Now you can also download my VXLAN book from the Leanpub.com
"Virtual Extensible LAN VXLAN - A Practical guide to VXLAN Solution Part 1. (373 pages)
This chapter
introduces the standard based EVPN ESI Multi-homing
solution in BGP EVPN VXLAN Fabric. It starts
by explaining the mechanism of how CE
device (Access switch or host) can be attached to two or more independent PE
devices (Leaf switches) by using Port-Channel. This section discusses the concept
of Ethernet Segment and Port-Channel. Next, this chapter
explains how the BGP EVPN Route-Type 4 (Ethernet
Segment Route) is for creating the redundancy group between the switches
that share the ES. This section introduces
the BGP EVPN Route-Type 4 NLRI address format. In addition, this chapter shows how switches belonging to the same redundancy group selects the Designated
Forwarder (DF) for BUM traffic among themselves. Also, this chapter introduces
the VLAN Consistency Check by using Cisco
Fabric Service over IP (CFSoIP). The last two sections explain the Layer 2 Gateway Spanning-Tree (L2G-STP) mechanism
and Core-Link Tracking system.
Part II
introduces the BGP EVPN Route-Type 1 (Ethernet Auto-Discovery) and how it is
used for convergence. Part III discusses the data flows between the hosts in normal
and failure situation. Part II and III will be published later.
Figure 1-1: The VXLAN
EVPN Multi-homing topology and addressing scheme.
