Duration: 5 days  (increased to 5 days comparing to 4 days in 1.0 version)

Prerequisites:  Knowledge of OSPF+BGP, IP multicast. Also, as this course assumes knowledge in basic configuration and troubleshooting form server side, networking knowledge from our Linux and linux networking for network administrators, v. 1.1 is also recomended( configuration of bonds on servers, deep knowledge about LACP, etherchannels etc).

Description:

This course presents building of next-generation datacenter networks with VXLAN based EVPN. It is assumed that participants have fair understanding of topics mentioned in prerequisits as all technologies are used in solution.

In first part of the course, Cisco specific concepts regarding VPC technology are covered as they are also used in EVPN solution. Current datacenter design assumes redundant VPC connection from servers to the network with or without LACP. Also, using VPC has some implications to behaviour of other technologies ( like STP, HSRP/VRRP etc) so this is also covered.

Then, VXLAN tunneling technology is covered, also used in this EVPN solution.

EVPN concepts are then introduced with l2 over EVPN. Next, internal L3 connectivity with distributed routing is covered. Finnaly connectivity to external networks are covered.

Regarding topology, leaf/spine topology is used in labs (although EVPN can be used on any topology). Spines are used as BGP route reflectors and anycast PIM RP. Connectivity to servers is using single connection or VPC and specifics and limitations of VPC technology is covered here. Next, standard based solution of “esi multihoming” is also covered.

This course is targeted to EVPN VXLAN implementation where all vlans are limited to particular site or there is extension without control plane replication ( only “leafs” at remote sites).  Although after this course it should be easy to understand concepts that will be used in so called multisite design, multisite config will be covered in separate course.

 

Lab content:

1 Introduction
2 Initial configuration
3 VPC concepts and operation
3.1 Standard portchannel without LACP
3.2 Standard portchannel with LACP
3.3 VPC configuration and example
cfs
3.3.1 Traffic over peer link
3.4 STP in VPC environment with peer-switch feature
3.4.1 Situation without peer-switch
3.5 VPC consistency checks
3.6 VPC mac sync
3.6.1 cfs
3.7 ip arp sync on VPC
3.8 HSRP (or VRRP) simultanous routing with VPC
3.9 VPC and peer-gateway feature
3.9.1 Possible problems with peer-gateway: layer3-router feature
3.10 Additional info about peer-switch, peer-gateway and layer3 peer router with supported topologies
3.11 Clean up
3.12 Some failure scenarios with VPC
3.12.1 Peer-link down
3.12.2 Primary down
3.13 Restore L3 topology in core
4 VXLAN and VXLAN based EVPN intro
5 EVPN, L2, single homed
5.1 Packet analysis
5.2 BUM forwarding in core
5.3 MAC aging with EVPN
6 Internal L3 in EVPN
6.1 Routed traffic between chassis
6.2 Anycast gateway and distributed routing
6.3 L2 traffic
6.4 Troubleshooting/usage summary
6.4.1 Routed traffic
6.4.2 Bridged traffic
7 EVPN and VPC
7.1 Traffic to orphan port
7.2 External L3 connections
7.3 External connections with bgp
7.4 ARP supression
TCAM carving
7.5 BUM with VPC
7.6 BiDir PIM instead of PIM-SM
7.7 Restore PIM-SM
7.8 Infra vlan
8 Mobility
8.1 Mobillity and duplicate mac address detection
8.2 Duplicate IP detection
9 EVPN ESI multihoming
9.1 Example in L2 environment
9.1.1 Carving on trunk
9.1.2 Consistency checks
9.2 Internal EVPN L3 with esi-multihoming
9.3 External connections
10 Additional references