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Questions tagged [arista]

Use this tag for Arista Specific questions.

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0answers
31 views

Problems when configuring VLAN on Arista vEOS Router

I'm setting up a network on GNS3 with the end goal of configuring VxLAN. I routed 3 Arista vEOS router together and each of them has a host attached. With basic L3 routing, everything works. I need ...
1
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0answers
13 views

arista pbr - set ip default nexthop

i have arista 7050s-52 and here is my config : policy-map type pbr pbr-tun 10 class pbr-tun-acl set nexthop 172.x.x.x class-map type pbr match-any pbr-tun-acl 10 match ip access-group ...
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0answers
33 views

Does ARISTA's EOS support SSM mapping like CISCO?

On Arista L3 switch, I have to combine usage of PIM-SM for IGMPv2 and SSM for IGMPv3 devices. On CISCO switch, there is an option like ip igmp ssm-map Which allows you, for example, static mapping of ...
3
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1answer
77 views

How to use the first four Ethernet ports on Arista 7050QX-32S?

I'm trying to configure an Arista 7050QX-32S switch and basically the first 4 ports are missing on the switch. This model is a full 40GbE switch and there's four 10GbE interfaces for convenience ...
0
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1answer
29 views

System default switchport shutdown on Arista EOS

Is there any equivalent to: system default switchport shutdown As available on Cisco's NX-OS to Arista EOS running with at least version 4.25.1F?
0
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1answer
51 views

What prevents a device from receiving its own multicast stream, and can it be turned off?

I know that it is normally not possible for a device to receive its own multicast stream on the same network interface where it transmitted said stream. I also understand why this is sensible, and ...
3
votes
1answer
66 views

Arista adding multiple route-map match interfaces?

on Cisco, I could do the following, route-map abc permit 10 match interface Vlan1 Vlan2 Vlan3 set metric-type type-1 But seems on Arista EOS I could only add one match interface, how could I add ...
3
votes
2answers
148 views

Arista MLAG: should I have a separate L3 interface for keepalive like in Cisco's NX-OS?

In Cisco's NX-OS when forming the MLAG equivalent pair (vPC) there are some best practices to follow, for example, a separate bonded L3 interface just for the keepalive packets using separate ports ...
0
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1answer
42 views

Arista Automation Script 7050S

I have a arista 7050S as a backup for a n3k-c3064pq-10gx i want to have an script in arista to ping the n3k-c3064 mgmt IP and if it has 4 or 5 timedout then no shut interface vlan 100-150 , can any ...
0
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0answers
18 views

Arista 7050S BGP Over Management Port not working

i have an Arista 7050s with eos 4.18.1.1F and i have bgp over my management port with my management router (its a VPN router that out staff connect to this router and use our internal router) here is ...
0
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1answer
107 views

Arista 7050S Management port problem

i have a arista 7050s and i have connect management port to a cisco 3750 and i see the port is up in 3750 but its down in arista ! here is the output from arista: Management1 is down, line protocol is ...
0
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0answers
30 views

Arista 7050S can handle 600x SVI?

i have read Arista 7050S datasheet and everything is fit on my project, but i could not find anywhere that if 7050S can handle 500x SVI ? can any one guide me? thank you.
0
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0answers
31 views

Arista 7050S-52

I have a Arista 7050S-52 and i have read its datasheet but i could not find much information, i have around 600 interface vlan, 3k ipv4 routes, 6x bgp neighbor with no full table, some simple access ...
0
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0answers
81 views

Arista and “Unparalleled Performance with Dynamic Deep Buffers and VOQ for Lossless forwarding”

Arista advertises "Unparalleled Performance with Dynamic Deep Buffers and VOQ for Lossless forwarding". My employer is trialing a switch which advertises gigabytes of port buffers. How are these ...
0
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1answer
66 views

BGP local-as command clarification

On my network infrastructure, an Arista switch is the core switch and a pfsense server the gateway. BGP is used to advertise routes for all the internal networks. On Arista switch, I see the BGP ...
2
votes
2answers
759 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
52 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 ...
0
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2answers
225 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
188 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
466 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
vote
1answer
566 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
54 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
votes
2answers
254 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
688 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
vote
1answer
478 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
108 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: ...
5
votes
2answers
6k 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
votes
3answers
557 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
votes
1answer
757 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
2k 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
votes
2answers
67 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
votes
1answer
510 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 (...
2
votes
1answer
302 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
votes
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 ...