1. SES E-VPL Member Deployment for NJEDge.Net
Verizon Business Ethernet Solutions
Presented By Joseph O’Leary Sales Engineer
Higher Education segment for Verizon Business

2. Ethernet Services - Summary

3. Verizon Switched Ethernet Service Types
Verizon Ethernet LAN (E-LAN) Service
MP2MP EVC, designed for bridge or router CEs
Connectionless, any-to-any connectivity
Transparent (VLAN tag preservation, L2CP tunneling)
‘All-to-One Bundled’ UNIs
Service performance objectives E -
UNI CE
(Switch/Router)
Verizon Ethernet Virtual Private Line (EVPL) Service
P2P EVC, designed for router CEs
Non-transparent service
‘Service Multiplexed’ UNI – one or more EVCs per UNI
Service performance guarantees CE
(Router)
Possible 10GigE ICB in 2004
E-LAN is the current SES service type. With E-LAN, the Tunneled UNI provides "All-to-one bundling, i.e., all customer VLANs get tunneled through Verizon multipoint EVC (VLAN).
Applications/Customers:
LAN Interconnection: Government, Financial, Education, Medical

4. EVPL Metro Switched Ethernet Service
HQ LAN
CPE
NID
Verizon Metro Network
Customer’s
Virtual Network
Ethernet Switch
Customer Site A
Dedicated Fiber Pair
Redundant Management Links
Data Services Network Operations( DSNOC)
Customer Site C
Customer Site B
10 M
100 M
GigE (1000 M)
LAN
Service Connection Point
Customer Equipment (*MNS Opportunity)
Key Characteristics
QoS options available
Shared Ethernet switches
Backbone: Multiple GigE links
Dedicated fiber access
Network Interface Device (NID)
Customer virtual networks (VLAN)
IOF

5. EVPL Metro Switched Ethernet Service
Customer network
Customer has three EVPL Premier UNIs and two EVCs, as shown below
EVC-1: single CoS <EVPL-B> = <70 Mbps>
EVC-2: multi-CoS <EVPL-RT, EVPL-PD> = <20Mbps, 50Mbps>
Switch port configured as ‘Premier Access Line, tagged’
Switch port configured as ‘Premier Access Line, untagged’
E-UNI
100M
SES Network
E-UNI 1G CE
6509
6509
NID
VLAN-ID=123
EVC-1 A1 A3
VLAN-ID=456
EVC-2
6509
All customer traffic is ‘tagged’
All customer traffic is ‘untagged’
E-UNI
100M A2
Note: For EVC-2, switch looks at {VLAN_ID + CoS (p-bit)} of each incoming service frame - frames must be ‘tagged’

6. Marking & CoS with SES-EVPL

7. IP Precedence and DiffServ Code Points
Version
Length
ToS
Byte
Len ID
Offset
TTL
Proto
FCS
IP SA
IP DA
Data
IPv4 Packet 7 6 5 4 3 2 1
Standard IPv4
IP Precedence
Unused
DiffServ Code Point (DSCP)
IP ECN
DiffServ Extensions
IPv4: Three most significant bits of ToS byte are called IP Precedence (IPP) - other bits unused
DiffServ: Six most significant bits of ToS byte are called DiffServ Code Point (DSCP) - remaining two bits used for flow control
DSCP is backward-compatible with IP Precedence
DiffServ Class Selector (DSCS) also uses 3 most significant bits
• IP Type of Service Byte—As Layer 2 media often changes as packets traverse from source to destination, a more ubiquitous classification would occur at Layer 3. The second byte in an IPv4 packet is the Type of Service (ToS) byte. The first three bits of the ToS byte alone are referred to as the IP Precedence (IPP) bits. These same three bits, in conjunction with the next three bits, are known collectively as the DSCP bits.
The IP Precedence bits, like 802.1p CoS bits, allow for only 8 values of marking (0-7).
IPP values 6 and 7 are generally reserved for network control traffic (such as routing).
IPP value 5 is recommended for voice.
IPP value 4 is shared by video conferencing and streaming video.
IPP value 3 is for call-signaling.
IPP values 1 and 2 can be used for data applications.
IPP value 0 is the default marking value.
Many enterprises find IPP marking to be overly restrictive and limiting, favoring instead the 6-Bit/64-value DSCP marking model (as defined further on the next slide)
The last two bits of the IP ToS byte have been defined for use as IP Explicit Congestion Notification bits (in RFC 3168); in this manner TCP receivers can signal senders to slow down their transmission rates if the network is congested (without such signaling, traffic would have to be dropped before TCP senders would adjust their transmission rates)
Source: Cisco training material

8. EVPL Services Domain Service Multiplexed UNI EVPL EVCs
All UNIs in a given domain must be ‘Service Multiplexed’
Service Multiplexed UNI
Offered only for 100M and 1000M UNIs (not 10M)
Two types: ‘Untagged’ OR ‘Tagged’ (can’t be both on same UNI)
CAC rules apply to UNI...more on this later...
EVPL EVCs
Customer gets ability to order an EVC with up to three CoS
Separate speeds for each CoS
For EVC order requiring 1 CoS  ‘VLAN ID’ is used to identify the CoS
For EVC order with 2 or 3 CoS  2 options
‘EVC+CoS’ (VLAN ID + p-bit value)
‘EVC+DSCP’ could be used to identify the CoS on the EVC (only for EVCs connecting two untagged UNIs)
L2CPs: All L2CPs are discarded at the UNI

9. Local Enterprise, EVPL-EVC, Multiple CoS
Customer network
Customer has three EVPL Premier UNIs and two EVCs, as shown below
EVC-1: single CoS <EVPL-B> = <70 Mbps>
EVC-2: multi-CoS <EVPL-RT, EVPL-PD> = <20Mbps, 50Mbps>
Service Multiplexed, tagged
Service Multiplexed, untagged
E-UNI
100M
SES Network
E-UNI 1G CE
6509
6509
NID
VLAN-ID=123
EVC-1 A1 A3
VLAN-ID=456
EVC-2
6509
All customer traffic is ‘tagged’
All customer traffic is ‘untagged’
E-UNI
100M A2
Note: For EVC-2, switch looks at {VLAN_ID + CoS (p-bit)} of each incoming service frame - frames must be ‘tagged’

10. EVPL Considerations
EVPL is designed for customers using routers to access the service...Bridge CEs may not work correctly...
All traffic is policed on these UNIs  CE can’t burst to line rate
CE must police/shape traffic to coordinate with the Bandwidth Profile of the service
Traffic exceeding the BWP is dropped by the policer
More on this later...
Connection Admission Control (CAC) rules limit the number of EVCs and the aggregate bandwidth per CoS on a given UNI

11. SES EVPL CoS ID, Tagged UNI
Service multiplexed UNI, Premier Access Line, Tagged
Two CoS ID options per EVC
EVC: a given EVC (VLAN ID) –single CoS
EVC + CoS: a given CoS (p-bit value) on a given EVC – multiple CoS
Note: CoS ID options per EVC are independent, i.e., both can coexist on same UNI – see right
EVC1
EVPL-RT or EVPL-PD or EVPL-B
CE-VLAN CoS 5,6
CE-VLAN CoS 2
UNI
EVC2
EVPL-RT
CE-VLAN CoS 0
EVPL-PD
EVPL-B

12. CoS Speeds Summary Allowable CoS Speeds per EVC, by Service Type
Class of Service (CoS)
EVPL Services
Premier Access Line
FE (100M)
GE (1000M)
Real-time (RT)
1-50 Mbps
1-100 Mbps
Priority Data (PD)
1-500 Mbps
Basic (B)
Mbps
EVPL CoS Speeds
Low speed: 1 to 9 Mbps, in 1M steps
Medium speed: 10 to 90 Mbps, in 10M steps
High speed: Mbps, in 100M steps

13. UNI Connection Admission Control (CAC) Rules
UNI CAC rules are built into Provisioning System
Service Multiplexed UNI - see table below
CAC Rules for Service Multiplexed UNI
UNI speed
Max # EVCs
RT (50%)
PD (85%)
RT+PD (85%)
Basic (500%)
100M 10
50 Mbps
85 Mbps
500 Mbps 1G 75
850 Mbps
5000 Mbps

14. EVPL CoS ID Values Customer CoS (p-bit) Value
EVPL-EVC Multi-Service Scenarios
Customer CoS (p-bit) Value
EVPL-RT
EVPL-PD
EVPL-B
{RT + PD + B}
5,6 2
0,1,3,4,7
{RT + PD}
0,1,2,3,4,7
N/A
{RT + B}
{PD + B}
0,1,3,4,5,6,7

15. TYPICAL(SEGP): TODAY PVC #1 /IP/VPN/ “EXTRANET” PVC #2 X
Internet 1 (I1) X
Member-to-Member Data
Member-to-Member Video
Internet 2 (I2)

16. TYPICAL(SEGP): TOMORROW
EVC #1/
Best Effort
CoS
Priority Data CoS
Internet 1 (I1) X
Member-to-Member Data
Member-to-Member Prioritized Video
Internet 2 (I2)
Member-to-Member Non-Prioritized Video

17. SAMPLE EVC Sizing EXAMPLE 1: Today: IP/VPN = 4 Mbps; Internet = 6 Mbps
Tomorrow: EVC/BE= 10 Mbps; EVC/PD = 2 Mbps
Internet Contract: 6 Mbps
EXAMPLE 2:
Today: IP/VPN = 10 Mbps; Internet = 10 Mbps
Tomorrow: EVC/BE = 20 Mbps; EVC/PD = 6 Mbps
Internet Contract: 12 Mbps