Olicom CrossFire 8730, Reference Manual

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CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1 Switch Overview
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Secondary 2 – for a second backup connection to the Ethernet cloud. This
connection is always blocking if Primary or Secondary 1 are active.
Each CRF of Fast Ethernet ports connected to the same Ethernet cloud must have
a different connection attribute set. See Figure 11.
Figure 11. Spanning Tree Configuration
The described spanning tree configuration results in exactly one forwarding link
between Ethernet and Token-Ring clouds, additional links becoming stand-by. For
customers migrating from Token-Ring to Ethernet it is recommended over time to
physically split the Token-Ring cloud into disjoint networks to increase bandwidth
between Token-Ring and Ethernet.
Figure 12. below illustrates a network with two physically disjointed Ethernet
clouds. Each switch in the configuration has one primary connection to one of the
two Ethernet clouds and one secondary connection to the other cloud.
This way redundancy for both Ethernet clouds is provided, while at the same time
the traffic load between the Token-Ring and Ethernet clouds is split between the
two switches.
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
Ethernet cloud
Primary CRF
FORWARDING
Secondary CRF
BLOCKING
Token-Ring
cloud
Token-Ring
cloud
SR Bridge