534 | Simple Network Management Protocol (SNMP)
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Figure 30-19 shows the output for an MXL Switch. All hex pairs are 00, indicating that no ports are
assigned to VLAN 10. In Figure 30-20, Port 0/2 is added to VLAN 10 as untagged. And the first hex pair
changes from 00 to 04.
Figure 30-20. Displaying Ports in a VLAN using SNMP
The value 40 is in the first set of 7 hex pairs, indicating that these ports are in Stack Unit 0. The hex value
40 is 0100 0000 in binary. As described above, the left-most position in the string represents Port 1. The
next position from the left represents Port 2 and has a value of 1, indicating that Port 0/2 is in VLAN 10.
The remaining positions are 0, so those ports are not in the VLAN.
Note that the table contains none of the other information provided by the
show vlan command, such as port
speed or whether the ports are tagged or untagged.
Add Tagged and Untagged Ports to a VLAN
The value dot1qVlanStaticEgressPorts object is an array of all VLAN members.
The dot1qVlanStaticUntaggedPorts object is an array of only untagged VLAN members. All VLAN
members that are not in dot1qVlanStaticUntaggedPorts are tagged.
• To add a tagged port to a VLAN, write the port to the dot1qVlanStaticEgressPorts object
, as shown in
Figure 30-21.
• To add an untagged port to a VLAN, write the port to the dot1qVlanStaticEgressPorts and
dot1qVlanStaticUntaggedPorts objects
, as shown in Figure 30-22.
Note: Whether adding a tagged or untagged port, you must specify values for both
dot1qVlanStaticEgressPorts and dot1qVlanStaticUntaggedPorts.
[Dell Force10 system output]
FTOS(conf)#do show vlan id 10
Codes: * - Default VLAN, G - GVRP VLANs
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
G - GVRP tagged, M - Vlan-stack
NUM Status Description Q Ports
10 Inactive U Tengig 0/2
[Unix system output]
> snmpget -v2c -c mycommunity 10.11.131.185 .1.3.6.1.2.1.17.7.1.4.3.1.2.1107787786
SNMPv2-SMI::mib-2.17.7.1.4.3.1.2.1107787786 = Hex-STRING: 40 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00
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