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EOS

CHECKSUM

# verify /sha512 flash:SMART-eMMC-fw-0x20-v1_0_0.swix

CONFIG SESSIONS

# commit
# abort                             // discard all the changes and exit config session
#show session-config diffs          // diff
#show session-config named NAME_1   // shows session config

Example diff:

-hostname AMS30-LAB-7280-01         // "-" - what's in the startup-config
+hostname R1                        // "+" - what's in the running-config

RESTORE

Aboot#fullrecover                   // Erases everything

SCHEDULER

schedule clear_evpn_blacklist interval 5 timeout 1 max-log-files 1 command clear bgp evpn host-flap

SCP

Allow SCP:

username Admin privilege 15 secret root123
aaa authorization exec default local

Example copying to Arista switch using an SCP:

scp EOS-4.21.5F.swi admin@192.168.160.102://mnt/flash/EOS-4.21.5F.swi

EOS UPGRADE

localhost(config)#boot system flash:EOS-4.32.3M.swi
localhost(config)#exit
localhost#
localhost#show boot-config
Software image: flash:/EOS-4.32.3M.swi

SECRET BOOT IMAGE

/mnt/flash/.boot-image.swi
Aboot# boot /mnt/flash/.boot-image.swi

PORT SECURITY

To delete an address from the port security MAC cache, the address must be removed from the forwarding database prior to executing the “clear port-security” command:

Arista# no mac address-table static 0000.aaaa.bbbb vlan 52 interface ethernet 4/1/1
Arista# clear port-security interface Ethernet 4/1/1

EXTENSIONS

#dir extension:  // folder where you need to put an extension
#extension WORD  // installing an extension
#show extensions // show installed extensions
#copy installed-extensions boot-extensions // make it permanent

TCPDUMP

Only control plane!
But, we can redirect some data plane traffic to the CPU :)

monitor session 1 source Ethernet1/1
monitor session 1 destination Cpu

DEFAULTING ALL INTERFACES

default interface ethernet 1-$