Introduction; Overview - Nokia ESB26 User Manual

1. Introduction

Overview

ESB26 is an integrated Ethernet switch based on DX200 hardware platform. The ESB26
features a total of 26 Ethernet ports of types and placements as follows:
P o r t
20 full duplex 10/100Base
T/TX Ethernet ports
2 full duplex 10/100Base
T/TX Ethernet ports
2 1000Base-T ports
2 1000Base-SX ports
ESB26 contains also one RS-232 interface (RJ45) on the front panel for management
purposes.
The two 1000Base-T ports support all the 10/100/1000 Mbit/s link speeds. Speed mixing is
supported, too, e.g. it is possible to use one of the 1000Base-T ports in gigabit mode while the
other runs in 100Mbit mode.
The intended use of the ESB26 is to collect the Ethernet links of different computer units and
preprocessor units of DX200-based network elements, and allow access to them from the
upper levels. The ESB26 can be used in all M98F DX200 based network elements. The
ESB26 can be assembled into a place of ESB20/ESB20-A by using the existing cabling.
NOTE
The ESB26 is designed to operate in forced cooling M98F only.
The two graphics below represent two examples of operational environments for the ESB26.
As presented, the ESB26s are used to collect traffic from/to different computer units and
preprocessor units and forward it towards 3rd party L3 switches. It is important to note that
VLAN-technology is used in order to divide the different units into several broadcast
domains. It must also be noted that redundant paths do exists and Rapid STP (as according to
IEEE 802.1w) is used in order to avoid loops.
MN700004 Rev 01
P l a c e m e n t
back panel
front panel
front panel
front panel
1
C o n n e c t o r
AMP 2mm Z-pack
connectors compatible
RJ45
RJ45
LC
T r a f f i c
downlink
downlink/uplink
downlink/uplink
uplink