Simple Network Management Protocol | 1001Enable and Disable a Port using SNMPFetch Dynamic MAC Entries using SNMPDell Force10 supports the RFC 1493 dot1d table for the default VLAN and the dot1q table for all otherVLANs.In Figure 48-22, R1 has one dynamic MAC address, learned off of port GigabitEthernet 1/21, which amember of the default VLAN, VLAN 1. The SNMP walk returns the values for dot1dTpFdbAddress,dot1dTpFdbPort, and dot1dTpFdbStatus.Step Task Command Syntax Command Mode1 Create an SNMP community on the Dell Force10system.snmp-server community CONFIGURATION2 From the Dell Force10 system, identify the interfaceindex of the port for which you want to change the adminstatus. Or, from the management system, use thesnmpwwalk command to identify the interface index.show interface EXEC Privilege3 Enter the command snmpset to change the admin status using either the object descriptor or the OID. Chooseinteger 1 to change the admin status to Up, or 2 to change the admin status to Down.snmpset with descriptor: snmpset -v version -c community agent-ip ifAdminStatus.ifindex i {1 | 2}snmpset with OID: snmpset -v version -c community agent-ip .1.3.6.1.2.1.2.2.1.7.ifindex i {1 | 2}Note: The 802.1q Q-BRIDGE MIB defines VLANs with regard to 802.1d, as 802.1d itself does not definethem. As a switchport must belong a VLAN (the default VLAN or a configured VLAN), all MAC addresslearned on a switchport are associated with a VLAN. For this reason, the Q-Bridge MIB is used for MACaddress query. Moreover, specific to MAC address query, dot1dTpFdbTable is indexed by MAC addressonly for a single forwarding database, while dot1qTpFdbTable has two indices —VLAN ID and MACaddress —to allow for multiple forwarding databases and considering that the same MAC address islearned on multiple VLANs. The VLAN ID is added as the first index so that MAC addresses can be readby VLAN, sorted lexicographically. The MAC address is are part of the OID instance, so in this case,lexicographic order is according to the most significant octet.Table 48-6. MIB Objects for Fetching Dynamic MAC Entries in the Forwarding DatabaseMIB Object OID Description MIBdot1dTpFdbTable .1.3.6.1.2.1.17.4.3 List the learned unicast MAC addresses on thedefault VLAN.Q-BRIDGE MIBdot1qTpFdbTable .1.3.6.1.2.1.17.7.1.2.2List the learned unicast MAC addresses onnon-default VLANs.dot3aCurAggFdbTable.1.3.6.1.4.1.6027.3.2.1.1.5List the learned MAC addresses of aggregatedlinks (LAG).F10-LINK-AGGREGATION-MIB
