Users Guide

Or, from the management system, use the snmpwwalk command to identify the interface index.
3 Enter the snmpset command to change the admin status using either the object descriptor or the OID.
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}
Choose integer 1 to change the admin status to Up, or 2 to change the admin status to Down.
Fetch Dynamic MAC Entries using SNMP
Dell Networking supports the RFC 1493 dot1d table for the default VLAN and the dot1q table for all other
VLANs.
NOTE: The 802.1q Q-BRIDGE MIB defines VLANs regarding 802.1d, as 802.1d itself does not define them.
As a switchport must belong a VLAN (the default VLAN or a configured VLAN), all MAC address learned on
a switchport are associated with a VLAN. For this reason, the Q-Bridge MIB is used for MAC address query.
Moreover, specific to MAC address query, the MAC address indexes dot1dTpFdbTable only for a single
forwarding database, while dot1qTpFdbTable has two indices — VLAN ID and MAC address — to allow for
multiple forwarding databases and considering that the same MAC address is learned on multiple VLANs.
The VLAN ID is added as the first index so that MAC addresses read by the VLAN are sorted
lexicographically. The MAC address is part of the OID instance, so in this case, lexicographic order is
according to the most significant octet.
Table 82. MIB Objects for Fetching Dynamic MAC Entries in the Forwarding Database
MIB Object OID MIB Description
dot1dTpFdbTable .1.3.6.1.2.1.17.4.3 Q-BRIDGE MIB List the learned unicast
MAC addresses on the
default VLAN.
dot1qTpFdbTable .1.3.6.1.2.1.17.7.1.2. 2 Q-BRIDGE MIB List the learned unicast
MAC addresses on
nondefault VLANs.
dot3aCurAggFdb Table .1.3.6.1.4.1.6027.3.2. 1.1.5 F10-LINK-
AGGREGATION -MIB
List the learned MAC
addresses of aggregated
links (LAG).
In the following example, R1 has one dynamic MAC address, learned off of port TenGigabitEthernet 1/21,
which a member of the default VLAN, VLAN 1. The SNMP walk returns the values for dot1dTpFdbAddress,
dot1dTpFdbPort, and dot1dTpFdbStatus.
Each object is comprised of an OID concatenated with an instance number. In the case of these objects, the
instance number is the decimal equivalent of the MAC address; derive the instance number by converting
each hex pair to its decimal equivalent. For example, the decimal equivalent of E8 is 232, and so the instance
number for MAC address 00:01:e8:06:95:ac is.0.1.232.6.149.172.
Simple Network Management Protocol (SNMP) 1004