Differences

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--- networking:cisco-1921 [17/11/2025 10:56] – [Cisco 1921 Gigabit router] andrew
+++ networking:cisco-1921 [17/11/2025 14:00] (current) – [Optical Network Terminator] andrew
@@ Line 6: / Line 6: @@
 {{:networking:cisco1921.png?400 |Cisco 1921}}
 Replaces [[cisco-1841|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.
+Also, there is a USB port in addition to the serial connector, this implements a usb to serial converter internally, it shows up as ''/dev/ttyACM0''.
 {{ :networking:cisco-ehwic-sfp.png?100|Without SFP module}}
-Note this is NOT the direct fibre from the ISP, they provide a single WDM / TDM fibre to the ONT as part of the G-PON WAN network, then a Ethernet RJ45 from the ONT to a fibre converter and on to the 1941 SFP fibre in a different building.
+Note this is NOT the direct fibre from the ISP, they provide a single WDM / TDM fibre to the Optical Network Terminator (ONT) as part of the G-PON WAN network, then a Ethernet copper RJ45 from the ONT to a fibre converter and on to the 1941 SFP fibre in a different building.
 {{:networking:ehwic-1ge-sfp.png?200|sfp fibre module fitted}}
-Also, there is a USB port in addition to the serial connector, this implements a usb to serial converter internally, it shows up as /dev/ttyACM0.
@@ Line 41: / Line 43: @@
-Carrying on without the WIC interface, just a copy and paste from the previous but with ''GigabitEthernet'' rather than ''FastEthernet''.
+Carrying on without the WIC interface, just a copy and paste from the previous [[cisco-1841-config|1841 config]] but with ''GigabitEthernet'' rather than ''FastEthernet''.
@@ Line 85: / Line 87: @@
 ==== Updating Flash ====
-Having found an appropriate IOS which supports my WIC, I was ablr to tftp the file up to the flash: on the router, and then set the boot image to use the new image.
+Having found an appropriate IOS which supports my WIC, I was able to tftp the file up to the flash: on the router, and then set the boot image to use the new image.
-If two images are present in flash, the router will boot off the first image it finds, this may not be the one you require, so set a boot image line. Once this is deemed stable, I will probably remove it from the router to an archive, and there will not be a requirement to set the image.
+If two images are present in flash, the router will boot off the first image it finds, this may not be the one you require, so set a boot image line. Once this new image is deemed stable, I will probably remove it from the router to an archive, and there will not be a requirement to set the image boot name.
@@ Line 119: / Line 121: @@
 router01#
 </code>
+==== Running Config ====
+TODO
+<code>
+</code>
 ====== Network Side ======
@@ Line 135: / Line 149: @@
-OpenReach ONT
+OpenReach ONT (Believed to be a Nokia model)
 {{:networking:450px-fttp-ont-pon.jpg?100|}}