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Please refer to earlier posts on the meaning of this, especially the Router (Data) one.
With the above in mind, let’s check if our VCS fabric’s Virtual IP (1.100) can reach the Controllers (1.150–152).
The result of sending an email to a badly formatted email address would be the same: it’ll get bounced. If you really want to do checking of email addresses right on the signup page, include a confirmation field so they have to type it twice.
If your user enters a bad email address, they won’t get the activation email and they’ll try to register again if they really care about using your site. Enterprising individuals will just copy and paste, but what it comes down to is this: if your user enters a bad email address, you shouldn’t make it more of a problem for yourself than you have to.
This titbit will become relevant when figuring out why your Management/Control plane may not be working at a later stage, since VCS talks to NSX Controllers from this IP, and thus things like OVSDB would also be handled on the Associated rbridge.
If you actually check the Google query I linked above, people have been writing (or trying to write) RFC-compliant regular expressions to parse email addresses for years.But what if I told you there were a way to determine whether or not an email is valid without resorting to regular expressions at all? The activation email is a practice that’s been in use for years, but it’s often paired with complex validations that the email is formatted correctly.It’s surprisingly easy, and you’re probably already doing it anyway. If you’re going to send an activation email to users, why bother using a gigantic regular expression?SSH into the VCS Virtual IP (which will connect us to the rbridge that is “Associated” with it), and run the following ping command: VDX6740-101# ping 1.150 vrf mgmt-vrf src-addr 1.100 Type Control-c to abort PING 1.150 (1.150) from 1.100: 56 data bytes 64 bytes from 1.150: icmp_seq=0 ttl=63 time=0.946 ms 64 bytes from 1.150: icmp_seq=1 ttl=63 time=0.523 ms 64 bytes from 1.150: icmp_seq=2 ttl=63 time=0.457 ms 64 bytes from 1.150: icmp_seq=3 ttl=63 time=0.564 ms 64 bytes from 1.150: icmp_seq=4 ttl=63 time=2.745 ms --- 1.150 ping statistics --- 5 packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.457/1.047/2.745/0.866 ms Ok, we can reach one of the Controllers, which means that our IP connectivity is working.For extra credit, let’s see what happens if we try to do the same from an rbridge other than the “associated” one: VDX6740-102# sh vcs virtual-ip Virtual IP : 1.100/24 Associated rbridge-id : 101 Oper-Status : up VDX6740-102# ping 1.150 vrf mgmt-vrf src-addr 1.100 Type Control-c to abort bind source address:: Cannot assign requested address Yip, no worky (we tried from 102, while the Associated one is 101).