Cisco Info – My IT Notes

Serial number check (warranty etc):

https://cway.cisco.com/sncheck/

Настройка ASA, да и вообще отличный сайт с мануалами

Практические руководства по начальной настройке:

https://pyatilistnik.org/kak-nastroit-kommutatoryi-cisco-3-urovnya-na-primere-cisco-3560/
https://pyatilistnik.org/kak-nastroit-marshrutizator-cisco-organizatsiya-seti-dlya-nebolshogo-ofisa/
https://pyatilistnik.org/staticheskaya-marshrutizatsiya-cisco/

WiFi blog:

https://mrncciew.com/

Working with the flash file system:

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/system_management/configuration_guide/b_sm_3se_3850_cg/b_sm_3se_3850_cg_chapter_010011.html

Recursively delete non-empty folder from flash:

delete /force /recursive flash:FOLDERNAME

Passwords Security:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-xe-3se-3850-cr-book/sec-s1-xe-3se-3850-cr-book_chapter_0110.html

Cisco Device Security:

https://arny.ru/education/ccnp-enterprise/rasshirennaya-bezopasnost-cisco/

How to Reset Cisco Catalyst 3560 Back to Factory Defaults:

https://fatmin.com/2015/09/29/how-to-reset-cisco-catalyst-3560-back-to-factory-defaults
First you need to power down the switch. Once the switch is powered off, hold down the mode button, and power the switch on. The switch will boot up and you should see the switch prompt as shown below.
Now type flash_init. Your output should be similar to what you see below.
Check out the contents of flash and locate config.text and vlan.dat (if it exists).
Now delete the vlan.dat and config.text.
Reboot switch

Enter Rommon:

Push Ctrl and Break (use submenu in Putty) before the device start loading firmware.

Recover Catalyst Fixed Configuration Switches from a Corrupted Image:

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/41845-192.html

Show full config:

show run all

Cisco hardware and info short:

http://wiki.ciscolinux.co.uk/index.php/Cisco_1941_with_EHWIC-4G-LTE-G

Cisco EHWIC-4G-LTE info:

https://jakondo.ru/nastrojka-modulya-cisco-ehwic-4g-lte-g-na-rabotu-s-mobilnym-operatorom-yota/

Additional ACL Features:

https://etutorials.org/Networking/Router+firewall+security/Part+III+Nonstateful+Filtering+Technologies/Chapter+7.+Basic+Access+Lists/Additional+ACL+Features/

Cisco IP SLA info:

IP SLA is needed, in particular, for setting up redundancy in networks with static routing.
https://www.practicalnetworking.net/stand-alone/cisco-ip-sla-using-a-cisco-router-to-generate-traffic/
https://learningnetwork.cisco.com/s/question/0D53i00000Kt0s9CAB/ip-sla-tracking-issue
Configure delay for flapping links:
https://packetpushers.net/blog/using-ip-sla-delay-feature-to-safely-monitor-lossy-links/
For example I’ve currently configured my home router like this:
track 1 ip sla 1 reachability delay down 0 up 120
because my main home provider often fails for less than a minute and I’m experiencing frequent unneeded reconnects while working.

Configuring native VLANs on Cisco Switches:

https://www.practicalnetworking.net/stand-alone/configuring-vlans/