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Junaid_Subhani_'s avatar
Junaid_Subhani_
Icon for Nimbostratus rankNimbostratus
Jan 23, 2015

Unable to connect multiple networks

Hi all,

 

I downloaded the trial VM for F5 LTM load balancer and ran it in my vCloud environment. eth0 is able to get an IP from the corporate network using DHCP.

 

The issue is that when I try to attach eth1 OR eth2 to a virtual network, it is unable to connect. The interface shows UP, I assign an IP statically but I am unable to ping any other node.

 

Does anyone know why is this the case ? I need to connect the internal and external network to interfaces eth1 and eth2 respectively while eth0 is for management.

 

BR, Junaid

 

availability
deployment
design
management
virtualization
  • Brad_Parker_139's avatar
    Brad_Parker_139
    Jan 23, 2015

    eth0 is going to be the management interface, which by default is un-tagged and can use DHCP. eth1 and eth2 are going to be traffic interfaces. To assign a self IP to a traffic interface it needs to be associated with a VLAN either un-tagged or tagged. You can create VLANs, assign interfaces to them, and create self IPs either from tmsh or the GUI. Self IPs are created in VLANs and VLANs are assigned to interfaces. It sounds like in your case you want one selfIP assigned to each interface and each virtual interface is in a different port group in vCloud. In this case, you will create a VLAN named "Internal" and assign eth1 to that VLAN un-tagged. You will then also, create a VLAN named "External" and assign eth2 to that VLAN un-tagged. The you can create you selfIPs for each of the VLANs. All of this should be able to be done in tmsh via "create net ..." https://support.f5.com/kb/en-us/solutions/public/14000/900/sol14961.html

     

  • Junaid_Subhani_'s avatar
    Junaid_Subhani_
    Icon for Nimbostratus rankNimbostratus
    Jan 23, 2015

    Hi Brad,

     

    By assigning VLAN, do you mean doing it using the web interface ?

     

    I am trying to assign IP addresses manually using the OS and testing connectivity to the internal and external networks (ping them) before I even login using the web interface!

     

    .

     

  • Brad_Parker_139's avatar
    Brad_Parker_139
    Icon for Nacreous rankNacreous
    Jan 23, 2015

    eth0 is going to be the management interface, which by default is un-tagged and can use DHCP. eth1 and eth2 are going to be traffic interfaces. To assign a self IP to a traffic interface it needs to be associated with a VLAN either un-tagged or tagged. You can create VLANs, assign interfaces to them, and create self IPs either from tmsh or the GUI. Self IPs are created in VLANs and VLANs are assigned to interfaces. It sounds like in your case you want one selfIP assigned to each interface and each virtual interface is in a different port group in vCloud. In this case, you will create a VLAN named "Internal" and assign eth1 to that VLAN un-tagged. You will then also, create a VLAN named "External" and assign eth2 to that VLAN un-tagged. The you can create you selfIPs for each of the VLANs. All of this should be able to be done in tmsh via "create net ..." https://support.f5.com/kb/en-us/solutions/public/14000/900/sol14961.html

     

    • Junaid_Subhani_'s avatar
      Junaid_Subhani_
      Icon for Nimbostratus rankNimbostratus
      Jan 23, 2015
      Thank You Brad Ok so here is what I did: Using cli in tmsh mode: create net vlan internal interfaces add { 1.1 } eth1 for internal traffic create net vlan external interfaces add { 1.2 } eth2 for external traffic Using Web Console: Goto Netwrok -> Self IPs -> Create Name: Internal IP Address: 10.1.1.1 Netmask: 255.255.255.0 VLAN: internal the one I made above --Update-- Name: External IP Address: 12.1.1.1 Netmask: 255.255.255.0 VLAN: external the one I made above --Update-- Should this be enough to set the IPs on the interfaces on the load balancer ? BR, Junaid
    • Brad_Parker_139's avatar
      Brad_Parker_139
      Icon for Nacreous rankNacreous
      Jan 23, 2015
      Yep, that should give you basic layer 2 connectivity in those two subnets. Now if you want basic "routing" through the LTM from the internal VLAN to the outside world you will need a default route and a wildcard Forwarding IP virtual server(0.0.0.0:0) and possibly a SNAT configuration on that if your network requires it. That should do it for the basic connectivity. https://support.f5.com/kb/en-us/solutions/public/7000/500/sol7595.html
  • Brad_Parker's avatar
    Brad_Parker
    Icon for Cirrus rankCirrus
    Jan 23, 2015

    eth0 is going to be the management interface, which by default is un-tagged and can use DHCP. eth1 and eth2 are going to be traffic interfaces. To assign a self IP to a traffic interface it needs to be associated with a VLAN either un-tagged or tagged. You can create VLANs, assign interfaces to them, and create self IPs either from tmsh or the GUI. Self IPs are created in VLANs and VLANs are assigned to interfaces. It sounds like in your case you want one selfIP assigned to each interface and each virtual interface is in a different port group in vCloud. In this case, you will create a VLAN named "Internal" and assign eth1 to that VLAN un-tagged. You will then also, create a VLAN named "External" and assign eth2 to that VLAN un-tagged. The you can create you selfIPs for each of the VLANs. All of this should be able to be done in tmsh via "create net ..." https://support.f5.com/kb/en-us/solutions/public/14000/900/sol14961.html

     

    • Junaid_Subhani_'s avatar
      Junaid_Subhani_
      Icon for Nimbostratus rankNimbostratus
      Jan 23, 2015
      Thank You Brad Ok so here is what I did: Using cli in tmsh mode: create net vlan internal interfaces add { 1.1 } eth1 for internal traffic create net vlan external interfaces add { 1.2 } eth2 for external traffic Using Web Console: Goto Netwrok -> Self IPs -> Create Name: Internal IP Address: 10.1.1.1 Netmask: 255.255.255.0 VLAN: internal the one I made above --Update-- Name: External IP Address: 12.1.1.1 Netmask: 255.255.255.0 VLAN: external the one I made above --Update-- Should this be enough to set the IPs on the interfaces on the load balancer ? BR, Junaid
    • Brad_Parker's avatar
      Brad_Parker
      Icon for Cirrus rankCirrus
      Jan 23, 2015
      Yep, that should give you basic layer 2 connectivity in those two subnets. Now if you want basic "routing" through the LTM from the internal VLAN to the outside world you will need a default route and a wildcard Forwarding IP virtual server(0.0.0.0:0) and possibly a SNAT configuration on that if your network requires it. That should do it for the basic connectivity. https://support.f5.com/kb/en-us/solutions/public/7000/500/sol7595.html