Users Guide
Interface index is 1107787786
Internet address is not set
MTU 1554 bytes, IP MTU 1500 bytes
LineSpeed auto
ARP type: ARPA, ARP Timeout 04:00:00
To display the ports in a VLAN, send an snmpget request for the object dot1qStaticEgressPorts using the interface index as the
instance number, as shown.
The following example shows viewing VLAN ports using SNMP with no ports assigned.
> 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:
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
The table that the Dell Networking system sends in response to the snmpget request is a table that contains hexadecimal (hex)
pairs, each pair representing a group of eight ports.
• On the S5000, 7 hex pairs represent a stack unit. Seven pairs accommodate the greatest number of ports available–64 ports. On
the S5000, the last stack unit begins on the 66th bit.
The rst hex pair, 00 in the previous example, represents ports from 1 to 7 in Stack Unit 0. The next pair to the right represents ports
from 8 to 15. To resolve the hex pair into a representation of the individual ports, convert the hex pair to binary. Consider the rst hex
pair 00, which resolves to 0000 0000 in binary:
• On the S5000, each position in the 8-character string is for one port, starting with Port 1 at the left end of the string, and ending
with Port 8 at the right end. A 0 indicates that the port is not a member of the VLAN; a 1 indicates VLAN membership.
All hex pairs are 00, indicating that no ports are assigned to VLAN 10. In the following example, Port 0/2 is added to VLAN 10 as
untagged; the rst hex pair changes from 00 to 04.
The following example shows viewing VLAN ports using SNMP with ports assigned.
[Dell Networking OS system output]
R5(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 Gi 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
The value 40 is in the rst 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, 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: The table contains none of the other information the command provides, 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.
Simple Network Management Protocol (SNMP)
817