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Questions tagged [arista]

Use this tag for Arista Specific questions.

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33 views

Arista VXLan with QinQ

I've got a weird situation. Three doctors offices are merging in two cities and we are planning on merging them into one building in each city. Due to politics and crappy software each office will ...
0
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1answer
35 views

vpc/mlag block half of uplink?

We want to configure 2 Arista switches by mlag and connect 1 port channeled switch to both of arista's. so in this case, if one of our arista fail the other one will respond. now my question here is ...
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0answers
15 views

How to get all the telemetry data from Arista's CloudVision?

Arista's operating system the EOS sends all their telemetry data to the CloudVision platform. CloudVision than normalizes that data converts to HBase if I am not mistaken. So I have a simple question, ...
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1answer
68 views

Two switches, one uplink - best way to link them?

Overview I have two Arista 7050SX switches. They don't support stacking. But I essentially will be using them as a stacked pair none the less (just means managing two individual switches). They're ...
0
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1answer
45 views

Arista switch - getting chassis ID of currently logged in switch

I can not find how can i check local switch Chassis ID. here i found that command: show lldp local-info management 1 should show me what i want but there is no "local-info" option. Is there any ...
0
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1answer
104 views

Difference between port-channel lacp fallback individual VS. static?

What is the exact difference between: port-channel lacp fallback individual port-channel lacp fallback static
1
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1answer
284 views

Confused about switch configuration with 2 VLANs, and next hop route?

I have an Arista switch I'm trying to setup for learning. The router is a Netgate SG-3100 running pfSense 2.4.5. I have two VLANs setup: VLAN 22 - for normal browsing. Using the 10.0.22.0/24 subnet ...
1
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1answer
49 views

Arista eos eAPI for full config

Anyone worked on full configuration of arista switches using the eAPI? I am going through the ansible eos_ modules and see that there are few missing configs. Do we have to use eos_config module for ...
2
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2answers
170 views

Finding the available capacity on switch interface in bytes or bits

Below is the output from my "show interface " command PE1.18:01:44#sh interfaces Ethernet 3 Ethernet3 is up, line protocol is up (connected) Hardware is Ethernet, address is 001c.7374.3d95 ...
1
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2answers
541 views

25G SFP28 NIC and 25G SFP Adapter

My company recently purchased some Dell R740's with 2 Dual Port 25G SFP28 NIC's (Broadcom 57414) and wants to hook them up to an Arista 25G switch. We have two types of SFP adapters from Arista: SFP-...
1
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1answer
363 views

Arista 7050s Loopback Q-in-Q

Debugging an issue where I'm trying to get q-in-q working on an Arista 7050S with a loopback. I’ve got packets egressing the switch double tagged but in ingress, I can see them on the STAG’s SVI. I’...
1
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0answers
92 views

Unexpected behavior when changing switch from unmanaged to managed mode [closed]

I'm currently puzzled by why a switch works only when in unmanaged mode. If I enable Management mode, using default configuration, things break down. Here's the current situation: ...
4
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2answers
4k views

How to encapsulate all VLAN traffic inside VXLAN

As I understand VXLAN, it looks like it should be able to encapsulate and properly route VLAN-tagged traffic. However, in investigating how to actually configure VXLAN on network devices, it looks ...
2
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3answers
444 views

Arista switches- Email alert if interface status changes

I'm looking to be notified of interface state changes on my Arista switches without my manual polling of the logs. For example, tailing var/log/messages, I might see something like: un 29 19:10:48 ...
3
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1answer
590 views

Arista: Unexpected results when pinging MLAG SVI

My understanding of Arista's implementation of MC-LAG is relatively weak, so its likely I've misunderstood a deliberate limitation of how the mlag works. Taking a basic example, Where, switch1: ...
2
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1answer
1k views

Arista: Configuration diffs and archiving

Looking through the documentation for Arista EOS - the configuration replace command was only introduced in 4.14, leaving <4.14 without any form of replacing configurations (versus simply merging). ...
3
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2answers
62 views

Arista 40G switch capeablities

I have an FPGA that outputs packets to a fixed IP and MAC address. That then feeds into a 40G Arista switch. The Unicast UDP packets correctly route to the destination IP and MAC. We now have ...
2
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1answer
380 views

Inter-PVLAN communication on Arista 7050S

We have an Arista 7050S configured with a few PVLANs. All hosts on these PVLAN share the same /24 network (major flaw?). They can communicate between themselves within each PVLAN and with the gateway (...
1
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1answer
242 views

Allow outgoing connections

I have an Arista switch (EOS) and I'm having trouble allowing outgoing connection from the switch to the outside. Using tcpdump I can see that no packets are being allowed. This has an impact on DNS ...
8
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4answers
3k views

Arista MLAG ISSU upgrade - primary/secondary switch?

When upgrading Arista switches which are part of an MLAG cluster, is it necessary to start with the secondary switch? In "Arista Warrior", from Gary A. Donahue, he specifies on page 123 to start by ...