Differences

This shows you the differences between two versions of the page.

--- networking:cisco-1921 [18/11/2025 00:04] – [Running Config] andrew
+++ networking:cisco-1921 [29/03/2026 12:40] (current) – [Background] andrew
@@ Line 9: / Line 9: @@
 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 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}}
+{{:networking:ehwic-1ge-sfp.png?150|sfp fibre module fitted}}
+{{:networking:cisco-ehwic-sfp.png?150|Without SFP module}}
@@ Line 123: / Line 124: @@
+After a reboot:-
+<code>
+int-router01>sh ver
+Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.7(3)M2, RELEASE SOFTWARE (fc2)
+int-router01>sh ip interface brief
+Interface                  IP-Address      OK? Method Status                Protocol
+Embedded-Service-Engine0/0 unassigned      YES NVRAM  administratively down down
+GigabitEthernet0/0         82.120.220.241  YES NVRAM  down                  down
+GigabitEthernet0/1         unassigned      YES NVRAM  down                  down
+GigabitEthernet0/0/0       unassigned      YES NVRAM  up                    up
+</code>
+The ''GigabitEthernet0/0/0'' interface is the WIC (Slot 0, port 0/0), the 0/0 and 0/1 are the fixed ethernet interfaces.
 ==== Running Config ====
@@ Line 128: / Line 145: @@
 To show a running config without page breaks, use ''term length 0''
+Old running config from 1841 - needs updating to Gigabit interfaces.
 <code>
 version 15.1
@@ Line 137: / Line 155: @@
 !
 boot-start-marker
-boot system flash:c1841-advipservicesk9-mz.151-4.M6.bin
+<del>boot system flash:c1841-advipservicesk9-mz.151-4.M6.bin</del>
 boot-end-marker
 !