Name: Dell Force10 MXL Blade
Brand: Dell
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Simple Network Management Protocol (SNMP) | 533

Display the Ports in a VLAN

FTOS identifies VLAN interfaces using an interface index number that is displayed in the output of the

command

show interface vlan, as shown in Figure 30-18.

Figure 30-18. Identifying the VLAN Interface Index Number

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 in Figure 30-19.

Figure 30-19. Display the Ports in a VLAN in SNMP

The table that the Dell Force10 system sends in response to the snmpget request is a table that contains

hexadecimal (hex) pairs, each pair representing a group of eight ports.

• 7 hex pairs represents a stack unit. Seven pairs accommodates the greatest number of ports available

on an MXL Switch, 56 ports. The last stack unit is assigned 8 pairs; the eighth pair is unused.

The first hex pair, 00 in Figure 30-19, represents ports 1-7 in Stack Unit 0. The next pair to the right

represents ports 8-15. To resolve the hex pair into a representation of the individual ports, convert the hex

pair to binary. Consider the first hex pair 00, which resolves to 0000 0000 in binary:

• 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.

FTOS(conf)#do show interface vlan 10

Vlan 10 is down, line protocol is down

Address is 00:01:e8:cc:cc:ce, Current address is 00:01:e8:cc:cc:ce

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

Last clearing of "show interface" counters 00:12:42

Queueing strategy: fifo

Time since last interface status change: 00:12:42

> 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

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