Daisychaining Cradles - Symbol MC50 User Manual

2-14 MC50 Integrator Guide

Daisychaining Cradles

Daisychain up to four Ethernet cradles to connect several cradles to an Ethernet network.
To daisychain more than one cradle:
1. Connect power to each cradle to daisychain, as shown in
2. Connect an Ethernet cable to Port 1 of the first cradle as shown in
3. Connect a second Ethernet cable between Port 2 of the first cradle, and Port 1 of the second.
4. Connect up to two more cradles as described in Step 3.
Bandwidth Considerations when Daisychaining
Each cradle added to the daisychain impacts the bandwidth provided to the inserted mobile computers, particularly when the mobile
computers attempt to send and receive at data rates that exceed the bandwidth provided to the chain (typically 100 Mbps). If a mobile
computer in a daisychained cradle does not use its bandwidth, that bandwidth is allocated to other inserted mobile computers.
Table 2-2 shows available bandwidth, based on 100 Mpbs, for the maximum number of daisychained cradles, with each attempting
transmission at the maximum data rate.
Daisychained Cradles
Cradle 1
Cradle 2
Cradle 3
Cradle 4
Cradle 5
Cradle 6
Cradle 7
Ethernet Port 2
Figure 2-12. Daisychaining Four Slot Ethernet Cradles
Table 2-2. Daisychaining Bandwidth
Bandwidth Provided to Cradle
Setup on page 2-13.
Setup on page
Ethernet Port 1
(Mbit/sec)
100,000,000
20,000,000
4,000,000
800,000
160,000
32,000
6,400
2-13.
Inserted Mobile Computer's Share of
Bandwidth
20,000,000
4,000,000
800,000
160,000
32,000
6,400
1,280