Arista 7048
The Arista 7048 is a large-buffer 1RU switch using external DRAM for packet buffering. See the deep buffer concept page for context.
| Field | Value |
|---|---|
| Ports | 48 GigE + 4 SFP+ |
| RX Queues | 8Q |
| Total Buffer | 768 MB |
| RX Buffer | ~16 MB/port (estimated) |
| TX Buffer | GOBBS (Gigabytes of Buffering Space) |
Arista claims 50 ms of simultaneous buffer for each of the 48 GigE ports, requiring ~300 MB. The actual 768 MB exceeds that significantly — the excess is likely due to the practicalities of external DRAM chip sizing.