bandwidth playbook

1© 2002, Cisco Systems, Inc. All rights reserved.DOCSIS Security

Bandwidth Playbook

Thwarting Fiber-to-the-Home Competition

John J. DowneyBroadband Network Engineer

Cisco [email protected]


Agenda

• Speeds and Feeds– Competitive Outlook (FiOS)– Objectives– Current & New Speed Offerings

• Future Evolution Options

• Cablevision’s Choice– Configs– Cabling Ideas– Other Ideas

• New Technology Cornerstones


Speeds and Feeds


Objectives

• Use existing HFC network

• Separation of tiers of service

• Bandwidth usage monitoring/shaping

• Security Issues - mitigate “hackers”

• Number of subs per port


Current and New Speed Offerings

• Typically 1 tier at 3M DS by 384K US

• MSOs using 1.1 to migrate to multiple tiers of service– Dial-up replacement 128K x 128K– Low to Med speed 1M x 256K or 3M x 384K– High speed 5-7M x 512-768K

• Offerings from Verizon– 10x2 Mbps, 20x5, & 30x5 FTTH

• New residential & commercial offerings– 15x2 - Cox– 10x1, 15x2, 30x5 - CV– 16x2 - Comcast– 20x? - RCN


Usage Patterns

• Changing “cap” at same price may not have linear affect

– Average usage may be less than extrapolated

– Customers that use a lot of P2P services may look more appealing to others outside network

– Offering 15 Mbps at 100:1 oversell allows 200 subs/DS & may be fine, but needs to be observed over time

• Customers paying for higher “cap” could feel compelled to get their moneys worth and use much more than previous

• Usage could increase exponentially

– Customers become more computer savvy

– Other applications become prolific or just temporary

• Equates to an over-subscription calculation that must be re-evaluated and probably decreased


DS Speed Affected by:

• Usable rate and frame size

• Modem – Config file, CPU (PPS), & Ethernet

• Transport layer– TCP or UDP– US speeds & windowing affect TCP

• Max DS burst - perception is reality– VoIP jitter?

• Computer OS and Windows stack


US Speed Affected by:

• Rate limit & other traffic

DOCSIS Protocol

• Map advance, DS interleaving & Modulation

• Concatenation

• Max concat & traffic burst settings

• Modulation profiles

• Fragmentation

• DOCSIS 1.0 CM?


Future Evolution Options


Solutions

1. Do nothing and watch the competition erode your subscriber base

2. Segment the fiber nodes

3. FTTC, FTTH(P), FTTWAP

4. “Bonding” US & DS DOCSIS channels


Option 1 - Same CMTS with Frequency Separation


Option 1 - Same CMTS with Freq Separation

• Map 2 DS freqs & 2 US Rxs into same node– Freq A serving Res subs & freq B serving new subs

• Utilize 256-QAM on both DSs– 36 Mbps per DS freq (depends on frame size)

• Utilize 3.2 MHz CW/16-QAM on both USs– 9 Mbps per US freq (depends on frame size)

• US and/or DS load balance– Allow res subs to use under-utilized commercial US

• Client-class processing "steers" Res subs to A & new subs to B

– Set DS freq and/or US Ch ID in CM’s config file


Separating CMs Through Client-Class Processing

CMTS

PC XMAC Address:

01:02:03:04:05:06

Cable Modem X

MAC Address:ab:cd:ef:01:02:03

scope24.1.1.0

.125-.255

ab:cd:ef:01:02:03

01:02:03:04:05:06

........

PC TagPC Class

PC tag

Client Entries

Scope10.1.1.0.2-.124

Res Modem Class Modem Tag

Modem Tag

ScopesClient Classes ScopeTags

Scope10.2.2.0.2-.124

INET Modem Class Modem Tag

Modem Tag

ScopesClient Classes ScopeTags

02:03:04:06:aa:06

Cable Modem Y

MAC Address:02:03:04:06:aa:06

Provisioning Server


Option 1 - Separating CMs via FDM & Provisioning

U0 = 20.0 MHz @ 3.2 MHzU0 = 23.2 MHz @ 3.2 MHz

DS0 = 453 MHz @ 256-QAMDS1 = 459 MHz @ 256-QAM

DS0

U0

U1

U2

U3

DS1

U0

U1

U2

U3


Option 1 - Questions to Answer

• Multiple DSs broadcast because of EDFAs?– Broadcast makes it difficult to achieve 1:1 DS-

to-node combining later down the road

• Nodes with 1 DS Rx & 2 US Txs?– Two DSs could be sent to node

– 1 US laser feeds US of 1 mac domain

– 2nd laser feeds US from other mac domain

– US frequency re-use possible


Option 1 – Pros and Cons


Option 1 - Pros

• Provides simple "get up and run" approach

• Only real modifications are:– Combining to map 2-4 USs to nodes– Ensure provisioning system steers them to proper

US ch

• US and DS load balancing possible– “Poor man’s” redundancy– Caution across cards - packet drops because no IM

alignment between cards

• If using mixed mode, then 2.0 CMs could burst at 64-QAM for ~ 13 Mbps


Option 1 - Pros (cont)

• 2 DSs at 256-QAM = ~ 72 Mbps

• 2 USs at 16-QAM / 3.2 MHz = ~ 18 Mbps

• Advanced phy features– Ingress cancellation and more FEC– 24-tap EQ & US interleave– A/D conversion

• 5x20U has advanced spectrum management, remote analyzing and per-CM FEC counters

– Available with 12.3(13) IOS & >


Option 1 - Cons

• Requires combining work

• Requires DS and US spectrum availability

• Moving to new DS requires new US

• Outage could make CMs register on incorrect DS & affect registration times

• CMs will need to be client-class processed with info in their DOCSIS config files

• What if an US port dies?


Option 2 - Separate CMTSs


Option 2 - Diagram

DS0

U0

U1

U2

U3

CMTS A

DS1

U0

U1

U2

U3

CMTS B

• Map US/DS ports from 2nd CMTS into existing nodes

• Connect 2nd CMTS to core network

• Provision Commercial CMs to proper freq & CMTS


Option 2 - Pros

• Hardware Isolation

• More processing power

• Future expansion and “poor-man’s” HA

• Separates “high speed” customers for NOC “clarity”

• Some systems use this for open access or to segregate Data form VoIP


Option 2 - Cons

• Second CMTS

• Will CPU max out if one chassis dies?

• More power draw & rack space in HE/hub

• Must integrate 2nd chassis to network

• Need address space for additional CMTS

• CMs could lock on wrong CMTS & IP bundle– IP address depletion– Packet drops (no IM alignment between chassis)– CM offline on one CMTS & online on another


Option 3 - Same as Option 1, but Utilizing ATDMA


Option 3 - Same CMTS Utilizing ATDMA

• Utilize ATDMA-only US ports for Commercial CMs

• Only allows 2.0 CMs to "see" US port & register

• Existing Res subs are blind to ATDMA port – Don't understand mac message 29 included in UCD

• Need to configure provisioning to block Commercial CMs from registering on 1.x US port

– Use provisioning to force specific DS freq or US Ch ID


• DS0/U0 = TDMA (1.x mode)

• DS1/U0 = ATDMA (2.0-only)

• Only allows 2.0 CMs to "see" DS1/U0 & register on it

Option 3 - Diagram

DS0

U0

U1

U2

U3

DS1

U0

U1

U2

U3


DOCSIS 2.0 Benefits


DOCSIS 2.0 – ATDMA Basics

• Introduces “docsis-mode” concept:– TDMA (traditional 1.x mode)

– ATDMA-TDMA (mixed 1.x and 2.0)

– ATDMA (2.0-only)

• Use “cable upstream x docsis-mode {}” to configure US channel to a desired mode

– Automatically picks a new default mod profile


DOCSIS 2.0 Benefits

• Greater spectral efficiency– Better use of existing channels

– More capacity

• Provides higher throughput in US direction– Per-CM speed greater with better PPS

• Robust against worst-case plant impairments– Although not part of spec, ingress cancellation

allows higher orders of modulation

– Opens unused portions of spectrum

– Insurance for life-line services


DOCSIS 2.0 Benefits

• IUCs added for 1.x/2.0 mixed environment– 9 = a-short, 10 = a-long, 11 = a-ugs

• Better statistical multiplexing– 6.4 MHz channel is better than 2, 3.2 channels

• Increases US capacity to 30.72 Mbps

• Enhances flexibility when used in combination with Virtual Interfaces

– 1x1 MAC domain makes more sense


DOCSIS 1.1 Phy Change (PRE-EQ)

• US equalization is supported on all cards for 1.0 and 1.1– 8-tap blind equalizer

• 1.1 allows 'pre-equalization' where EQ coefficients are sent allowing a CM to pre-distort its signal

– Cab up x equalization-coefficient

• Supported on all linecards and releases that support 1.1– Requires 1.1 capable CMs, but not .cm file– Configurable option

• 2.0 increases the equalizer tap length from 8 to 24– Supported on U cards in ATDMA mode– Off by default


Amplitude Ripple/Tilt

• 6.4 MHz ATDMA signal exhibits severe in-band tilt at US port

• Pre-EQ in CM can compensate for nearly all tilt


Option 3 – Pros and Cons


Option 3 - Pros

• Allows 2 stacked US channels– Only appears as one for Res customers

• Allows less ports to be used since ATDMA USs operate at 27 Mbps usable speed

– If spectrum is available, 2.0 CMs could use a 6.4 MHz channel & 64-QAM, if clean enough

• Leverages 1 CMTS that’s already installed


Option 3 - Cons

• Requires new “high speed” users to have 2.0 CMs

• Requires provisioning work to "block" 2.0 CMs from registering on Res freq

• If Res subs buy their own 2.0 CMs, they could lock to commercial US w/o provisioning interdiction

– Use TLV 39=0 for res CMs

– Forces 1.x mode even if they are 2.0 capable

• Can’t utilize load balancing

– Configure mixed-mode with utilization-based LB

• May require dynamic freq hopping or mod changes


Cablevision’s Choice


New Architecture Idea Using Option 3

Ups

trea

m

US0

US2

US4

Unused

Dow

nstr

eam

DS0

DS1

DS2

DS3

DS4

US14

US12

US10

US8

US6

Unused

Unused

Unused

Slo

t 2/0

GE

Slo

t 1/0

GE

1x4609 Mhz

8x1

8x1

8x1

8x1

603 Mhz

603 Mhz

603 Mhz

603 Mhz

1x2

PR

E1

or P

RE

2P

RE

1 or

PR

E2

1x2

1x2

1x2

Node 1

Node 2

Node 3

Node 4

Node 5

Node 6

Node 7

Node 8

Slo

t 3/0

Em

pty

Slo

t 4/0

Em

pty

Slo

t 5/0


New Architecture Information

• DS0-DS3 are 1x2 MAC domains – Regular Tier

• DS4 is 1x8 MAC domain – Power Tier

• USs use connector assignments & freq stacked

• Boost Configuration:

– US: Up to 27 Mbps per node

– DS: ~25 Mbps @ 64-QAM or ~35 Mbps @ 256-QAM per 8 nodes

• Could be further segmented down to 4 nodes

• 4 US ports not used


Questions to Answer

• Back-office procedures & implementation, what happens when:

– New CM registers on wrong DS– Catastrophic failure on entire node– Residential sub buys their own 2.0 CM– CMs move between DSs and/or US ports

• Physical implementation– Is DS spectrum available for 256-QAM– Can US laser handle multiple carriers and

higher modulation schemes


CMTS Configuration


Lab Testing Procedures and Verification

• uBR10k with PRE1 running 12.3(9a)BC4

• Verified the following features:– Dual DS and US frequency to same node– Virtual Interfaces– ATDMA-only US– Frequency Stacking– 1x2 and 1x8 MAC domain– CM config file with specific DS freq configured

• Used Cablevision’s CMTS config as much as possible

• Broadband Access Center for Cable (BACC) used for provisioning, DHCP, ToD and TFTP


CMTS Linecard Configuration

interface Cable8/1/0

cable downstream modulation 256qam

cable downstream frequency 603000000

cable downstream channel-id 0

cable downstream rf-power 58

cable upstream max-ports 2

cable upstream 0 connector 0 shared

cable upstream 0 frequency 25008000

cable upstream 0 channel-width 3200000

cable upstream 0 minislot-size 2

cable upstream 0 modulation-profile 23

no cable upstream 0 shutdown





















cable upstream 1 docsis-mode atdma






Configuration (cont)






































Concerns

• IP Address Implications

– How to prevent IP address exhaust during ranging onto incorrect DS freq

• CM issues with multiple DS & US freqs?

– Long time to register (CMs cache DS freq)

• Power level when 2nd US freq added?

– CMTS performs pwr on per-US freq & CW

– Analog front-end could overload & cause harmonics

• Per-CM speeds


Concerns (cont)

• Maybe laser clipping from adding additional freqs and higher modulation schemes

• How to scale 1x8 and 1x2 MAC domains as utilization increases?

– Take into account RF connections, provisioning, etc.

• Bandpass filters in plant

• US diplex filter range– 5-30, 5-40/42, 5-55, 5-65, …


Another Idea to Utilize All “JIBs”

DS0

U0/C0

U1/C2

1x2

DS1

U0/C4

U1/C16

1x2

DS4

U0/C0

U1/C2

U2/C4

U3/C16

U4/C8

U5/C10

U6/C12

U7/C18

1x8DS 4 = 609 MHz

DSs 0-3 = 603 MHzMC5x20

DS2

U0/C8

U1/C10

1x2

DS3

U0/C12

U1/C18

1x2

DS Combiner

US Splitter

DS Splitter

Requires:

• 2 DS frequencies

• 2 US freqs in each node

• One US freq per DS

• 4 US ports not used

All USs at 28.5 MHz

All USs at 25 MHz


Using All US Ports (4, 1x3s and 1, 1x8)

DS0

U0&1/C0

U2/C2

1x3

DS1

U0&1/C4

U2/C6

1x3

DS4

U4/C2

U5/C6

U6/C10

U7/C14

U0/C16

U1/C17

U2/C18

U3/C19

1x8DS 4 = 459 MHz

DSs 0-3 = 453 MHzMC5x20

DS2

U0&1/C8

U2/C10

1x3

DS3

U0&1/C12

U2/C14

1x3

DS Combiner

US Splitter

DS Splitter

Requires:

• 2 DS freqs

• 3 US freqs in some nodes and only 2 in others

All USs at 28.5 MHz

All USs at 25 MHz


Cabling Ideas


Maxnet II Picts


Maxnet II Cabling


1 2 3 4 5 6 7 8 P1 P2 8 7 6 5 4 3 2 1

One RF Switch Option


New Technology Cornerstones


RP Memory SizeRP Memory Size

PRE1PRE1 PRE2PRE2

CM / STB support *CM / STB support *

512 MB512 MB 1024 MB

Up to 45K Up to 45K

FP Memory SizeFP Memory Size 1024 MB1024 MB 1024 MB

Toaster ProcessorsToaster Processors 3232 64

RP ClockRP Clock 267 MHz267 MHz 500 MHz

Toaster ClockToaster Clock 100 MHz100 MHz 150 MHz

Benchmark PPSBenchmark PPS 2.8 Mpps2.8 Mpps 6.2 Mpps

Packet BufferPacket Buffer 256 MB128 MB128 MB

Line Card InterconnectLine Card Interconnect 1.6 Gb/s1.6 Gb/s 3.2 Gb/s

Cisco uBR10012 HardwarePRE1 and PRE2 Specifications

* Dependant upon features enabled

64K +


New Technology Cornerstones

• DOCSIS 3.0 – Channel Bonding for higher capacity links

Enable faster HSD serviceM x N mac domains nowEnable Video over IP solutions

• M-CMTS – New Architecture for better economics

Lower cost DS PHYDe-couple DS and US ports

• DOCSIS 2.0b


uBR10012 Wideband Components

uBR10012 Base System

uBR10012

WB SIP

WB SPA

WAN INTERFACE 4x HH-GE

ROUTING ENGINE 2x PRE2 @6 Mpps RP Redundancy

DOCSIS CARDS 8x MC5X20 40 DS / 160 US ports per

Chassis

WIDEBAND SIP 1 WB SIP/Chassis 2 WAN Slots 2x WB SPA/WB SIP

EXTERNAL EDGE QAM Off-the-shelf VoD QAM

uBR10012 Wideband Kit WIDEBAND SPA

2x WB-SPA per Chassis 1Gbps/SPA (~24

QAMs/SPA) Redundant GE Output

(SFP)


Linksys Wideband Cable Modem WCM300

Performance and Throughput• 220 Mbps Wideband DS throughput • 30 Mbps US throughput

Compatibility• Supports Packet Bonding • Interoperable in a DOCSIS 3.0 environment • Full DOCSIS 2.0 capable

RF Characteristics • DS frequency range: 108 MHz – 850 MHz• US frequency range: 5 MHz – 65 or 88 MHz• DS capture range = 48 MHz

8 channels: Annex B, 6 channels Annex A• Channels do not need to be contiguous


uBR10012 Architecture Evolution

uBR10012

Today M-CMTS & DOCSIS 3.0

WidebandArchitecture


Future-Proofing

• HHGE cards

– 12.3(9)

• MCX cards

• M-CMTS architecture


Design 1: 2 WB Channels per 8 Nodes

Boost Configuration is unchangedWideband ConfigurationUS: Up to 27 Mbps per node shared w/ BoostDS: ~50 Mbps per 8 nodes at 64-QAMDS: ~70 Mbps per 8 nodes at 256-QAM

Up

stre

am

US0

US2

US4

Unused

Do

wn

stre

am

DS0

DS1

DS2

DS3

DS4

US14

US12

US10

US8

US6

Unused

Unused

Unused

Slo

t 2E

mpt

y

Slo

t 4

/0/0

HH

Gig

ES

lot 3

/0/0

HH

Gig

ES

lot 1

WB

SP

A

PR

E2

PR

E2

Slo

t 5

/0

1x4609 Mhz

8x1

8x1

8x1

8x1

603 Mhz

603 Mhz

603 Mhz

603 Mhz

1x2

1x2

1x2

1x2

eQAM

Node 1

Node 2

Node 3

Node 4

Node 5

Node 6

Node 7

Node 8

1x4

615 & 621 MhzCombined with Slot 5/1 RFCombined with Slot 6/0 RFCombined with Slot 6/1 RF

Combined with Slot 7/0 RFCombined with Slot 7/1 RFCombined with Slot 8/0 RFCombined with Slot 8/1 RF

4x1


Expanding Bandwidth to Design 1- Four WB Channels per 8 Nodes

Boost Downstream added to Wideband BGBoost USs added into 1x2 MAC domain (LB)US: Up to 6x27 Mbps per node (LB) shared w/ OptimumDS: ~100 Mbps per 8 nodes at 64-QAMDS: ~140 Mbps per 8 nodes at 256-QAM

Ups

trea

m

US0

US2

US4

US16

Dow

nst

rea

m

DS0

DS1

DS2

DS3

DS4

US14

US12

US10

US8

US6

US18

Slo

t 2W

B S

PA

Slo

t 4/0

/0H

H G

igE

Slo

t 3/0

/0H

H G

igE

Slo

t 1W

B S

PA

PR

E2

PR

E2

Slo

t 5/

0

8x1

8x1

8x1

8x1

603 Mhz

603 Mhz

603 Mhz

603 Mhz

1x2

1x2

1x2

1x2

eQAM

Node 1

Node 2

Node 3

Node 4

Node 5

Node 6

Node 7

Node 8

1x4

615 & 621 MhzCombined with Slot 5/1 RFCombined with Slot 6/0 RFCombined with Slot 6/1 RF


eQAM

609 & 627 Mhz

4x1

Combined with Slot 5/1 RFCombined with Slot 6/0 RFCombined with Slot 6/1 RF


609, 615,621 & 627 Mhz

1x3


Design 2: 6 WB Channels per 8 Nodes

Wideband ConfigurationUS: Up to 27 Mbps per node shared w/ BoostDS: ~150 Mbps per 8 nodes at 64-QAMDS: ~210 Mbps per 8 nodes at 256-QAM

eQAM

Up

stre

am

US0

US2

US4

Unused

Do

wns

tre

am

DS0

DS1

DS2

DS3

DS4

US14

US12

US10

US8

US6

Unused

Unused

Unused

Slo

t 2W

B S

PA

Slo

t 4/0

/0H

H G

igE

Slo

t 3/0

/0H

H G

igE

Slo

t 1W

B S

PA

1x4609 Mhz

8x1

8x1

8x1

8x1

603 Mhz

603 Mhz

603 Mhz

603 Mhz

615 & 621 Mhz

1x2

PR

E2

PR

E2

1x2

1x2

1x2

eQAM

eQAM eQAM

Node 1

Node 2

Node 3

Node 4

Node 5

Node 6

Node 7

Node 8

1x4

4x1

639 & 645 Mhz627 & 633 Mhz

Combined with Slot 5/1 RF







Slo

t 5

/0


Other Commercial Offerings

• T1/E1 offerings (CEoIP or BSoD)

• PCMM

• DOCSIS WIC

• MPLS-VPN / L2VPN

• BoD

• RS-DVR, Start-over & Lookback


CESoIP Config File03 (Net Access Control) = Yes

22 (Upstream Packet Classification Block) S01 (Classifier Reference) = 1 S03 (Flow Reference) = 2 S05 (Rule Priority) = 1 S06 (Activation State) = 1 S09 (IP Packet Classification) T02 (IP Protocol) = 257 T07 (Source Port Start) = 2142 T08 (Source Port End) = 2142 T09 (Destination Port Start) = 2142 T10 (Destination Port End) = 2142

23 (Downstream Packet Classification Block) S01 (Classifier Reference) = 2 S03 (Flow Reference) = 5 S05 (Rule Priority) = 1 S06 (Activation State) = 1 S09 (IP Packet Classification) T02 (IP Protocol) = 257 T07 (Source Port Start) = 2142 T08 (Source Port End) = 2142 T09 (Destination Port Start) = 2142 T10 (Destination Port End) = 2142

24 (Upstream Service Flow Block) S01 (Flow Reference) = 1 S06 (QoS Parameter Set Type) = 7 S07 (Traffic Priority) = 3 S08 (Max Sustained Traffic Rate) = 2000000 S15 (Service Flow Scheduling Type) = 224 (Upstream Service Flow Block) S01 (Flow Reference) = 2 S06 (QoS Parameter Set Type) = 7 S15 (Service Flow Scheduling Type) = 6 S16 (Request/Transmission Policy) = 511 S19 (Unsolicited Grant Size) = 1052 S20 (Nominal Grant Interval) = 10000 S21 (Tolerated Grant Interval) = 2000 S22 (Grant/Interval) = 225 (Downstream Service Flow Block) S01 (Flow Reference) = 4 S06 (QoS Parameter Set Type) = 7 S07 (Traffic Priority) = 3 S08 (Max Sustained Traffic Rate) = 200000025 (Downstream Service Flow Block) S01 (Flow Reference) = 5 S06 (QoS Parameter Set Type) = 7 S07 (Traffic Priority) = 5 S08 (Max Sustained Traffic Rate) = 170000029 (Privacy Enable) = yes


• Cable HWIC/WIC will deliver DOCSIS 2.0 & EuroDocsis/J-Docsis compliant HFC interface (Cable)

• Utilizing Broadcom chipset

• Dual mode, able to operate as WIC or HWIC

• Packetcable Multimedia Support

• DOCSIS QoS & IOS router QoS interaction

• Offering 2 SKUs + Fixed-config cable router

• Modular Platform support:

1841, 2800, 3800, IAD243x

2691, 3700 (post FCS)

Broadcom DOCSIS 2.0 CM daughter card

Cable HWIC/WIC Overview

Enabling Cable Commercial Services with Cisco ISR


Cable HWIC/WIC (cont)

• Additional Features (post FCS):

– Multiple Cable HWIC support per router

– TDM clock sync with DOCSIS clock

• Program Update

– Customer Beta in progress at:

Cox, TWC, Sprint, Charter, Bresnan, UPC Broadband & Essent Kablecom

• Performance evaluation

– CableLabs cert: Cable HWIC + ISR submit in July, 06

– Tcomlabs cert for EuroDocsis: targeting Aug, 2006


Cisco 815 Fixed-Config Cable Router

10/100Port

Cable WICCable WICCable WICCable WICConsole

Port

4 Port Managed4 Port Managed10/100 Switch10/100 Switch

4 Port Managed4 Port Managed10/100 Switch10/100 Switch

AUXPort

• Key Features

• Integrated DOCSIS 2.0 CM WIC

• Integrated 4 Port 10/100 Managed Switch

• IEEE 802.1Q VLAN

• Spanning Tree

• One additional Fast Ethernet Port• WAN backup, DMZ

• IOS Advanced Routing and QoS• RIP, OSPF, BGP, EIGRP

• Optional Upgrade:• VPN/Firewall/IPS/Easy VPN Security

• IPSec 3DES Hardware Acceleration

Replacement for uBR905!


Cisco 815 & uBR905 Comparison

uBR905 Cisco 815Cable Modem DOCSIS 1.1 DOCSIS 2.0

LAN 4-Port 10T Hub 4-Port 10/100 Managed Switch

10/100 WAN Backup No Ext. Dial Backup

802.1Q VLAN No Yes (16 VLANs)

Advanced Routing, QoS

RIP, Basic QoS RIP, OSPF, BGP, Adv QoS

Security IPSec VPN, FW, EZVPN

IPSec VPN, FW, IPS, EZVPN, DMVPN, NAC

IPSec VPN 4-5 Mbps 8 Mbps (target)


Cable Access Router PortfolioComplete Offerings for Cable Operators

2691/2800 w/ Cable HWIC

3700/3800 w/ Cable HWIC

Primary WAN Primary WAN, WAN Backup, WAN offload

IAD243x w/ Cable HWIC

Mu

ltis

ervi

ce C

apab

ilit

ies

Cable HWIC can be used with 12 different modular router models

1841 w/ Cable HWIC

815 Fixed Config

Enterprise BranchSMB/Small BranchSOHO


Summary

• Separation of tiers of service

• Math & new designs are beginning steps

• Monitor actual traffic load and manage fair use of network

• Bandwidth usage monitoring/shaping

• Determine when additional capacity is necessary

bandwidth playbook

Documents