Layer 3 switch, Overview, Ip directed broadcasts – Motorola 2.1 User Manual

Page 23: Layer 3 switch -9, Overview -9, Ip directed broadcasts -9, Figure 2-3, Cisco 3750 l3 -9, Ip address host

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Chapter 2: Network Setup

IP Address

Host

DHCP Pool 10.49.0.30 – 10.49.255.254

VLAN 49 (802.11 clients)
VLAN 49 Address Pool

Layer 3 Switch

Overview

The standard small system reference design includes a Cisco 3750 L3 Switch which supports
20 Intelligent Access Points (IAPs). Four switch ports (ports 1-4) are also available for
network servers such as the One Point Wireless Manager™ server and RADIUS. IAPs are
connected to L3 switch (ports 5-24) via one of three methods:

•

Direct Ethernet

•

Connection via a wireless bridge (Motorola Canopy™ System)

•

Connection via a wireline media converter (e.g. Ethernet over Fiber media
converter)

Figure 2-3

Cisco 3750 L3


MODE

STACK

SPEED

DUPLX

STAT

MASTR

RPS

SYST

1

2

3

4

5

6

7

8

9 10

11 12

1X

2X

11X

12X

13 14

15 16

17 18

19 20

21 22

23 24

13X

14X

23X

24X

Catalyst 3750

SERIES

1

2




The Cisco 3750 router provides the following services:

•

Routing between the wireless subnets 10.1.0.0 /16, 10.24.0.0/16, 10.49.0.0/16,
and the server network 172.31.0.0/16 (e.g. inter VLAN routing between VLANs
1, 24, 31, and 49).

•

DHCP relay from the wireless subnets to the DHCP server running on the One
Point Wireless server 172.31.0.20.

•

802.1Q VLAN tag recognition enabling the support of a trunked set of VLANs
terminating on a single physical interface

IP Directed Broadcasts

By default, the 3750 Switch drops IP directed broadcasts; thus preventing them from being
forwarded. The One Point Wireless Manager™ application utilizes SNMP broadcasts for
automatic network discovery. We have enabled IP directed broadcasts in the 3750 L3 switch

2-9

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