Linksys LGS326P User Manual

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Chapter 10 - IP Interface
IPv4
Layer 2 IP Addressing
The device has one IPv4 address and up to two IPv6 interfaces in the management VLAN. This IP
address and the default gateway can be configured manually, or by DHCP. The static IP address
and default gateway are configured on the IPv4 Interface page. The device uses the default
gateway, if configured, to communicate with devices that are not in the same IP subnet as the
device. By default, VLAN 1 is the management VLAN, but this can be modified. The device can
only be reached at the configured IP address through its management VLAN.
The factory default setting of the IPv4 address configuration is DHCPv4. This means that the
device acts as a DHCPv4 client, and sends out a DHCPv4 request during boot up.
If the device receives a DHCPv4 response from the DHCPv4 server with an IPv4 address, it sends
Address Resolution Protocol (ARP) packets to confirm that the IP address is unique. If the ARP
response shows that the IPv4 address is in use, the device sends a DHCPDECLINE message to
the offering DHCP server, and sends another DHCPDISCOVER packet that restarts the process.
If the device does not receive a DHCPv4 response in 60 seconds, it continues to send
DHCPDISCOVER queries, and adopts the default IPv4 address: 192.168.1.251/24.
IP address collisions occur when the same IP address is used in the same IP subnet by more than
one device. Address collisions require administrative actions on the DHCP server and/or the
devices that collide with the device.
When a VLAN is configured to use dynamic IP addresses, the device issues DHCPv4 requests
until it is assigned an IPv4 address from a DHCPv4 server. The management VLAN can be
configured with a static or dynamic IP address.
The IP address assignment rules for the device:
•
Unless the device is configured with a static IPv4 address, it issues DHCPv4 queries until
a response is received from a DHCPv4 server.
•
If the IP address on the device is changed, the device issues gratuitous ARP packets to the
corresponding VLAN to check IP address collisions. This rule also applies when the device
reverts to the default IP address.
•
The system status LED changes to solid blue when a new unique IP address is received
from the DHCP server. If a static IP address has been set, the system status LED also
changes to solid blue. The LED flashes when the device is acquiring an IP address and is
currently using the factory default IP address 192.168.1. 251.
•
The same rules apply when a client must renew the lease, prior to its expiration date
through a DHCPREQUEST message.

Linksys LGS326P Specifications

General

Switch type	Managed
Switch layer	-
Quality of Service (QoS) support	Yes
Combo SFP ports quantity	2
Installed SFP+ modules quantity	0
Gigabit Ethernet (copper) ports quantity	26
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	24
10G support	No
Number of VLANs	128
Networking standards	IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3af, IEEE 802.3az, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Virtual LAN features	Tagged VLAN
Copper ethernet cabling technology	1000BASE-T, 100BASE-T, 10BASE-T
DHCP features	DHCP client
Security algorithms	802.1x RADIUS
Throughput	38.69 Mpps
Jumbo frames	9000
MAC address table	8000 entries
Product color	Black, Blue
LED indicators	Activity, Link, PoE, System
Number of fans	2 fan(s)
Memory type	DRAM
Internal memory	128 MB
Input current	3.5 A
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	28.58 W
Total Power over Ethernet (PoE) budget	192 W
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Depth	200 mm
Width	440 mm
Height	44 mm
Weight	3096 g