Rainsbrook

ipv6 - [Easy to remember addresses]

andrew (andrew@undisclosed.example.com) — 2026-06-14T22:11:07+00:00

IPv6 Why there are no new IPv4 jokes? Because they're all exhausted! Just a messing about page for me. Addresses here are not mine.... Just random ones. The Google Public DNS IPv6 addresses are as follows: 2001:4860:4860::8888 2001:4860:4860::8844

cisco-1841 - [Troubleshooting ADSL]

andrew (andrew@undisclosed.example.com) — 2026-06-14T21:32:58+00:00

Cisco ADSL & 1841 router My Cisco 877 worked well but a few months ago started to reboot randomly. The cause of this is undetermined, but possibly PSU related. But the PSU has a cisco proprietary connector so I cannot test by substitution. Consequently I decided to update to a new model, hence 1841.000

sfp - [Multimode Fibre]

andrew (andrew@undisclosed.example.com) — 2026-06-09T09:16:09+00:00

SFP module (Small Form-factor Pluggable) SFP modules followed on from GBIC modules and are used in both ethernet and fibre channel switches (and others too), they are usually optical I/O modules although RJ45 copper Ethernet ones are available. Ethernet modules are most commonly 1GB/s but 10GB/s and higher are available.

cisco-1921

andrew (andrew@undisclosed.example.com) — 2026-06-09T09:11:06+00:00

Cisco 1921 Gigabit router Background [Cisco 1921] Replaces Cisco ADSL & 1841 router as this is a Fast Ethernet only router, the 1921 is a similar router but with Ge0/0 and Ge0/1 interfaces and two hwic slots. I have a EHWIC-1GE-SFP-CU card as well because in the foreseeable future I may need to bring the internet in from the ISP ONT some distance away, so a utp to fibre next to the ONT would link to the WIC SFP port.000

cisco-2960-x

andrew (andrew@undisclosed.example.com) — 2026-06-07T09:26:00+00:00

Cisco 2960X series Gigabit ethernet switches [Cisco 2960-X switch]

cisco2960-x.jpg

andrew (andrew@undisclosed.example.com) — 2026-06-07T09:25:33+00:00

gpon-switch.jpg - metadata edited

andrew (andrew@undisclosed.example.com) — 2026-06-04T14:33:19+00:00

cisco-1841-config-nat

andrew (andrew@undisclosed.example.com) — 2026-06-04T09:19:21+00:00

ADSL 1841 NAT config Almost nothing yet DNS server configure terminal ip dns server ip domain lookup ip name-server 1.1.1.1 ip host printer.int.domain.com 192.168.1.41 end Current configuration : 3678 bytes ! ! Last configuration change at 20:35:55 BST Tue May 12 2026 ! NVRAM config last updated at 12:24:03 BST Mon Apr 20 2026 ! NVRAM config last updated at 12:24:03 BST Mon Apr 20 2026 version 15.1 service timestamps debug datetime msec service timestamps log datetime msec service pas…

start - [Networking Index]

andrew (andrew@undisclosed.example.com) — 2026-06-04T09:13:14+00:00

Networking Index Pages in this namespace: * 1200ap-wpa-wpa2 * 2600routerpassword * adsl * adva-fsp150 * atm-1841-adsl * atm-3810-msc * atm-forum-clearing-codes * atm-index * atm_addresses * atm_glossary * atmscratchpad * breezecom * cellplex7000 * cicso-dhcp-helperaddress * cicso-misc * cisco * cisco-1262-ap-upgrade-config * cisco-1841 * cisco-1841-config * cisco-1841-config-nat * cisco-1901-gsm-gps * cisco-1921 * cisco-2801-cme * cisco-2801-gsm-gps * cisco-2960-x *…

evchsrger - [EVSE based controller]

andrew (andrew@undisclosed.example.com) — 2026-06-03T12:25:50+00:00

EV charge controllers Mainpine based Based on a Mainpine controller, internally an ESP series microcontroller, possibly reflashable to Tasmota type code. Would do the MQTT part, not sure how to do the EV control part. This should have had a MCB / RCBO fitted as well as an isolator, although the feed is from a 16A socket with it's own MCB.000

start - [Tuya / Tasmota]

andrew (andrew@undisclosed.example.com) — 2026-05-30T13:53:36+00:00

Home Automation Background This is my first foray into Home Automation (if you exclude fitting PIR sensors to stairwells, toilets etc), so I've attempted to explain the terms and protocols I've encountered and sometimes found confusing. It's an opinionated sort of blog too, there are two broad approaches to HA, one of these is the 000

os

andrew (andrew@undisclosed.example.com) — 2026-05-26T07:50:15+00:00

Operating Systems Without software to interact with the user and run applications, the hardware just discussed cannot do anything. ---------- Next Page:- Applications ---------- This page has been accessed:- Today: 0 Yesterday: 0 Until now: 0

sfp3.jpg - metadata edited

andrew (andrew@undisclosed.example.com) — 2026-05-25T18:52:26+00:00

atm2.png - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:48:30+00:00

atm1.jpg - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:48:30+00:00

serial2.png - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:47:50+00:00

serial1.png - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:47:49+00:00

tokenring1.png - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:47:05+00:00

networkcard.png - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:43:26+00:00

osi.gif - created

andrew (andrew@undisclosed.example.com) — 2026-05-20T16:42:54+00:00