Olicom CrossFire 8730 Installation Manual page 19

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IEEE 802.1Q support for the Fast Ethernet ports
— This standard frame-tagging protocol is used by the Fast Ethernet ports to
carry frames belonging to different VLANs over the same physical Fast
Ethernet link.
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CrossLink high-speed inter-switch connection using Token-Ring ports
(up to 256 Mbps using eight Token-Ring ports)
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Advanced filtering (MAC address / Protocol)
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VLAN (Virtual LAN) support
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Support for transmission priorities
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Congestion control
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IP multicasts address translation
— IP multicasts translated to a single functional address on the Token-Ring
side, and IP multicasts on the Token-Ring side translated to multiple MAC
addresses on the Ethernet side.
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IP fragmentation
— IP fragmentation makes it possible to easily connect IP networks between
Token-Ring and Ethernet networks. The IP fragmentation scheme ensures
that IP packets larger than 1500 bytes are split up before transmission to
the Ethernet LAN.
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NetBios addresses translation
— Translation of NetBios functional address from the Token-Ring side to a
specific Ethernet group address, and frames with an additional functional
addresses from Token-Ring side are not forwarded on the Ethernet side.
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Dual home FEP
— A Token-Ring network using Source Route Bridging (SRB) can support
duplicate MAC addresses. This capability has been exploited by SNA
(Systems Network Architecture) gateways, which can provide a redundant
host connection: two gateways have the same MAC address but are on
different rings and due to the source routing discovery process the SNA
sessions are randomly distributed between the two gateways. Sessions are
established between configured MAC addresses.
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Broadcast Suppression
On output, the Fast Ethernet ports must keep the rate of broadcast
frames sent to Ethernet within the limit set by the Max
Broadcast Rate (frames/sec) parameter that defines the
maximum broadcast frame count per second. Broadcasts include:
CrossFire 8730 Switch Installation Guide, DOC-7046 v. 1.2
9
Introduction