As per rfc-3411, the engineID generated by AVD is not following any of the schemes. This requires a change to the "hostname_and_ip" and "system_mac" methods.
The algorithm must be tuned to use either of these methods decided by the 5th octet(rfc-3411):
The fifth octet indicates how the rest (6th and following octets)
are formatted. The values for the fifth octet are:
0 - reserved, unused.
1 - IPv4 address (4 octets)
lowest non-special IP address
2 - IPv6 address (16 octets)
lowest non-special IP address
3 - MAC address (6 octets)
lowest IEEE MAC address, canonical
order
4 - Text, administratively assigned
Maximum remaining length 27
5 - Octets, administratively assigned
Maximum remaining length 27
6-127 - reserved, unused
128-255 - as defined by the enterprise
Maximum remaining length 27
There are two engineID formats, decided by the first bit (refer rfc-3411):
0 - as defined by enterprise using former methods that existed
before SNMPv3. The snmpEngineID has a length of 12 octets.
1 - The length of the octet string varies.
Some of the examples are listed here, slides 7-14.
What can be implemented
EngineID formulae:
As the enterprise ID = 30065 = 00007571x
1) for hostname_and_ip: 80007571 + 04 + <ascii(hostname_and_ip)> or <hexdigest(hostname_and_ip)>
2) for system_mac: 80007571 + 03 + mac
Additionally, we can implement:
3) mgmt_ip: 80007571 + 01 + <hex(ip)>
Which component(s) of AVD impacted
eos_designs
How do you run AVD ?
None
Steps to reproduce
No response
Relevant log output
No response
Contributing Guide
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Issue Summary
Issue
As per rfc-3411, the engineID generated by AVD is not following any of the schemes. This requires a change to the "hostname_and_ip" and "system_mac" methods.
The algorithm must be tuned to use either of these methods decided by the 5th octet(rfc-3411):
There are two engineID formats, decided by the first bit (refer rfc-3411):
Some of the examples are listed here, slides 7-14.
What can be implemented
EngineID formulae: As the enterprise ID = 30065 = 00007571x 1) for hostname_and_ip: 80007571 + 04 + <ascii(hostname_and_ip)> or <hexdigest(hostname_and_ip)> 2) for system_mac: 80007571 + 03 + mac
Additionally, we can implement: 3) mgmt_ip: 80007571 + 01 + <hex(ip)>
Which component(s) of AVD impacted
eos_designs
How do you run AVD ?
None
Steps to reproduce
No response
Relevant log output
No response
Contributing Guide