L3-CDH-BUS-ROUT
CRITICAL
COMMAND CONTROL
Level 3 · hardware
Network Router and Switch
Radiation-Hardened Data Router Assembly
Central routing and switching equipment interconnecting all Ark data network segments
Purpose
Central routing and switching equipment interconnecting all Ark data network segments
Context
Child of L2-CDH-BUS
Principles
- ▸Store-and-forward routing enables flexible network topologies
- ▸Redundant router pairs (hot standby) prevent single-point network failure
- ▸VLAN segmentation isolates critical control traffic from bulk data
- ▸Quality-of-service scheduling prioritizes time-critical messages
Typical implementations
- ▸ATMEL AT7913E SpaceWire router (ESA heritage)
- ▸TTTech TTE-Switch for aerospace applications
- ▸Cobham GR740 LEON4 with integrated SpaceWire router
Lunar considerations
- ▸Central router failure could isolate entire sections of Ark - redundancy essential
- ▸Router firmware must be updatable for 100-year software evolution
- ▸Power consumption of networking equipment adds to base power budget
Specifications
Functional
| primary function | Central routing and switching equipment interconnecting all Ark data network segments |
Physical
| materials | Rad-hard FPGA (Xilinx/AMD XQRKU060), MRAM configuration memory, Titanium chassis |
Interfaces
Provides
- Central data routing for all network segments
Requires
- Power for router operation (~15-30W)
Cite this entry
Lunar Ark Codex. "Network Router and Switch" (L3-CDH-BUS-ROUT). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-CDH-BUS-ROUT
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.