Questions tagged [evpn]

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Setting the EVPN VXLAN Interconnect ESI for Data Center Interconnect (Seamless EVPN VXLAN Stitching)

With reference to Juniper Networks , when implementing data center interconnect (DCI) using seamless EVPN VXLAN stitching , why do we have to define iESI (interconnect ESI) to stitch VXLAN VNI from ...
Nabeel's user avatar
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What is the best way to connect 2 DC with VXLAN?

If I have 2 standard VxLAN Spine-Leaf setup, what would be the best way to create 1 VXLAN segment out of the 2 DC? I have 2 WAN links between the Data Centers to interconnect them.
Seathorn's user avatar
3 votes
1 answer
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OSPF ECMP on /32 - consequences on EVPN-BGP

Afaik OSPF ECMP is based, one of the two options, on the destination IP address. Hence if the OSPF advertised route is a /32 basically I wouldn't take advantage of the ECMP. Now the question: in the ...
user2984629's user avatar
2 votes
1 answer
591 views

Why do typical spine-leaf architectures have one border leaf instead of all leafs having an uplink?

In all spine leaf architecture explainers I've seen I've come across the concept of the border leaf which is used as the connection point of the entire clos network to an upstream router, be it either ...
alex's user avatar
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Why Chassis MAC Address is used when advertising EVPN Type 5 routes

In case of EVPN Type 5 or IP Prefix routes advertisement why chassis MAC address or router MAC address is used in addition to VXLAN VNI? I guess VXLAN VNI is working on same principle like MPLS VPN ...
Nabeel's user avatar
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Technology to accepts transparently tagged/untagged frames on an unconfigured AC port

Forehead: I come from the Enterprise world and I'm now approching SP world; I apologize in advance if I don't use the right terminology. Hello, I'm trying to think of a design where on the Attachment ...
GooGoo's user avatar
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VXLAN working over IGP, but no NVE peers or EVPN routes in BGP

I'm an absolute beginner with NX-OS and VXLAN. I'm trying to set up a very simple configuration for VXLAN/EVPN/BGP. I have one NX-OSv spine and two leaf switches. No VPC, no anycast SVI. The ...
Peter Lonergan's user avatar
6 votes
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785 views

EVPN MAC Advertisement route not installed to L2 forwarding table

I have a VLAN-based EVPN connecting two sites in a lab environment based on the network topology described in the DAY ONE: USING ETHERNET VPNS FOR DATA CENTER INTERCONNECT book: For some reason, it ...
Martin's user avatar
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1 vote
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EVPN+VxLAN strange silent host issue

EVPN+VxLAN very strange silent host issue I have very basic EVPN+VxLAN design where i used OSPF/Multicast/BGP/vPC technologies to build small size datacenter. L2VNI working great without any issue. I ...
Satish's user avatar
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2 votes
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Juniper QFX5110 - EVPN-VXLAN ethernet switching table is empty as soon as I enable VXLAN

I am trying to replace our existing Virtual Chassis way of doing mutli-chassis LAG with EVPN multi-homing using VXLAN. My understanding is we should be able to replace any LAG we have with evpn-...
Geekman's user avatar
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ip-prefix-routes with vxlan encapsulation on Juniper MX80 / MX104 17.3R3

I want to check whether this configuration is acceptable by MX80 or MX104 Junos 17.3R3 (JTAC recommended version)? Example configuration: set routing-instances VPN100 instance-type vrf set routing-...
Anton M.'s user avatar
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361 views

Untagged VLAN in EVPN+VxLAN

I am dealing with very strange issue but wanted to check with experts if i am doing anything stupid or not. I have small size EVPN+VxLAN clos network (OSFP+iBGP+Multicast+Arp-suppression (no ...
Satish's user avatar
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167 views

How to connect EVPN DC Fabric to MPLS IP VPN Backbone

Let's suppose that we have a common Clos EVPN/VXLAN-based DC fabric with IP gateways on leaves (anycast gateways). Also there is a lot of different IP VRFs inside a fabric where end hosts reside. What ...
Anton M.'s user avatar
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2 votes
1 answer
2k views

EVPN VxLAN arp suppression TCAM carving

Deploying Clos design network using leaf Cisco Nexus 9396PX and when trying to configure arp-suppression using tcam carving getting this error Free up tcam slice from VACL (default vacl tcam is 512) # ...
Satish's user avatar
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1 vote
2 answers
2k views

EVPN/VxLAN border-leaf question

I have couple of question in above design where i have typical clos network design and my leafs are configured for Cisco vPC for redendency and anycast gateway and running OSPF for underlay and BGP ...
Satish's user avatar
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1 answer
218 views

Can a leaf (mc-lag switch pair) connect to an uplink (spine : a single switch) using lag (not a route-only-port)?

By 'lag', I mean one port from each mc-lag peer connects to a port each on the uplink switch (consider this a single switch spine). The mc-lag is an active-active forwarding pair for L2 traffic (aruba'...
Jayanth's user avatar
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1 answer
2k views

How to route traffic via firewall in EVPN + VxLAN

This is what i am trying to design new network, this is just on paper nothing finalized and i am sure it has lots of issue like firewall should be on leaf not border leaf etc. so that is why i am here ...
Satish's user avatar
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