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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