3Com 5500-EI PWR - Page 742

1-2
Figure 1-2 Port connection mode for Switch 5500-EI series ring topology XRN fabric
Mode
Green=Speed
Yellow=Duplex
RPS
PWR
Console
Unit
1000Base - X
1
Speed:Green=100Mbps,Yellow=10Mbps
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28
Duplx:Green=Full Duplx,Yellow=Half Duplx
H3C S3600 Series
10/100Base-TX
Mode
Green=Speed
Yellow=Duplex
RPS
PWR
Console
Unit
1000Base - X
1
Speed:Green=100Mbps,Yellow=10Mbps
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28
Duplx:Green=Full Duplx,Yellow=Half Duplx
H3C S3600 Series
10/100Base-TX
Mode
Green=Speed
Yellow=Duplex
RPS
PWR
Console
Unit
1000Base - X
1
Speed:Green=100Mbps,Yellow=10Mbps
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28
Duplx:Green=Full Duplx,Yellow=Half Duplx
H3C S3600 Series
10/100Base-TX
XRN fabric also supports bus topology, which has the same requirements as the ring topology. The
difference is that in a bus topology structure, the units at both ends of the bus have only one fabric port
connected, as shown in
Figure 1-3.
Figure 1-3 XRN fabric bus topology
Fabric ports
On a Switch 5500-EI 28 port(Switch 5500-EI 52 port) switch, only four GigabitEthernet ports can be
configured as fabric ports. If not used for fabric connection, these four ports can be used as general data
ports. The four ports fall into two groups according to their port numbers:
z GigabitEthernet 1/0/25(49) and GigabitEthernet 1/0/26(50) form the first group.
z GigabitEthernet 1/0/27(51) and GigabitEthernet 1/0/28(52) form the second group.
Only one group of ports can be configured as fabric ports at a time. Given a group, either
GigabitEthernet 1/0/25(49) or GigabitEthernet 1/0/27(51) can be configured as the left fabric port, and
either GigabitEthernet 1/0/26(50) or GigabitEthernet 1/0/28(52) can be configured as the right fabric
port.
Once you configure a port as a fabric port, the group that comprises this fabric port becomes the fabric
port group, and you cannot configure a port in the other group as a fabric port. For example, once you
configure GigabitEthernet 1/0/25 as a fabric port, this port automatically becomes the left port and the
first group becomes the fabric port group.
The system does not require a consistency in the fabric port groups between different switches. That is,
the left fabric port in the first group of a switch can be connected to the right fabric port in the second
group of the peer switch.