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MR_Freddy_31338's avatar
MR_Freddy_31338
Icon for Nimbostratus rankNimbostratus
Nov 28, 2017

MAC address of Floating IP address /Self IP address

If I use SNAT automap with HA devices, so Floating IP address will connect with backend servers .. can I know the MAC address of Floating IP address ?

 

The same if I use SNAT automap with standalone device, the Self IP will connect with backend servers, can i know mac address of self IP address ?

 

application delivery
LTM
  • Samir_Jha_52506's avatar
    Samir_Jha_52506
    Icon for Noctilucent rankNoctilucent
    Nov 28, 2017

    Please Capture the packet on HA pair & standalone device with tcpdump & find the MAC address. Hope it will work for you. Paste the question you have any.

     

  • nemas_341981's avatar
    nemas_341981
    Icon for Nimbostratus rankNimbostratus
    Nov 28, 2017

    If you have mac-masquerade configured, it will use the mac assigned to the floating self-IP's traffic group: tmsh list cm traffic-group traffic-group-1 mac

     

    Otherwise, it should take on the mac-address associated with its vlan:

     

    tmsh show net self (name of floating-ip)

     

    If neither of those work for you, go to a device in the same subnet as the floating self-IP (such as the standby F5 if you have an HA pair), ping the floating IP, and look at your ARP table. F5 commands for those tasks:

     

    tmsh run util ping (floating-ip)

     

    tmsh show net arp | grep (floating-ip)

     

    SOL14513: MAC address assignment for interfaces, trunks, and VLANs (11.x) - https://support.f5.com/kb/en-us/solutions/public/14000/500/sol14513.html