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Tag: Juniper

Juniper EVPN BGP options – eBGP-only design

Juniper EVPN BGP options – eBGP-only design

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In another part of his never-ending EVPN/BGP saga Ivan Pepelnjak argued with Juniper fanboys once again about sanity of iBGP-over-eBGP and eBGP-over-eBGP designs and all that fun stuff. I’ve already written my opinion about that topic in my previous post and numerous comments to Ivan’s posts (TL;DR: iBGP-over-eBGP design has its advantages, just implement it wisely – don’t place RR on spine switches). But there is one thing that worries me. In almost every one of his posts Ivan talks…

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This Week: Data Center Deployment with EVPN/VXLAN

This Week: Data Center Deployment with EVPN/VXLAN

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Brand new book – This Week: Data Center Deployment with EVPN/VXLAN. Author did a great job explaining and showing various examples of real world implementations of EVPN-VXLAN and DCI. Definitely must read for anybody aiming for JNCIE-DC lab. I wish I’ve read this before my lab attempt – this book really helps to update and systematize all EVPN-VXLAN related knowledge. But that’s for sure not the first book to read if you doesn’t know anything about EVPN-VXLAN. I recommend firstly…

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Got my number!

Got my number!

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After a week of waiting (why this is taking so long? this wasn’t a particularly pleasant week), I finally got my number. Brand new JNCIE-DC #31 !!! The main note about the lab – time management is the most important thing on the exam. Don’t rush to the keyboard, read and understand all the tasks and it’s interdependencies. Have a plan regarding order of tasks – not all tasks can be completed in order in which they written. Don’t be…

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Tomorrow is the big day!

Tomorrow is the big day!

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How fast time flies! Tomorrow ( August 10) is my JNCIE-DC lab day. I spent last couple of days repeating my notes and labbing small optional topics like CoPP, ZTP, etc; and also familiar ones like CoS and MPLS L3VPN. Today is the rest day. Fly to Amsterdam, drink a couple of beers and go to bed. Fortunately I’ve been there before, so no worries about how to find Juniper office and be late for the exam. Plan for tomorrow: go…

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EVPN lab – EVPN-VXLAN to EVPN-MPLS stitching

EVPN lab – EVPN-VXLAN to EVPN-MPLS stitching

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Last big topic that I need to practice – Data Center Interconnect (DCI). Fortunately I pretty confident in my skills in the MPLS L3VPN area, so I think I shouldn’t spend much time for this topic. The most complex DCI option remains – EVPN stitching. In this topic I will show you my example of EVPN-VXLAN to EVPN-MPLS stitching (there is also option of EVPN-VXLAN to EVPN-VXLAN stitching, but configuration should be similar to my example). EVPN stitching concept is…

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EVPN-VXLAN lab – IRB functionality

EVPN-VXLAN lab – IRB functionality

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Firstly, QFX5100 series doesn’t support EVPN-VXLAN inter-VXLAN routing, so I practice all IRB related topics on vMX devices. vQFXs acts as a simple L2 EVPN gateways. This post continues the EVPN-VXLAN lab from the previous ones. Full vMX IRB interfaces configuration: alex@vMX1# show interfaces irb unit 100 {     proxy-macip-advertisement;     family inet {         address 172.16.0.251/24 {             virtual-gateway-address 172.16.0.254;         }     }  …

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EVPN-VXLAN lab – RT assignment methods

EVPN-VXLAN lab – RT assignment methods

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This post continues the EVPN-VXLAN lab from the previous one. For now I configured the simplest possible variant of RT assignment – one vrf-target for all ES and VNI routes (vrf-target target:65000:1): alex@vQFX1# show switch-options service-id 1; vtep-source-interface lo0.0; route-distinguisher 11.11.11.11:1; vrf-target target:65000:1;    ### This RT applies to ALL EVPN routes alex@vMX1# show routing-instances evpn {     vtep-source-interface lo0.0;     instance-type virtual-switch;     interface ge-0/0/4.0;     interface ae0.0;     route-distinguisher 1.1.1.1:1;    …

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EVPN-VXLAN lab – basic L2 switching

EVPN-VXLAN lab – basic L2 switching

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My EVPN-VXLAN lab topology: There is IP Fabric in DC1 (2 vMX and 2 vQFX), and 2 vMX_v14 to emulate CE devices. Each CE device connected to EVPN via LACP LAG ae0 (EVPN Active-Active ethernet segment on service side). vMX_old-1 also has sigle-homed interface ge-0/0/4 (just to show you the difference). Each CE device split into two logical systems for more convenient testing of routing functionality (global device context for Vlan100 and logical-system second for Vlan200). You could also use…

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MC-LAG lab – advanced IRB functionality

MC-LAG lab – advanced IRB functionality

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For simplified Layer 3 gateway services, where Layer 3 routing protocols are not run on the MC-LAG peers, you simply configure the same Layer 3 gateway IP address on both MC-LAG peers and enable IRB MAC address synchronization. This IP address is used as the default gateway for the MC-LAG servers or hosts. For more advanced Layer 3 gateway services, where Layer 3 routing protocols and Layer 3 multicast operations are required on the MC-LAG peers, you configure unique IRB…

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MC-LAG lab – basic L2 connectivity

MC-LAG lab – basic L2 connectivity

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My topology for MC-LAG practice: I already configured IP fabric between vQFX and vMX nodes using EBGP (to save space, I show the configuration for only one device – the rest are configured the same way): alex@vMX1> show configuration protocols bgp group underlay type external; export direct; local-as 65001; multipath multiple-as; neighbor 192.168.0.1 {     ###vQFX1     peer-as 65011; } neighbor 192.168.0.3 {     ###vQFX2     peer-as 65022; } alex@vMX1> show configuration policy-options policy-statement direct term…

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