docs(network): document MNNVL rack IP requirements in prerequisites

[aswaroop-nv]

Add control-plane management IP counts for MNNVL racks (switch BMC, two NVOS addresses, and power shelf PMC) so site planners can size OOB pools correctly alongside standard host/DPU nodes.

Related issues

Type of Change

• Add - New feature or capability
• Change - Changes in existing functionality
• Fix - Bug fixes
• Remove - Removed features or deprecated functionality
• Internal - Internal changes (refactoring, tests, docs, etc.)

Breaking Changes

• This PR contains breaking changes

Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• No testing required (docs, internal refactor, etc.)

Additional Notes

Adds a row to the Control Plane Management Network table for MNNVL racks:
3 IPs per node (switch BMC + 2 NVOS) + 1 (power shelf PMC).

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Walkthrough

The network prerequisites documentation adds IP accounting for MNNVL racks, covering switch BMC, NVOS instances, and power shelf PMC allocations.

Changes

Network Documentation

Layer / File(s)	Summary
MNNVL IP accounting docs/getting-started/prerequisites/network.md	Adds the requirement of 3 per switch (BMC + 2 NVOS) + 1 per power shelf PMC IPs for MNNVL racks.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the doc update and the MNNVL rack IP requirement change.
Description check	✅ Passed	The description accurately explains the added MNNVL management IP counts and matches the documented change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Actionable comments posted: 1

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Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In `@docs/getting-started/prerequisites/network.md`:
- Line 24: Clarify the table row’s allocation scope by indicating that the three
switch BMC/NVOS addresses are per node, while the single power shelf PMC address
is per rack; state the total as 3N + 1 IPs for a rack with N nodes rather than
implying 4 IPs per node.

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• Create a new PR with the fixes

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📥 Commits

Reviewing files that changed from the base of the PR and between 83ea2c4 and 172e004.

📒 Files selected for processing (1)

• docs/getting-started/prerequisites/network.md

[aswaroop-nv]

Will update doc

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