Cisco Public Carrier Ethernet Design€¦ · Billing Content Farm VOD TV SIP Content Farm VOD TV...
Transcript of Cisco Public Carrier Ethernet Design€¦ · Billing Content Farm VOD TV SIP Content Farm VOD TV...
©2007 Cisco Systems, Inc. All rights reserved.
Presentation_ID
1Cisco Public
Carrier Ethernet Design
Mar 2007
Josef Ungerm
an, CCIE #6167
Consulting Systems Engineer
Cisco, Central & Eastern Europe
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
2
Agenda
Carrier Ethernet and IP NGN Architectures
•what network architecture is the best for me?
•where should I put my services edge?
Carrier Ethernet Hardware Usage
•ES20 –what does it bring to me?
•Where to put it in my network?
L2 Access Redundancy
•How to connect my access domain to 7600?
•Rings, stars, REP, MST, Flexlink –I’m lost.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
3
Agenda
Carrier Ethernet and IP NGN Architectures
•what network architecture is the best for me?
•where should I put my services edge?
Carrier Ethernet Hardware Usage
•ES20 –what does it bring to me?
•Where to put it in my network?
L2 Access Redundancy
•How to connect my access domain to 7600?
•Rings, stars, REP, MST, Flexlink –I’m lost.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
4
Access
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Portal
Subscriber
Database
Monitoring
Policy
Definition
Billing
FR
Mobile
TDM
ISDN
Business
Corporate
Residential STB
Policy Control Plane (per subscriber)
Aggregation
Where is it going from: Aggregation 2000
ATM
SDH
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
5
Access
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Portal
Subscriber
Database
Monitoring
Policy
Definition
Billing
DSL
Mobile
ETTH
Business
Corporate
Residential STB
Policy Control Plane (per subscriber)
Where is it going from: Aggregation 2005
Aggregation
Untagged
Single tagged
Double tagged
802.1q
802.1ad
etc
Metro Ethernet
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
6
What is Carrier Ethernet?
Makin
g L
AN
Eth
ern
et
su
itab
le f
or
rep
lacin
g A
TM
/SD
H
�Scalability
–Going beyond 4K VLAN’sand keep the flexibility
�Reliability
–Going beyond Spanning Tree (50ms/FRR, fault detection, 1+1)
�Dynamic signaling
–DLDP-set pseudowires(PVC vs. SVC)
�Service M
anagement
–OAM to Provision, Monitor, Diagnose and Resolve Issues
�Standardized Services
–Standard EVC, E-Line, E-LAN (MEF)
–de-facto standard Residential Quad-Play (incl. IPTV, Mobile)
–de-facto standard Business IP VPN (inc. H-QoS)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
7
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Policy Control Plane (per subscriber)
Carrier Ethernet –Centralized Design
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
U-PE
N-PE
N-PE
Carrier Ethernet + IP/MPLS
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
8
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –Centralized Design
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
U-PE
N-PE
N-PE
Carrier Ethernet + IP/MPLS
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
9
Residential Services Architecture
Residential Services Architecture
Residential Services Architecture
Access Node UNI and connectivity models:
•Non Trunk UNI, N:1 VLAN
•Trunk (Multi VC) UNI, N:1 Service VLAN
•Trunk (Multi VC) UNI, 1:1 Internet Access VLAN
These models are the base line in TR-101 and
present in existing Access Nodes implementations
La
rge
Sca
le
Aggregation
Inte
llig
en
t
Edge
Mu
ltis
erv
ice
Core
Eff
icie
nt
Access
U-PE Node
BNG
PPP, IP, MPLS
MPLS
MPLS / IP
DSL, WiMAX, Ethernet
IP Model
VoD, IPTV, VoIP
N:1, 1:1 VLAN models
EoMPLS Pseudowire
HSI, VoIP
Access Node
N:1 VLAN model
BNG
N-PE Node
PIM and IGP control plane
IP unicast/multicast data plane
EoMPLS PW
HSI IP service subnet
3Play IP service subnet
Single PW per Aggregation Node
Ethernet UNI
MPLS/IP Model
VoD, IPTV, VoIP
N:1 VLAN model
MPLS/IP data plane
VoD control plane: LDP, RSVP-TE
TV control plane: PIM, 2ndIGP
3Play IP service subnet
Ethernet UNI
Ethernet UNI
MPLS NNI
L2 Aggregation
L3 Aggregation
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
10
Business Services Architecture
Business Services Architecture
Business Services Architecture
Ethernet UNI
MSE implements service
network forwarding and
access SLA enforcement
MSE implements service
network forwarding and
access SLA enforcement
Aggregation Network implements a transport
function based on EoMPLS pseudowires
La
rge
Sca
leAggregation
Inte
llig
en
tEdge
Mu
ltis
erv
ice
Core
Eff
icie
nt
Access
IP, MPLS
MPLS
MPLS / IP
DSL, WiMAX, Ethernet
Business
E-LINE
Business
E-LAN
EoMPLS PW
EoMPLS Pseudowire
VPLS
Business
L3 VPN
EoMPLS PW
MPLS-VPN
U-PE Node
MSE
Access Node
MSE
N-PE Node
Ethernet
QinQ
Ethernet
QinQ
Ethernet
QinQ
Ethernet UNI
Ethernet UNI
Port, 1Q, QInQ
Port, 1Q, QinQ
Port, 1Q, QinQ
MSE implements service
network forwarding and
access SLA enforcement
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
11
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –Centralized Design
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
U-PE
N-PE
N-PE
Carrier Ethernet + IP/MPLS
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
12
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –MPLS NNI
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
MPLS
Aggregation
U-PE
N-PE
N-PE
Carrier Ethernet + IP/MPLS
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
13
Centralized
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –New Service Edges
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
MPLS
Aggregation
N-PE
N-PE
Distributed
Services
Edge
PE
Carrier Ethernet + IP/MPLS
Q: Which Services Edge to put where??
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
14
La
rge
Sca
leAggregation
Inte
llig
en
tEdge
Mu
ltis
erv
ice
Core
Eff
icie
nt
Access
IP, MPLS
MPLS
MPLS / IP
DSL, WiMAX, Ethernet
Business
E-LINE
Business
E-LAN
H-VPLS
Business
L3 VPN
MPLS-VPN
U-PE Node
Access Node
N-PE Node
EoMPLS
MPLS NNI
Inter AS, PW switch
Port, 1q, QinQ
Port, 1Q, QinQ
Port, 1Q, QInQ
Aggregation Network Service Edge
Business Ethernet Services Architecture
Aggregation Network Service Edge
Business Ethernet Services Architecture
Implements service
network forwarding and
access SLA enforcement
MPLS NNI
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
15
Flexible Service Edge Placement
acco
rdin
g t
o p
en
etr
ati
on
, co
mp
lexit
y, g
row
th…
ACCESS
AB
CD
MSE
Multiservice Edge
VLAN
EoMPLS Pseudowire
Full BGP
VLAN
VLAN
EoMPLS Pseudowire
E-LAN (H-VPLS)
VLAN
VLAN
7600 U-PE
Aggregation Node
7600 N-PE
Distribution Node
VLAN
Internet VRF
VLAN
IP VPN
IPTV VPN
DSLAM
CRS-1 P
Core Node
PoP
CORE
MAN
VLAN
E-Line
PROVISIONING POINTS
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
16
Centralized
Services
Edge
BRAS
PE
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –New Service Edges
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
MPLS
Aggregation
N-PE
N-PE
Distributed
Services
Edge
PE
Carrier Ethernet + IP/MPLS
Q: Which Services Edge to put where??
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
17
Core Network
MPLS /IP
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –Distributed Design
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
N-PE
N-PE
Distributed
Services
Edge
PE
Carrier Ethernet + IP/MPLS
The old Centralized Edge does not have to be in every PoP!
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
18
Services
Edge
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Carrier Ethernet –Integrated Design
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
CN
CN
Distributed
Services
Edge
PE
Carrier Ethernet + IP/MPLS
Core Network
MPLS /IP
IPoDWDM
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
19
Services
Edge
Identity
Address
Mgmt
Subscriber
Database
Monitoring
Policy
Definition
Billing
Content Farm
VOD
TV
SIP
Content Farm
VOD
TV
SIP
Policy Control Plane (per subscriber)
Programmable Carrier Ethernet vision
Access
Portal
DSL
Residential STB
Mobile
ETTx
PON
MSPP
Cable
Business
Corporate
Residential STB
Aggregation
CN
CN
Carrier Ethernet + IP/MPLS
Core Network
MPLS /IP
IEN -
Integrated
Edge Node
BRAS,
ISG, DPI
IPoDWDM
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
20
Agenda
Carrier Ethernet and IP NGN Architectures
•what network architecture is the best for me?
•where should I put my services edge?
Carrier Ethernet Hardware Usage
•ES20 –what does it bring to me?
•Where to put it in my network?
L2 Access Redundancy
•How to connect my access domain to 7600?
•Rings, stars, REP, MST, Flexlink –I’m lost.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
21
Section
Section
Carrier Ethernet and Cisco 7600
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
22
Ethernet/SONET/SDH
Ethernet/ DWDM
IP/MPLSand Ethernet
Cisco Carrier Ethernet Portfolio
Cisco Carrier Ethernet Solutions Deliver:
�Architectural Flexibility –Network Convergence
�Service Richness –Complete Solutions
�MEF9 and MEF 14 Certified
�Portfolio Breadth –End to End Manageability (Ethernet OAM)
CRS-1
ONS
153xx
ONS
15454
ONS
15600
Catalyst
6500
ME 3400
Catalyst
4500
12000 / XR 12000
ME 3750
Cisco
72xx/73xx
ME 4924
ME 6524
ASR 1000
Cisco
10000
Cisco
7600
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
23
What does it bring?
•Up to 32k EVCsper system (16k per card)
•Up to 32K Pseudowires(16k per card)
•Multipoint VPLS & H-VPLS
•Ethernet and MPLS OAM interworking
•Flexible VLAN translation
•Hierarchical QOS (16K, resp. 32K queues)
Pricing?
•X6724 LAN card = $625 per GE port (GPL)
basic L2/L3 features set
•ES20-GE card = $2000 per GE port (GPL)
for Triple-Play and L2 VPN services
•ES20-ADVIP-LIC = $4000 per GE port (GPL)
in-service upgrade to L3 VPN services
ES20 –2-port 10GE
ES20 –20-port GE
Hardware: 7600 Ethernet Service Modules
SIP-400 –4x SPA
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
24
•The Flexible Ethernet UNI
defines a unique, virtual
L2 or L3 service instance
per customer
•A service instance can be a
MAC address, VLAN, Q-in-Q
VLAN, L2 VPLS pseudowire,
IP address, or L3 MPLS VPN
•For each service instance,
Flexible UNI offers:
•Unique ID with service
separation via VLAN or MAC
translation
•H-QoS with shaping per VC
•IP+MAC spoofing prevention
•Ethernet and MPLS OAM
•Each service instance can in
turn be flexibly mapped to:
•L2: Pseudowires, H-VPLS
•L3: IP, IPv6, MPLS VPN
L3 IP, IPv6
L3 MPLS VPN
EoMPLS, H-VPLS
L2, Point to Point
L2, Bridged
L2/L3 integration
H-QoS
per
EFP
Flexible
MAC / VLAN
Translation
1:1
2:2
1:2
Security
OAM
SBC
Video
OSS / Policy Management
Software: IOS EVC infrastructure
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
25
Section
Section
ES card placement
L2 designs
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
26
N-PE U-PE
P / PE
LAN Card
ES20 or SIP
Base Design:Carrier Ethernet Network
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
27
Base Design 1:RSTP-based Aggregation
VLAN
101VLAN
101
N-PE U-PE
switchport
switchport
VLAN
INSTANCE
VLAN
INSTANCE
BRAS / PE
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
28
Base Design 1:RSTP-based Aggregation
VLAN
101VLAN
101
N-PE U-PE
switchport
switchport
VLAN
INSTANCE
VLAN
INSTANCE
B
BRAS / PE
L
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
29
Base Design 1:RSTP-based Aggregation
VLAN
101
VLAN
102
VLAN
101
VLAN
102
N-PE Scalabitity
•# of VLANs:
4K
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
4K
•# of MACs:
32K/56K/80K
Other Limits
•PVST VLANs per card: 1800
•MST VLANs per card: 6000
N-PE U-PE
switchport
switchport
VLAN
INSTANCE
VLAN
INSTANCE
BB
BRAS / PE
Advantages
•simple, inexpensive
•active-active
•learning can be turned off
(manual or auto/cGVRP)
Can be any Cisco switch
•Catalyst 6500, 4500, ME…
LL
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
30
Base Design 2:MPLS-based Aggregation
VLAN
100
VLAN
100
VLAN
101
VLAN
102
N-PE Scalabitity
•# of VLANs:
4K
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
4K
•# of MACs:
unlimited
Other Limits
•4K pseudowiresper N-PE
N-PE U-PE
subinterface
subinterface
eompls
pseudo
wire backup
pseudowire
Advantages
•no STP limits
•dynamic PW re-routing
•MPLS TE, MPLS FRR
•active/backup PW
VLAN
INSTANCE
VLAN
INSTANCE
BRAS / PE
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
31
Puzzle #1:Edge-facing
VLAN
100
VLAN
102
VLAN
101
VLAN
101
N-PE Scalabitity
•# of VLANs:
32K
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
32K
•# of MACs:
unlimited
N-PE U-PE
EVC service
subinterface
eompls
pseudo
wire backup
pseudowire
Advantages at N-PE
•PW Scalability (no global
VLAN instance is consumed)
•EVC and Flexible QinQ
•Per-Port VLAN significance
•Flexible VLAN translations
•Flexible QinQ CoS mapping
ES20 Card
VLAN
INSTANCE
BRAS / PE
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
32
Puzzle #2:Customer-facing
VLAN
100
VLAN
100
VLAN
101
VLAN
102
N-PE Scalabitity
•# of VLANs:
32K
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
32K
•# of MACs:
unlimited
N-PE U-PE
subinterface
EVC service
eompls
pseudo
wire backup
pseudowire
Advantages at U-PE
•PW Scalability
•EVC and Flexible QinQ
•Per-port VLAN significance
•Flexible VLAN translations
•Flexible QinQ CoS mapping
•HQoSfor L2 VPN Customers
•2 priority Queues (voice/video)
•ELMI for L2 VPN Customers
ES20 Card
or SIP-400
VLAN
INSTANCE
BRAS / PE
Services Edge:
•E-Line, E-LAN
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
33
Puzzle #3:U-PE uplink
VLAN
100
VLAN
100
VLAN
101
VLAN
102
N-PE Scalabitity
•# of VLANs:
32K
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
32K
•# of MACs:
80K/unltd.
Other Limits
•4K VPLS instances
N-PE U-PE
subinterface
switchport
eompls
pseudo
wire
ES20 Card
or SIP-400
Advantages at U-PE
•Local Switching with Learning
•Concurrent STP and MPLS
•Active-Active Pseudowires
VPLS
INSTANCE
VLAN
INSTANCE
BRAS / PE
LL
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
34
Puzzle #4:N-PE downlink
VLAN
100
VLAN
101
N-PE Scalabitity
•# of VLANs:
4K
•# of MACs:
80K
U-PE Scalability
•# of VLANs:
32K
•# of MACs:
unlimited
N-PE U-PE
subinterface
eompls
pseudo
wire backup
pseudowire
Services Edge:
•popular E-LAN services
(N-PE is just a H-VPLS hub)
ES20 Card
VLAN
INSTANCE
VPLS
INSTANCE
VLAN
100
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
35
CORE
Puzzle #4a:remote H-VPLS hub
VLAN
100
VLAN
101
N-PE Scalabitity
•# of VLANs:
unlimited
•# of MACs:
unlimited
U-PE Scalability
•# of VLANs:
32K
•# of MACs:
unlimited
P/N-PE
U-PE
subinterface
eompls
pseudo
wire backup
pseudowire
VLAN
INSTANCE
VLAN
100
Services Edge:
•sporadic E-LAN services
(N-PE is just a P)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
36
Section
Section
ES card placement
L3 designs
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
37
N-PE U-PE
P / PE
switchport
switchport
LAN Card
ES20 or SIP
Base Design:Carrier Ethernet
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
38
N-PE U-PE
P / PE
switchport
or subinterface
ROUTING
INSTANCE
-ISIS/OSPF
-PIM SSM
switchport
or subinterface
Base Design:L3 Aggregation for IPTV
Numbered SVI
-IP/DHCP term
ination
-Subnets per VLAN
-VRF set
Unnumbered SVI
-IP/DHCP term
ination
-/32 route for each host
-VRF set
U-PE Scalabitity
•# of L3 interfaces:
4K
•# of IP hosts:
128K
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
39
LL
2. VQE Technology
Video Quality of Experience
•Look-aside stream RTP monitoring
•Last-mile error correction
•Fast channel zapping
1. RSVP CAC
Video Call Admission Control
•no need for policy server layer
•scalability, topology independence
•fast re-convergence
RSVP Proxy
VQE-S
IP STB
with VQE-C
1. Play
2. PATH
3. RESV
RTSP
Base Design:IPTV intelligence
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
40
N-PE U-PE
P
EVC svc. or
access subint.
ROUTING
INSTANCE
-MPLS VPN
switchport
or subinterface
Puzzle #1:Customer-facing
ES20
or SIP-400
U-PE Scalabitity
•# of L3 interfaces:
4K
•# of IP hosts:
128K
Advantages at U-PE
•Per-VLAN HQoS
•IP over QinQ (tag push/pop)
•QinQ inner/outer CoS setting
•Scalable E-Line/E-LAN
•SIP400 is better for L3 VPN
Services Edge:
•Business VPNs
•also required for IPTV with QinQ!
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
41
N-PE U-PE
P
EVC svc. or
access subint.
ROUTING
INSTANCE
-MPLS VPN
switchport
or subinterface
Puzzle #2:Distributed BRAS and ISG
SIP-400
U-PE Scalabitity
•# of L3 interfaces:
32K
•# of PPPoE or IP sessions:
32K
(per SIP: 8K VLANs, 8K sessions)
Advantages at U-PE
•AAA
•PPPoE sessions
•IP/DHCP sessions
•Change of Authorization
•L4 redirect
•SCE integration bus
Services Edge:
•integrated residential BRAS
•integrated AAA or SCE
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
42
Agenda
Carrier Ethernet and IP NGN Architectures
•what network architecture is the best for me?
•where should I put my services edge?
Carrier Ethernet Hardware Usage
•ES20 –what does it bring to me?
•Where to put it in my network?
L2 Access Redundancy
•How to connect my access domain to 7600?
•Rings, stars, REP, MST, Flexlink –I’m lost.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
43
CORE
L2 Access
Access –no Redundancy
Switch, DSLAM
PE
L2 Domain
L2/L3
Services
Edge
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
44
CORE
L2 Access
Access Redundancy
Switch, DSLAM
PE
L2/L3
Services
Edge
Boundary Failures
L2 Domain
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
45
Section
Section
L3 Service Redundancy
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
46
CORE
L2 Access
routing
Redundancy Design –L3 services edge
CPE dual-homing/backup
•business VPN, Internet
•simple, well-known by customers
•routing protocol (BGP)
•reliable static route (BFD)
CPE
SW
PE
P
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
47
CORE
L2 Access
Redundancy Design –L3 services edge
Dual-homed Switch or DSLAM
•IPTV STB, PPPoE/DHCP clients
•loop-free L3 term
ination
•no need for Flexlink, REP, MST
•only 1 port per L3 interface!
HSRP
DSLAM
SW
PE
P
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
48
CORE
L2 Access
Redundancy Design –L3 services edge
BRAS
DSLAM
SW
PE
P
Dual-homed Switch or DSLAM
•IPTV STB, PPPoE/DHCP clients
•loop-free L3 term
ination
•no need for Flexlink, REP, MST
•only 1 port per L3 interface!
•can be extended using PW
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
49
CORE
L2 Access
Redundancy Design –L3 services edge
Dual-homed Switch or DSLAM
•IPTV STB, PPPoE/DHCP clients
•loop-free L3 term
ination
•no need for Flexlink, REP, MST
•only 1 port per L3 interface!
•can be extended using PW
HSRP
PE
P
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
50
CORE
B
L2 Access
HSRP
Redundancy Design –L3 services edge
Dual-homed L2 Domain
•still the same situation
•loop-free L3 term
ination
MST, REP
PE
P
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
51
CORE
L2 Access
Redundancy Design –L3 services edge
HSRP
PE
P
Dual-homed L2 Domain
•still the same situation
•loop-free L3 term
ination
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
52
CORE
L2 Access
HSRP
Redundancy Design –L3 services edge
Two-side, dual-homed L2 Domain
•still the same situation
•loop-free L3 term
ination
PE
standby
for RED
standby
for BLUE
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
53
CORE
B
L2 Access
HSRP
Redundancy Design –L3 services edge
Two-side, dual-homed L2 Domain
•still the same situation
•loop-free L3 term
ination
MST, REP
PE
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
54
CORE
B
L2 Access
switchport
HSRP
Redundancy Design –L3 services edge
L2 link is moved between PE’s
•still the same situation
•loop-free L3 term
ination
MST, REP
PE
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
55
CORE
B
L2 Access
TUNNELING!
•MST, REP etc. get confused
•no TC propagation into the VPLS!!!
PW or QinQ
Redundancy Design –L3 services edge
Tunneled L2 Domain
•MPLS PW or Switched QinQ
•loop-free L3 term
ination
MST, REP
PE
HSRP
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
56
CORE
B
L2 Access
!!
Redundancy Design –L3 services edge
Do not remove PE-PE direct link
•it is needed
MST, REP
PE
HSRP
The PE-PE link is removed.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
57
CORE
X
L2 Access
!!
Redundancy Design –L3 services edge
Do not remove PE-PE direct link
•it is needed
•in some cases it carries data
MST, REP
PE
HSRP
The PE-PE link is removed.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
58
CORE
X
L2 Access
!!
Redundancy Design –L3 services edge
Do not remove PE-PE direct link
•it is needed
•in some cases it carries data
•if you can’t have it, plan ahead!
MST, REP
PE
HSRP
The PE-PE link is removed.
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
59
CORE
X
L2 Access
Redundancy Design –L3 services edge
Do not remove PE-PE direct link
•it is needed
•in some cases it carries data
•if you can’t have it, plan ahead!
MST, REP
PE
HSRP
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
60
Section
Section
L2 Service Redundancy
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
61
CORE
L2 Access
Redundancy Design –L2 services edge
Dual-homed CPE
•simple, well-known by customers
•Routed CPE runs routing
•Switched CPE runs STP
CPE
SW
PE
P
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
62
CORE
BL2 Access
Redundancy Design –L2 services edge
Dual-homed Switch
•E-Line/LAN with PE redundancy
for dumb L2 endpoints
•Flexlink (if direct fibers exist)
SW
PE
PDSLAM
H-VPLS hub
Flexlink
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
63
CORE
B
L2 Access
B
Flexlink
Redundancy Design –L2 services edge
Dual-homed L2 Domain
•still the same situation
•Flexlink (if direct fibers exist)
MST, REP
PE
H-VPLS hub
NO PROBLEM ;)
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
64
CORE
B
L2 Access
BTunneled MST, REP!
Possible Solutions:
•EEM workarounds (now)
•EVC with MST (summer)
•EVC with REP (winter)
•QinQ with MST/REP (evaluated)
Future development (patent pending):
•L2GP (access-side blocking)
•V-PE Group (agg-side blocking)
•both need MVRP for TCO propagation
Redundancy Design –L2 services edge
Two-side, dual-homed L2 domain
•new loop occurs!
•L2 domain is still self-resilient
•MST or REP is required
MST, REP
MST
PE
H-VPLS hub
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
65
CORE
B
L2 Access
Tunneled MST, REP, etc., also no TC,
now for the whole L2 domain!
Possible Solutions:
•EEM workarounds (now)
•EVC with MST (summer)
•EVC with REP (winter)
•QinQ with MST/REP (evaluated)
Future development (patent pending):
•L2GP (access-side blocking)
•V-PE Group (agg-side blocking)
•both need MVRP for TCO propagation
Redundancy Design –L2 services edge
L2 link is moved between PE’s
•L2 domain self-resiliency can be
compromised by tunneling!
•EEM scripts may help
•Direct PE-PE link highly desirable!
MST, REP
PE
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
66
Section
Section
Conclusion
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
67
Conclusion
Carrier Ethernet Technology
•Bringing Ethernet at ATM level from operational point of view
•Uses MPLS, uses both L2 and L3 elements
•Cisco 7600 + IOS 12.2SR = the reference platform
2. Do I need ES cards?
•yes, if you know what to do with them
•let’s optimize the design for your network
1. Which architecture?
•plan your service edges
•jump on the architecture evolution train
3. Is L2 access redundancy going to blow off my head?
•no, focus on the most important services
•avoid complex L2 topologies
©2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
Presentation_ID
68