ADD CONTRIBUTING.md and UPDATE README.md

CONTRIBUTING.md

@@ -0,0 +1,23 @@
+### :exclamation: Disclaimer
+- This Repo is a mirror of various internal MIB files from various Cisco Repos.
+- All changes **MUST** be modified at the source and then replicated out to this repo.
+- This guide details how this repo handles Pull Requests, Issues and Application support to that all involved are on the same page.
+
+### :repeat: Pull Requests
+- **ONLY** Pull requests from Cisco Systems employees will be accepted. See the [Internal Contributing Page](https://wiki.cisco.com/display/IOXXECHASA/SNMP+MIB+Publishing+guidelines) for the full process.
+- Acceptable pull requests from 3rd parties will be converted to an Cisco Defect e.g `CSCxyz1234` to update the internal repository.
+  - This will be referenced in an issue for the same change.
+- All pull requests require an code review and approval before merging by an [individual with commit privledges](https://github.com/orgs/cisco/teams/cisco-mib-commit/members).
+- Pull requests for the `v2/CISCO-PRODUCTS-MIB.my`, `v2/CISCO-ENTITY-VENDORTYPE-OID-MIB.my` are owned by the Cisco SNMP Team and all PRs **MUST** be created by them.
+
+### :beetle: Issues
+- Issues with MIB files may be raised on this Repo. 
+  - This includes syntax issues, missing values, missing imports or other general problems with the files.
+- For Syntax issues please include `smilint` output.
+  - Errors 0-2 will be converted to Cisco Defects for the appropriate Cisco development team to triage.
+  - Errors 3-6 will be triaged a defect filed if it is deemed to be required.
+  - Reference: [SMILINT Error Levels](https://www.ibr.cs.tu-bs.de/projects/libsmi/smilint.html)
+
+### :mag: SNMP / Application Support
+- Please consult with the [Cisco Technical Assistance Center (TAC)](https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html) or [Support Forums](https://community.cisco.com/t5/network-management/bd-p/5931-discussions-network-management).
+- Issues of this type will be closed and a note redirecting to the worldwide contacts.

README.md

@@ -1,7 +1,16 @@
 # Cisco Systems Public MIB Area
 Various Public Simple Network Management Protocol (SNMP) management information bases (MIBs) from Cisco Systems.
 
-### Usage Guidelines
+---
+
+### :exclamation: Disclaimer
+- This Repo is a mirror of various internal MIB files from various Cisco Repos. 
+- All changes **MUST** be modified at the source and then replicated out to this repo.
+  - For contributing, issues, or pull requests. Please review the CONTRIBUTING.md file.
+
+---
+
+### :book: Usage Guidelines
 The suggested way to retrieve the MIBs applicable to the Cisco products that you wish to manage is as follows:
 1. For each product, download and open the desired [Support List](https://github.com/cisco/cisco-mibs/tree/main/supportlists) file:
    - `supportlists/[product]/supportlist.txt`
@@ -16,10 +25,12 @@ The suggested way to retrieve the MIBs applicable to the Cisco products that you
    - If you are looking for a specific file click “Go to File” and [search for the filename](https://docs.github.com/en/search-github/searching-on-github/finding-files-on-github).
      - Tip: You may also use Cisco Feature Navigator to find the desired MIB hosted in this Repo: https://cfnng.cisco.com/mibs
 
-### Directory Structure
+---
+
+### :file_folder: Directory Structure
 - `app_notes` directory with application notes for using the MIBs.
 - `archive` directory with MIBs, OIDs, schema for IOS 10.0 and earlier releases.
-- `contrib` directory with helpful mib-related scripts/files (see `contrib/README`)
+- `contrib` directory with helpful mib-related scripts/files.
 - `IE1000-MIBS` directory with IE1000 MIBs.
 - `ME1200-MIBS` directory with ME1200 MIBs.
 - `oid` directory with SunNet Manager OID files for the MIBs.
@@ -33,10 +44,12 @@ The suggested way to retrieve the MIBs applicable to the Cisco products that you
 - `v2` SNMP version 2 MIBs.
 - `viptela-mibs` directory with Viptela MIBs.
 
-### Other Notes
+---
+
+### :speech_balloon: Other Notes
 - This GitHub repository started as a 2/28/2022 backup of the public `ftp://ftp.cisco.com/pub/mibs/`
   - Empty folders have not been backed up.
-- On 10/15/2022 `ftp.cisco.com` has been officially decomissioned making this the new source for Cisco MIB files.
+- On 10/15/2022 `ftp.cisco.com` has been officially decommissioned making this the new source for Cisco MIB files.
   - Cisco Developers will continue maintain MIB files in this location as they did on `ftp.cisco.com`
 - Other product MIBs are located on the applicable [software.cisco.com](https://software.cisco.com/download/home) downloads page. 
   - e.g. [3504 Wireless Controller, Release 8.10.162.0 MIBs](https://software.cisco.com/download/home/286312601/type/280775088/release/8.10.162.0)