Here are the commonly used OIDs related to routing:
ipRouteTable
(OID: 1.3.6.1.2.1.4.21)`: This is the IP route table which holds the routing information in a device.
ipCidrRouteTable
(OID: 1.3.6.1.2.1.4.24.4)`: This represents the CIDR-based routing table.
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