IBM 8265 Nways ATM Switch, Product Description, Page: 34 / 100

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IBM 8265: Product Description
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VP Tunneling
– Support of interconnection of ATM campus switches over an ATM WAN
providing permanent virtual paths (PVPs). The signalling channel is
transparently passed to the WAN.
– Support of VP multiplexor.
– Support of multiple VPs of differing types (UNI, IISP, PNNI) on the same
physical interface.
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Virtual Path Assignment per Quality of Service (QOS)
– Allows traffic of different QOS to be split over different virtual paths sharing
the same physical ATM interface. This is a key function when connecting to
WAN ATM carrier services or to a WAN ATM switch, such as the IBM Nways
2220 Broadband Switch.
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Link Redundancy
– Supported on physical and VP tunnel interfaces regardless of interface type
(UNI, IISP, or PNNI).
– Link selection can be based on a load balancing algorithm, if all the parallel
links share the same ‘Administrative Weight’, or on the lowest ‘Administrative
Weight’.
– Automatic Call Setup rerouting on the next best-fit link in case of failure on the
selected link.
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Link Sharing Control
– Allows the network administrator to limit the proportion of the link bandwidth
(or VP tunnel) that can be reserved by reserved bandwidth connections (CBR,
rt VBR, nrt VBR, Minimum Cell Rate of ABR). This is supported on all
interface types (UNI, IISP, PNNI).
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Switch Access
– Support of Classical IP over ATM (CIP, RFC 1577) for switch management
and services.
– Support of LAN Emulation Client for Ethernet and Token-Ring for Switch
management and services.
User Plane (Hardware)
– ATM layer switching
– Support of reserved bandwidth connections
– Support of unspecified bit rate (UBR) and available bit rate (ABR) connections
– Support of frame discard.