good anyway :-)
Gilles.
03-17-2004 02:03 PM
But what about the config that I have for layer3 load balance? That should not have caused a crash either? We have about 180-200requests a second to the web servers so I presume the CSS would not have a problem with that?
- Trevor
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide