Questions tagged [arista]
Use this tag for Arista Specific questions.
34
questions
1
vote
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
vote
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 ...
0
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
vote
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
vote
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
vote
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
votes
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 ...
