Reading my Directed ARP and ICMP Redirects blog post you might have wondered “how did Directed ARP ever get into ***redacted***?”
I searched for “directed ARP cisco” and found this gem, which really talks about unicast ARP behavior, an ancient mechanism documented in RFC 1122 (it’s not my Google-Fu, I got the reference to RFC 1122 in this blog post).
Read more ...Trials are occurring now and OS will be available this summer.
AT&T is starting to see benefits from Domain 2.0.
So this is the fourth blog on EVPN, the previous blogs covered the following topics:
This post will cover the ability of EVPN to provide all-active multi-homing for layer-2 traffic, where the topology contains two different active PE routers, connecting to a switch via a LAG, the setup is similar to the previous labs. Due to some restrictions and in the interests of simplicity, this lab will cover all-active multi-homing for a single VLAN only, (VLAN 100 in this case) consider the network topology:
The topology and general connectivity is the same as the other previous examples, the two big differences are that only VLAN 100 is present here and the connectivity between MX-1 and MX-2 is now using MC-LAG.
The first consideration that needs to be made when running EVPN in all-active mode, is that it must connect to the upstream devices using some sort of LAG, or MC-LAG – consider the wording from the RFC 7432:
https://tools.ietf.org/html/rfc7432#section-14.1.2
IT skills are becoming more demanding.
I'm back to installing servers/network in closets. Do we need data centers anymore ?
The post Upgrade Your Data Centre To A Closet appeared first on EtherealMind.
It builds on Docker Hub.