Cisco 3750G Gigabit Layer 3 switch teardown, a detailed overview for CCNA lab and repair
190Very detailed overview and a full tear-down of a Cisco 3750G-24TS-S gigabit Layer 3 switch.
Since these switches are highly successful, they are used in a large number of companies and organisations as a distribution layer switch. This is why I though that it would be interesting and informative to do an educational video on the Cisco 3750G from the perspective of the CCNA certification and also for repair technicians.
The video is divided in three main sections:
1.) in the first portion I go over the ports, feature sets, Stackwise and related informations
2.) the middle section of the video shows the dismantled motherboard looking at it like a CCNA candidate would, going into the boot process and trying to give a short brainstorming on what happens to a packet using the OSI model
3.) in the last portion the individual components are shown under a 10X optical magnification, so that we can figure out what are the components doing to help out repair technicians. Due to the long material, the third portion will be shown in a separate video.
Parts list for the Mainboard discussed in the video:
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Route Processor: Cisco Yeti (based on IBM PowerPC 405)
ASIC for Layer 2 and Layer 3 switching: Cisco Sasquatch-I
TCAM: Renases R8A20100BA (Marie series network processor and search engine)
Buffer RAM for Store-and-Forward: Samsung K7N401801B
Flash: 16MB chip from Intel for the IOS
NVRAM: the flash contains also startup-config.txt and vlan.dat
DRAM: SDRAM from Samsung
ROMMON: I could not find where is the ROMMON located
Serial Console: Max3232 RS232 transceiver
Parts list for the components:
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These are presented in Part2 of this video series.