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DCI options for EVPN

DCI options for EVPN

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Four Data Center InterConnect (DCI) options for EVPN-VXLAN service are described in detail in the Advanced Data Center Switching (ADCX) course materials. These options are: EVPN-VXLAN session over L3VPN-MPLS service; EVPN-VXLAN to EVPN-MPLS stitching; EVPN-VXLAN to EVPN-VXLAN stitching; EVPN-VXLAN session over dark fiber. First and last options are not so interesting – simple EVPN-VXLAN session between DC devices over direct IP connectivity or via L3VPN service. Basic L3VPN/MPLS stuff. But EVPN stitching is a slightly different story. Resembles Inter-AS VRF Option-A….

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MX EVPN IRB functionality

MX EVPN IRB functionality

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First note – QFX5100 series doesn’t support EVPN-VXLAN inter-VXLAN routing, and doesn’t support EVPN-MPLS at all. So all information in this post applicable only to MX devices. For EVPN-MPLS there is two types of IRB implementation: configuration of same MAC address on every IRB interface; default gateway MAC synchronization using EVPN default-gateway community. In EVPN-MPLS it is expected, that if IRB functionality necessary for this L2 domain, then IRB interfaces should be configured on every participating PE router. …

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EVPN-VXLAN RT communities

EVPN-VXLAN RT communities

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The general route target configured under vrf-target will be used by type 1 EVPN routes: MX:   set routing-instances VS_VLAN100 vrf-target target:1:100 QFX:  set switch-options vrf-target target:65000:2 If you configure vrf-target auto, then type 2 and type 3 EVPN routes will use the auto-derived per-VNI route target for export and import. Community numbers based on autonomous system number defined in routing-options stanza. MX:   set routing-instances VS_VLAN100 switch-options vrf-target auto QFX:  set switch-options vrf-target auto If you prefer…

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QFX EVPN basic config

QFX EVPN basic config

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The overall structure of QFX5100 EVPN-VXLAN configuration is almost identical to MX configuration, but QFX configuration statements are scattered across three different stanzas: switch-options, protocols evpn and vlans. First is the switch-options config: set switch-options vtep-source-interface lo0.0 set switch-options route-distinguisher 10.0.0.3:1 set switch-options vrf-import EVPN_VRF_IMPORT set switch-options vrf-target target:65000:2 set switch-options vrf-target auto           ### depends on AS number in routing-options Vtep-source-interface and route-target policices are configured here. Configuration of vrf-import policy: set policy-options…

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MX EVPN-VXLAN basic config

MX EVPN-VXLAN basic config

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Basic config for EVPN-VXLAN service on Juniper MX. Important BGP configuration statements: set protocols bgp group EVPN_VXLAN family evpn signaling set protocols bgp group EVPN_VXLAN multipath Routing instance configuration: VS_VLAN100 {     vtep-source-interface lo0.0;     instance-type virtual-switch;     route-distinguisher 1.255.255.0:100;     vrf-import VS_VLAN100_IMP;     vrf-target target:1:100;     protocols {         evpn {             encapsulation vxlan;             extended-vni-list 1100;  …

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MX EVPN-MPLS basic config

MX EVPN-MPLS basic config

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Short notes about MX EVPN-MPLS configuration. Vlan-based configuration: routing-instances {     EVPN-1 {         instance-type evpn;         vlan-id 100;         interface ae0.100;         routing-interface irb.100;         route-distinguisher 11.11.11.11:1;         vrf-target target:65000:1;         protocols {             evpn {                 default-gateway do-not-advertise;            }…

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Juniper EVPN useful links

Juniper EVPN useful links

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For study of Juniper EVPN technology I recommend to read this materials (in this particular order): Juniper QFX10000 Series book; EVPN whitepaper; Advanced Data Center Switching (ADCX) course materials; EVPN Day One book; L3GW VMTO whitepaper; MX L2VPN Feature Guide; QFX EVPN/VXLAN Feature Guide. EVPN is definitely the core topic of JNCIE-DC lab, so I need to study all of this thoroughly. Firstly I need to read (and understand) all this stuff, and later on I plan to heavily practice all…

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JNCIE-DC Exam Objectives and useful links

JNCIE-DC Exam Objectives and useful links

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In this post I tried to collect all useful links to technical documentation that I plan to use during my study for JNCIE-DC lab attempt. This materials will be used primarily for repetition and more focused, deep-dive study of lab topics – should be used only after studying Juniper DC base materials from previous post. So, the complete JNCIE-DC exam blueprint: Management On-box Scripts                               –>…

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