Questions tagged [evpn]
The evpn tag has no usage guidance.
16
questions
3
votes
1
answer
101
views
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 ...
- 134
2
votes
1
answer
74
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 ...
- 157
0
votes
0
answers
28
views
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 ...
- 1,088
0
votes
0
answers
59
views
Environment with EVPN-BGP and VPLS (Huawei S5700)
I apologize for not using the right terminology but I'm in a weird position and I'm a newbie with MPLS.
I replaced a person who left the company in a small SP, I come from the enterprise world but I ...
- 11
0
votes
0
answers
29
views
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 ...
- 11
1
vote
0
answers
1k
views
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 ...
6
votes
0
answers
526
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 ...
- 1,177
1
vote
0
answers
172
views
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 ...
- 4,351
2
votes
1
answer
2k
views
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-...
- 1,478
1
vote
1
answer
338
views
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-...
- 87
1
vote
0
answers
278
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 ...
- 4,351
0
votes
0
answers
109
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 ...
- 87
2
votes
1
answer
1k
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)
# ...
- 4,351
1
vote
2
answers
1k
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 ...
- 4,351
0
votes
1
answer
153
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'...
- 27
1
vote
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 ...
- 4,351