SNMP (Simple Network Management Protocol) Follow

Reference model:

• Switch model name:

- AS7726-32X

- AS7326-56X

- AS7816-64X

- AS5835-54X(T)

- AS4630-54PE

- AS9716-32D

- AS8000(Minipack)

- Wedge100BF-32X

• Edgecore SONiC version: 

- Edgecore-SONiC_20201123_130028_ec202006_74

- Edgecore-SONiC_20201229_070315_ec202006_101

- Edgecore-SONiC_20201229_070315_ec202006_bfn_65(Wedge100BF-32X)

Restriction:

1. There's no SONiC command to modify SNMP settings.  Edit the file /etc/sonic/snmp.yml instead. 
2. Does not support SNMP trap
3. FMIB(RFC1213) didn't include Vlan interface / Loopback interface. For management port(eth0), you need to append information to /etc/sonic/config_db.json first.

{  
omitted...
 "MGMT_PORT": {
       "eth0": {
           "admin_status": "up",
           "alias": "eth0",
           "speed": "1000"
           }
    },
omitted...
}

Default setting:

1. SNMP is enabled
2. Support "Read" only for SNMPv2
3. SNMP community default is public.

4. Support list:

   RFC 1213	MIB-II	OID: 1.3.6.1.2.1
   RFC 2737	Physical Table MIB	OID: 1.3.6.1.2.1.47
   RFC 2863	Interfaces MIB	OID: 1.3.6.1.2.1.2
   RFC 3433	Sensor Table MIB	OID: 1.3.6.1.2.1.99
   RFC 4363	dot1qTpFdbPort in Q-BRIDGE-MIB	OID: 1.3.6.1.2.1.17
   RFC 4292	ipCidrRouteDest table in IP Forwarding Table	OID: 1.3.6.1.2.1.4
   IEEE 802.1 AB	LLDP-MIB	OID: 1.0.8802.1.1.2

Procedure :
Steps 1. Edit the file /etc/sonic/snmp.yml that's SNMP config file.

admin@sonic:~$ vi /etc/sonic/snmp.yml
snmp_rocommunity: public
snmp_location: public 

Steps 2. config reload or power cycle the switch

admin@sonic:~$ sudo config reload -y