Re: [Zenloadbalancer-support] Question about network interfaces

[Jose Manuel Blanco]

Hi. As I've said the configuration appears to be OK so...no errors in the webgui. Problem is that if try some basic connectivity tests over an interface (pings, simulate connections using telnet) they fail. If I remove another interface (not involved in the tests), then the same connectivity tests give the expected results (connectivity ok). Anyway, at this moment I can't reproduce the problem cause we are using the test machine to try some other configurations. The problem is more a limitation than a problem, cause limitate us the number of farms/services a ZENLB instance can serve. Regards. Jose Manuel Blanco Cortiñas Analista de Sistemas - Servicio de las Tecnologias de la Informacion y Comunicaciones (STIC) Universidad de Valladolid Edificio Alfonso VIII, C/Real de Burgos s/n. 47011, Valladolid - ESPAÑA Telefono: 983 18-6410, Fax: 983 423271 E-mail: josemanuel.blanco.corti...@uva.es El 03/06/13 13:37, Emilio Campos escribió: Attach us a screenshot with the webgui error that you are talking about and attach us the mii-tool output here. Regards 2013/6/3 Jose Manuel Blanco <josemanuel.blanco.corti...@uva.es> Hi. We need several interfaces basically cause we are using separate networks for admin, public access from users and private access to backend servers. With this configuratino we need THREE interfaces. And if we want to loabalance several applications with the same ZENLB instance...we need TWO additional interfaces (1 for clients public access and 1 for backend access) per application. Regards. Jose Manuel Blanco Cortiñas Analista de Sistemas - Servicio de las Tecnologias de la Informacion y Comunicaciones (STIC) Universidad de Valladolid Edificio Alfonso VIII, C/Real de Burgos s/n. 47011, Valladolid - ESPAÑA Telefono: 983 18-6410, Fax: 983 423271 E-mail: josemanuel.blanco.corti...@uva.es El 03/06/13 12:07, Nick Furnell escribió: Hi Jose   Why would you assign so many NIC's to the virtual machine - or was this some sort of capacity/stress test?  We have run successfully with just one NIC for 18 months (right from the beginning).  I understand the use of 2, possibly even 3 if you had a dedicated management vSwitch.   Is the issue the underlying Linux build?   Thanks       Nick Furnell Senior Systems Engineer 192 Altrincham Road, Manchester, M22 4RZ  Tel: 0161 495 2426 | Mobile: 07919 53 66 71   >>> "Jose Manuel Blanco" <josemanuel.blanco.corti...@uva.es> 03/06/2013 07:40 >>> Hi. I've installed ZENLB in a vmware virtual machine. As I'm using this to do some testings it has multiple network interfaces. I've observed that if the number of network interfaces is 6-7 or greater, the behavior of the interfaces is "strange" (i.e: everything appears to be ok in ZENLB but they are no connectivity in some interfaces). * deleting some interfaces in the ZENLB virtual machine cause everything to run OK again. They are some limitation in the number of interfaces that ZENLB can manage? Some additional info: - I'm using the latest community version of ZENLB (v3.0.2) - I've defined the interfaces as VMXNET3 type - The vmware limit on maximum number network interfaces per VM (10 in vsphere 5) is not reached - The VM is defined with 1 vCPU and 1GB RAM memory Regards. -- Jose Manuel Blanco Cortiñas Analista de Sistemas - Servicio de las Tecnologias de la Informacion y Comunicaciones (STIC) Universidad de Valladolid Edificio Alfonso VIII, C/Real de Burgos s/n. 47011, Valladolid - ESPAÑA Telefono: 983 18-6410, Fax: 983 423271 E-mail: josemanuel.blanco.corti...@uva.es Transform Medical Group(CS) Ltd. is registered in England and Wales, number 3228476. The registered office is at 192 Altrincham Road, Manchester, M22 4RZ. Tel. 0161 495 2400 The information contained in this electronic message and any attachments (the "Message") is intended for one or more specific individuals or entities, and may be confidential, proprietary, privileged or otherwise protected by law. 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