Olicom CrossFire 8730, Справочное руководство

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CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1 Switch Overview
.
Figure 12. Two Separate Ethernet Clouds
➽
Note: The CRF connection attribute can be set from the console or via ClearSight.
Technical Background
For each CRF with a Fast Ethernet port, the spanning tree protocol should be
enabled. For SRT CRF, the default STP algorithm is IEEE 802.1D. Only this
spanning tree algorithm can be used for Fast Ethernet ports.
A Fast Ethernet port has its own LAN segment number and recognizes source
routing. However, the Fast Ethernet port is an element of a transparent network and
frames are passed through only in forwarding state. This restriction is applied to all
frames, including ARE and specifically routed frames.
Only one link of a CRF at a time may become forwarding. To achieve this, the
spanning tree costs of the internal BRF to CRF link will be modified according to
the CRF connection attribute. The BRF to CRF link is a virtual internal link and
exists only for spanning tree purposes.
The spanning tree cost of each primary connection remains unmodified.
Note that in the Secondary 1 and Secondary 2 connections, different values are
added to the cost of the internal BRF to CRF link in order to make sure that
3 2 5 4 8 7 6 10 9 15 12 11 14 13 17 16 19 18 20
STACK-LINK
ATTACH RX TX
DIAG PWR RST ERR MANAGEMENT
21
FAST ETHERNET
21-22 25-26 22 26 25
1
Fast Ethernet Translation Switch
CrossFire 8730
FAULT
STATUS
FAULT
STATUS
LINK
100
ACT
LINK
100
ACT
LINK
100
ACT
LINK
100
ACT
3 2 5 4 8 7 6 10 9 15 12 11 14 13 17 16 19 18 20
STACK-LINK
ATTACH RX TX
DIAG PWR RST ERR MANAGEMENT
21 FAST ETHERNET 21-22 25-26 22 26 25
1
Fast Ethernet Translation Switch
CrossFire 8730
FAULT
STATUS
FAULT
STATUS
LINK
100
ACT
LINK
100
ACT
LINK
100
ACT
LINK
100
ACT
Primary CRF
FORWARDING
Primary CRF
FORWARDING
Secondary CRF
BLOCKING
Token-Ring
cloud
Token-Ring
cloud
SR Bridge
Ethernet cloud
Ethernet cloud