Question about vMAC on the DLR LIF

Hello

Based on the design of NSX Guide: "every LIF has assigned an IP address, which represents the default IP for the logical segment L2 bridge, it connects to a vMAC address. The IP address is obviously unique by LIF, then that same VMAC is attributed to all LIF defined"

This test in the HOL laboratories, I started a ping from 172.16.10.11-> 172.16.20.11.  I configured a mirror port with source such as app-sr-01 a (172.16.20.11) (not available on servers web/app HOL tcpdump!). Looking at the MAC addresses on the package 'in' GRE encapsulated packet (see below cliché) I have a few questions:

1. whence the source MAC on the 00:50:56:f1:f7:a2 of ICMP request packets? What cli command would show this MAC address?

2. If each LIF must have the same vMAC, "arp - a" output on the corresponding servers shows different MACs for 10.1 and 20.1 LIF.  Is this expected or a Nested lab thing or did I miss something?

vmac-question.png

1 MAC SRC in the query is almost certainly a pMAC for the ESXi server where the web-sv-01 has. You should be able to see in "net-vdr - C-l" running on this host.

2. "arp - a" output for your web-sv-01 a don't look right, you should see VMAC (02:50:56:56:44:52) for all DLR LIF. What version of NSX do you use?

Tags: VMware

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