Nokia Switch 100BASE T User Manual

Product Overview  
Ethernet bridge adapters  
100BASE-T, E66210.32  
10/100BASE-T, E66210.33  
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Contents  
Contents  
1
Product description ...............................................................................4  
2
2.1  
2.2  
Hardware installation instructions .......................................................7  
Front panel...............................................................................................9  
Cabling...................................................................................................11  
3
Product features...................................................................................12  
Bridge.....................................................................................................12  
LAN ........................................................................................................12  
WAN.......................................................................................................13  
Environmental ........................................................................................13  
Modem requirements .............................................................................13  
3.1  
3.2  
3.3  
3.4  
3.5  
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Product Overview  
1
Product description  
The Nokia ET-adapter is a plug-and-play Ethernet interface adapter for Dynanet  
(DNT) modems. This Ethernet interface adapter can be installed to the adapter  
port of a DNT modem.  
Figure 1.  
ET adapter  
The main function of the ET-adapter is to bridge two LANs over the WAN.  
Ethernet frames received from the LAN are encapsulated inside the HDLC  
frames and the HDLC frames are sent to the WAN according the serial data  
speed of WAN. The WAN interface of ET-adapter is connected to the interface  
port of DNT-series modem. Packets that are received from WAN are  
decapsulated from HDLC frame and then sent to Ethernet interface of an ET-  
adapter.  
WAN transmission rate and used time slots are selected from the modem end.  
The modem can indicate adapter type and Ethernet link status. All other settings  
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Product description  
are fixed. There are three selectable Ethernet interface settings in E66210.33:  
10BASE half and full duplex and 100BASE full duplex.  
The data path and main components of ET-adapter are described in the block  
diagram below.  
ET-Adapter 100 BASE-T  
Power  
3,3V / 1,8V  
ISEPROM  
2048x8  
HDLC  
MII  
10/100  
Bridge  
DS33ZII  
PHY  
LXT971  
WAN Euro  
RJ-45  
LAN  
Link integrity & activity  
LEDs  
SDRMA  
4x1Mx32  
Figure 2.  
Block diagram  
ET-adapter is compatible to virtual LANs and 802.1Q VLAN tags are  
forwarded transparently over the WAN. Using virtual LANs several subnets can  
be combinated to the one Ethernet link, but only if also Ethernet switches  
support VLANs.  
100BASE-T  
100BASE-T  
Ethernet  
switch  
Ethernet  
switch  
VLAN1  
VLAN2  
VLAN1  
VLAN2  
VLAN  
Figure 3.  
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Ethernet bridge adapter makes rate adaption and it can be connected to  
10BASE-T ET-adapter or DYNANET EIU.  
100BASE-T  
10BASE-T  
10BASE-T  
Figure 4.  
E66210.32 connected  
7 OCTETS  
PREAMBLE  
SFD  
1 OCTET  
6 OCTETS  
6 OCTETS  
2 OCTETS  
DESTINATION ADDRESS  
SOURCE ADDRESS  
LENGTH/TYPE  
MAC CLIENT DATA  
PAD  
Octets within  
frame transmitted  
top to bottom  
46-1500 OCTETS  
4 OCTETS FRAME CHECK SEQUENCE  
All octets except preamble  
and SFD are bridged  
LSB  
MSB  
transparently over the WAN  
0
7
b
b
Bits within  
frame transmitted left to right  
Figure 5.  
MAC frame  
The figure above describes the standard Ethernet frame without VLAN tag.  
Standard maximum frame length is 1518 bytes. The ET-adapter supports frames  
included in 802.1Q VLAN tag. 1522 bytes long frames are forwarded from  
LAN to WAN.  
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Hardware installation instructions  
2
Hardware installation instructions  
Modern  
connector  
Ethernet  
connector  
NR3  
Pin 1  
Figure 6.  
ET Adapter card E66210.33  
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Table 1. E66210.33 bridging  
Link speed  
10BASE  
Half  
1-2  
10BASE  
Full  
100BASE  
Full  
Duplex status  
Closed pins  
LED 100  
3-4  
5-6  
Off  
Off  
On  
LED HD  
On  
Off  
Off  
Installing E66210.32  
Figure 7.  
Installing the adapter  
1.  
Switch off the modem power, plug the ET-adapter into the slot and  
tighten two screws. Then switch on the modem. The ET-adapter is ready  
to use.  
Installing E66210.33  
1.  
2.  
Select Ethernet interface configuration and close pins of NR3 according  
to Table 1.  
Switch off the modem power, plug the ET-adapter into the slot and  
tighten two screws. Then switch on the modem. The ET-adapter is ready  
to use.  
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2.1  
Front panel  
100 BASE-T Bridge  
RX  
LINK  
Figure 8.  
Front panel  
RX displays receive status: LED blinks every time when an Ethernet packet is  
received from the LAN.  
LINK displays link status: LED is lit when cable is connected to another  
Ethernet equipment and the link is up. Link status is also shown at the DNT  
modem: if the link is down there is no incoming signal alarm.  
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Speed  
10  
100  
100  
100 HD  
Duplex  
Half  
Full  
10/100 BASE-T Bridge  
Off On  
Off Off  
On Off  
Full  
RX  
LINK  
100  
HD  
Figure 9.  
Front panel E66210.33  
RX displays receive status. LED blinks every time when an Ethernet packet is  
received from the LAN.  
LINK displays link status. LED is lit when cable is connected to another  
Ethernet equipment and the link is up. Link status is also shown at the DNT  
modem: if the link is down there is no incoming signal alarm.  
100 displays speed status. LED is lit when the ET-adapter is configured to  
100BASE mode, otherwise the adapter is configured to 10BASE mode.  
HD displays duplex status. LED is lit when the ET-adapter is configured to  
half duplex mode, otherwise the adapter is configured to full duplex mode.  
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Pin  
1
Signal  
Direction  
input  
Rx+  
2
Rx-  
input  
3
Tx+  
output  
4
Not connected  
Not connected  
Tx-  
5
6
output  
7
Not connected  
Not connected  
8
Figure 10.  
Ethernet connector and pin numbering  
2.2  
Cabling  
ET-adapter is connected to the network adapter with a direct Ethernet cable.  
The maximum length of a category 5 cable is 100m. If the ET-adapter is  
connected to the Ethernet hub or switch then use a cross-connected Ethernet  
cable.  
Figure 11.  
Direct cabling  
Ensure that the Ethernet port that is connected to ET-adapter has the same  
configuration as the ET-adapter. Port speed and duplex status have to be the  
same at both Ethernet ports. It is not recommended to use auto-negotiation  
option. Port configuration should always be fixed.  
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Product Overview  
3
Product features  
3.1  
Bridge  
All received frames are forwared transparently to the WAN.  
Receive buffer size  
Transmit buffer size  
1728 MAC frames  
320 MAC frames  
Receive buffer is queue for data that was received from the Ethernet (LAN) to  
be transmitted to the HDLC (WAN).  
Transmit buffer is for data that was received from the WAN to be transmitted  
to the Ethernet.  
Receive buffer high watermark  
Receive buffer low watermark  
1632 MAC frames  
1536 MAC frames  
If the receive buffer size exceeds higher watermark, the ET adapter will send a  
pause frame to LAN. Pause frame is sent every time when a frame is received  
from LAN until the low watermak is reached. The pause frame is sent to a  
multicast destination address 01-80-C2-00-00-01. Pause time parameter of  
pause frame is 80 slots. Pause frame is sent only when full duplex mode is  
selected.  
3.2  
LAN  
Selectable configuration  
10 Mbps and half duplex  
10 Mbps and full duplex  
100 Mbps and full duplex  
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Product features  
Maximum transfer unit  
2016 bytes  
Any frame larger than the maximum transfer unit (MTU) value will be rejected.  
The frame size includes destination address, source address, type, length, data  
and CRC. Standard Ethernet frame maximum length is 1518 bytes (destination  
address 6 bytes + source address 6 bytes + type 2 bytes + data 1500 bytes +  
CRC 4 bytes).  
Cable  
UTP CAT5, maximum cable length  
100m  
3.3  
WAN  
HDLC  
RFC1662  
FCS  
16 bits  
Idle signal flag  
7E (0111 1110)  
Idle flags are sent continously to WAN when there are no packets in the receive  
buffer. Two idle flags are sent between every HDLC packet.  
Line speed  
n x 64 kbps (n = 1…32)  
3.4  
Environmental  
Climatic  
Operation:  
Transport:  
Storage:  
EN 300 019, class 3.2  
EN 300 019, class 2.3  
EN 300 019, class 1.2  
EN 300 386  
EMC:  
Power consumption:  
800 mW  
3.5  
Modem requirements  
The ET-adapter can be installed to the follwing modems. The modem adapter  
type is displayed as V.35 or Ethernet E66210.32 depending on the DNT modem  
software version.  
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Product Overview  
DNT2M-sp  
T65620  
T65630  
T65670  
T65680  
T65650  
T65660  
DNT2M-mp  
DNT2Mi-sp  
DNT2Mi-mp  
DNT2M-G-sp  
DNT2M-G-mp  
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