atm vs gige the breakfast club jq - j ohns q uarterly high quality gentlemen's magazine
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ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
JQ - John’s Quarterly
High Quality Gentlemen's Magazine
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
The Great The Great ATM Vs GigEATM Vs GigE
DebateDebate
Cover Story: Cover Story:
Author: John A. ClarkAuthor: John A. Clark
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Desktop ConnectivityDesktop Connectivity
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0.5
1.0
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2.0
2.5
3.0
3.5
4.0
4.5
1995 1996 1997 1998 1999 2000
Ethernet Fast Ethernet Token Ring FDDI ATM
Industry analysis shows Ethernet is the clear choice for the desktopIndustry analysis shows Ethernet is the clear choice for the desktop Token Ring important in vertical marketsToken Ring important in vertical markets ATM to-the-desk for niche applicationsATM to-the-desk for niche applications
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Backbone ComparisonsBackbone Comparisons Ease of Use/CostEase of Use/Cost Standards StatusStandards Status Compatibility IssuesCompatibility Issues Network Speed/distanceNetwork Speed/distance Supported ApplicationsSupported Applications Network ManagementNetwork Management Network ResilienceNetwork Resilience Routing/Layer 3 switchingRouting/Layer 3 switching
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Ease of Use / CostEase of Use / Cost
Gigabit-EthernetGigabit-Ethernet Just “Plain Old Just “Plain Old
Ethernet” but many Ethernet” but many differencesdifferences
Not many New Skills Not many New Skills RequiredRequired
Low Risk / Low CostLow Risk / Low CostFeelingFeeling
ATMATM Now solid proven Now solid proven
technology - many technology - many reference installationsreference installations
Anchorage Accord Anchorage Accord simplifies ATM forum simplifies ATM forum standardsstandards
Some Administrative Some Administrative & Training Costs& Training Costs
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Standards StatusStandards StatusGigabit-EthernetGigabit-Ethernet
802.3z802.3z Q1’98Q1’98 802.3ab802.3ab Q1’99Q1’99 802.3ax802.3ax NewNew
Flow ControlFlow Control 802.1P802.1P OKOK 802.1Q802.1Q Q1’98Q1’98 RSVP, RTP…RSVP, RTP… ????
ATMATM LANE 2.0LANE 2.0 OKOK MPOA 1.0MPOA 1.0 OKOK NHRPNHRP OKOK Sig 4.0Sig 4.0 OKOK TM 4.0TM 4.0 OKOK Anchorage Accord Anchorage Accord
combined standardcombined standard
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Compatibility IssuesCompatibility IssuesGigabit-EthernetGigabit-Ethernet
Up to now only One-Up to now only One-on-One Testingon-One Testing
More Recently More Recently Gigabit-Ethernet Gigabit-Ethernet AllianceAlliance
ATMATM Many Independent Many Independent
Compatibility and Compatibility and Performance Tests Performance Tests are Availableare Available
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Network Speed/DistanceNetwork Speed/Distance
Gigabit-EthernetGigabit-Ethernet 1000BaseCX: 25m1000BaseCX: 25m 1000BaseSX: 300m1000BaseSX: 300m 1000BaseLX: 550m 1000BaseLX: 550m
MM/3km SMMM/3km SM 1Gbps limit 1Gbps limit Network Diameter Network Diameter
Restrictions when Restrictions when SharedShared
ATMATM 25Mbps25Mbps 155Mbps - OC3c155Mbps - OC3c 622Mbps - OC12c622Mbps - OC12c
800m MM/15km SM800m MM/15km SM 2.4Gbps - OC48c … 2.4Gbps - OC48c …
no theoretical limitno theoretical limit No Network Diameter No Network Diameter
RestrictionsRestrictions
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Supported ApplicationsSupported ApplicationsGigabit-EthernetGigabit-Ethernet
Pure LAN TechnologyPure LAN Technology Traffic Type: DataTraffic Type: Data QoS: Rudimentary: QoS: Rudimentary:
RSVPRSVP Flow Control: All-or-Flow Control: All-or-
Nothing, Localised Nothing, Localised (Impact on QoS ?)(Impact on QoS ?)
Enough Bandwidth to Enough Bandwidth to support everything …. support everything …. at the momentat the moment
ATMATM LAN / MAN / WANLAN / MAN / WAN Traffic Types: Data, Traffic Types: Data,
Voice, Video, …Voice, Video, … QoS: Sophisticated QoS: Sophisticated
CBR, UBR, ABR, …CBR, UBR, ABR, … Flow Control: Rate Flow Control: Rate
Based, End-to-EndBased, End-to-End New APIs will use New APIs will use
QoS and Optimise QoS and Optimise Traffic for Specific Traffic for Specific ApplicationsApplications
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Network ManagementNetwork Management
Gigabit-EthernetGigabit-Ethernet Simple Adaptation of Simple Adaptation of
Ethernet MIBs and Ethernet MIBs and Actual ApplicationsActual Applications
ATMATM ATM Forum MIBs and ATM Forum MIBs and
Proprietary MIBs in Proprietary MIBs in current usecurrent use
WAN MIBs to be WAN MIBs to be finalisedfinalised
ATM complexity ATM complexity introduces some introduces some Network Management Network Management challengeschallenges
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Network ResilienceNetwork ResilienceGigabit-EthernetGigabit-Ethernet
Spanning Tree Spanning Tree Protocol blocks Protocol blocks parallel links - stability parallel links - stability issues?issues?
No standards based No standards based load-sharing - Mostly load-sharing - Mostly proprietaryproprietary
Use of OSPF / RIP Use of OSPF / RIP with Layer 3 switchingwith Layer 3 switching
ATMATM Build-in RedundancyBuild-in Redundancy Parallel Load-sharing Parallel Load-sharing
links for resilience & links for resilience & aggregate bandwidthaggregate bandwidth
Full Meshed Full Meshed TopologiesTopologies
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
Routing/Layer 3 SwitchingRouting/Layer 3 Switching
Gigabit-EthernetGigabit-Ethernet Routing via high Routing via high
100/1000 Mbps links100/1000 Mbps links VLAN trunks with VLAN trunks with
IEEE 802.1Q comingIEEE 802.1Q coming Layer 3 hardware Layer 3 hardware
routing switches with routing switches with n Mbps throughout/ n n Mbps throughout/ n uusec latencysec latency
ATMATM Routing via high 100 Routing via high 100
Mbps links Mbps links (1000Mbps to follow)(1000Mbps to follow)
VLAN trunks with VLAN trunks with ATM VNR provenATM VNR proven
Layer 3 switching via Layer 3 switching via ATM Forum MPOA ATM Forum MPOA rolling out during 98rolling out during 98
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
What’s Your What’s Your Backbone Backbone Made Of?Made Of?
Backpage Questionnaire:Backpage Questionnaire:
10 questions to tell if you’re 10 questions to tell if you’re an “A” or a “G”an “A” or a “G”
ATM Vs GigEATM Vs GigE The Breakfast ClubThe Breakfast Club
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