Author Archives: Ruben

How to upgrade Arista switches

This is a quick guide on how to upgrade Arista switches, you need to have a support contract with Arista to donwload their latest version of software.

Confirm the actual version

ARISTA-7504-02(s1)(config)#show version
Arista DCS-7504N
Hardware version: 12.00
Serial number: HSH18100113
System MAC address: 2899.3a61.db81Software image version: 4.19.8M
Architecture: i386
Internal build version: 4.19.8M-8840164.4198M
Internal build ID: c419af27-06da-4a41-b1c3-567309a30adeUptime: 19 hours and 46 minutes
Total memory: 31583780 kB
Free memory: 28199196 kB

Entering in bash mode


Arista Networks EOS shell

[[email protected] ~]$ scp [email protected]:EOS-4.20.8M.swi /mnt/flash/EOS-4 .20.8M.swiEOS-4.20.8M.swi
Warning: Permanently added ‘’ (RSA) to the list of known hosts.
[email protected]’s password:
EOS-4.20.8M.swi 100% 596MB 85.1MB/s 00:07

Copying the firmware required, it’s possible to copy it using different methods

[[email protected] ~]$ exit
ARISTA-7504-01(s1)#conf t
ARISTA-7504-01(s1)(config)#install source ?
certificate: Source path
extension: Source path
file: Source path
flash: Source path
ftp: Source path
http: Source path
https: Source path
scp: Source path
sftp: Source path
sslkey: Source path
terminal: Source path
tftp: Source path

After copy the firmware over, it’s time to install and reboot it

ARISTA-7504-01(s1)(config)#install source flash:EOS-4.20.8M.swiEOS-4.20.8M.swi reload now
Preparing new boot-config… done.
Committing changes… done.
Reloading…Broadcast message from [email protected] (Thu Sep 13 13:28:29 2018):The system is going down for reboot NOW!

Once rebooted, the new version is ready!

ARISTA-7504-01(s1)#show version
Arista DCS-7504N
Hardware version: 12.00
Serial number: HSH18100137
System MAC address: 2899.3a61.db99

Software image version: 4.20.8M
Architecture: i386
Internal build version: 4.20.8M-9384033.4208M
Internal build ID: 5c08e74b-ab2b-49fa-bde3-ef7238e2e1ca

Uptime: 3 weeks, 4 days, 3 hours and 52 minutes
Total memory: 31579144 kB
Free memory: 28315128 kB

Magic Quadrant for Enterprise Network Firewalls 2018

Security landscape is evolving fast, so fast detection and mitigation is important for customers.   Many enterprises are looking to firewall vendors to provide cloud-based malware detection instances to aid them in their advanced threat detection efforts, as a cost-effective alternative to stand-alone sandboxing appliances.
SSL Decryption is one of the key topics, since TLS 1.2 to the TLS 1.3 standard will undoubtedly force changes in how enterprise firewall vendors process the traffic.
Policy Orchestration and Automation Become Critical on SDN deployments, some vendors haven’t provide much attention om this topic. Firewall Services Within IaaS Environments Become an Area of Differentiation.

Magic Quadrant for Enterprise Network Firewalls

Full Report on Report Magic Quadrant for Enterprise Network Firewalls 2018

Cisco Firepower Forbidden- you don’t have permission to access

After re-image FPR2110 from FTD to ASA9.8.2, the chassis (FXOS) mgmt interface UI become unaccesible giving the following error “Forbidden- you don’t have permission to access / on this server”.

In a nutshell, i could access FXOS via SSH and ASA (SSH & HTTPS) but the FXOS Chassis Management was broken. After spend some time, the only way to get this sorted was upgrade for the version 9.9.x

After upgrade, everything was working again.


Be a Cisco Champion 2019

Cisco Champion program is looking for the best and the brightes tech enthusiasts who are also active members of the community.

If this sounds like you, then submit your application for the 2019 Cisco Champion Program. Cisco Champions are an elite group of technical experts who are passionate about IT and enjoy sharing their knowledge, expertise, and thoughts across the social web and with Cisco. The program has been running for 5 years and is just getting started!

If you still not believing give a look on Cisco Champions discussing the benefits of the program at CLUS this year.

The application form will be open from October 30th  – November 12th, 2018. 

Fill out the application to be a 2019 Cisco Champion.