ETHERNET CONNECT 2.0 Additional product information
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ETHERNET CONNECT 2.0 Additional product information
TABLE OF CONTENTS 1. GENERAL INFORMATION
Product EthernetConnect 2.0 can be used flexibly in customer networks due to the separation
of Access (As) and Connection (Ethernet Virtual Connection, EVC). This leads to synergies
related to the reduction of
Additional product information ▪ terminating equipment
▪ space requirement for racks
▪ energy requirement (power/air conditioning).
As soon as customer locations have been equipped with EthernetConnect 2.0 Access, the
customer can order EVCs linking all locations at short notice. To increase
the performance of applications, the customer can choose from up to 10 Class of Service
1 General information 3 profiles (CoS profiles) for each EVC.
2 Access 3
3 Connections 4
2. Access
3.1 EthernetConnect 2.0 EVCs can be provided in two types 4
3.1.1 Ethernet Private Line (EPL) 4
At customer locations, access are delivered with a remote devices (RD) and offered with rates
3.1.2 Ethernet Virtual Private Line (EVPL) 4
of 2 Mbit/s to 10 Gbit/s (effective 9.84 Gbit/s).
4 Class of Service 5
4.1 Ethernet Private Line (EPL) 5 An RD has several user network interfaces (UNI) on which connections can end.
4.2 Ethernet Virtual Private Line (EVPL) 5
5 “Overbooking” 6 The customer's UNI (LAN-Ports) can be configured individually (port-based/ VLAN-based)
depending on the application. The customer can choose the following LAN interfaces:
6 Technical quality parameters 7
7 Maximum data throughput 8 Interface Plug/socket
For more information, see General Terms & Conditions, Specification of Services
8 Unexpected frame losses 9 10/100 Base-T RJ45 (full duplex)
9 Flow control 9 1000 Base-T RJ45 (auto negotiation)
10 Link loss forwarding – E-LMI 10 1000 Base-SX Multi-mode LWL LC (full duplex)
1000 Base-LX Single-mode LWL LC (full duplex)
11 Ethernet control protocols 11
10G Base-SR Multi-mode LWL LC (full duplex)
12 Operations administration maintenance (OAM) 12
10G Base-LR Single-mode LWL LC (full duplex)
13 Hotlines 12
13.1 Provision hotline for our customers 12 Several connections can connect on a RD depending on the type and bandwidth (Access XS/S
13.2 Hotline for technical queries and faults 12 max. 10 EVC; Access L/XL max. 80 EVC).
1 External EthernetConnect 2.0 Sept. 2021 23. CONNECTIONS 4. CLASS OF SERVICE
Ethernet Virtual Connections (EVC) are provided between two access – 1 MBit/s to 1000 MBit/s
4.1 Ethernet Private Line (EPL)
(effective 980 MBit/s) can be booked – and facilitate data transfer between customer locations.
The following four Classes of Service (CoS) are available:
Design rule
▪ No EVC may be larger than the access bandwidth. CoS profile P-Bit Percentage profile bandwidth per CoS of the EVC
▪ The sum of guaranteed traffic may not exceed the access bandwidth. Premium (e.g., voice) 5 100% for small packets with less delay
Priority (e.g., video) 4 100% for delay critical traffic
Critical (e.g., financ. transaction) 3 100% lower packet losses, longer delay where applicable
3.1 EthernetConnect 2.0 EVCs can be provided in two types Standard (e.g., email) 0 100% applications that do not pose any specific requirements
3.1.1 Ethernet Private Line (EPL) Notes:
▪ Ethernet frames with the CoS profiles Premium, Priority and Critical are “prioritised traffic”.
An EPL-EVC is a transparent connection between two UNIs. Only one EVC can end on an UNI. The These are always transmitted.
LAN ports (UNIs), on which an EPL-EVC ends, must be configured as “port-based”. Max. 4 EPL- ▪ The Ethernet frames with the CoS profile Standard are transmitted only if there are
ECVs are possible on an access of up to 1000M. sufficient network resources. Otherwise, the Ethernet packets are arbitrarily discarded.
▪ The customer must ensure that the maximum bandwidth per connection is not exceeded.
3.1.2 Ethernet Virtual Private Line (EVPL) ▪ Exceeding the booked bandwidth (burst traffic) – even for a brief period – leads to
packet loss.
With EVPL-EVCs, several connections can end on one UNI. For this reason, the EVCs have to
contain a unique identifier, the Virtual Local Area Network Ident (VLAN ID).
4.2 Ethernet Virtual Private Line (EVPL)
Design rule VLAN-ID
▪ Usable VLAN IDs 1 – 4094. In addition to the four classes of service, another six mixed profiles are available for EVPL:
▪ Up to 2000 VLAN IDs can be assigned per access.
CoS profile P-Bit Percentage profile bandwidth per CoS of the EVC
▪ VLAN IDs may not be assigned twice on one UNI. Premium (e.g., voice) 5 100% for small packets with less delay
▪ The customer has up to 10 VLAN ranges per EVC. Priority (e.g., video) 4 100% for delay critical traffic
▪ The LAN-Ports (UNI), on which EVPL-EVCs end, must be configured as “VLAN-based”. Critical (e.g., financ. transaction) 3 100% lower packet losses, longer delay where applicable
Standard (e.g., email) 0 100% applications that do not pose any specific requirements
Mixed profile 1 5/4/3/0 30% 30% 30% 100%*
VLAN VLAN ID Mixed profile 2 '4/3/0 40% 40% 100%*
Extra
Mixed profile 3 5/0 50% 100%*
e.g. 10 e.g. 2010 – 2019 only with
Mixed profile 4 4/0 50% 100%*
EVPL
Mixed profile 5 3/0 50% 100%*
Mixed profile 6 5/4/3/0 10% 20% 20% 100%*
*) % - value: Indicates the throughput of the Standard CoS profile. The maximum value can reach 100%.
Quality traffic has priority over standard traffic.
3 External EthernetConnect 2.0 Sept. 2021 4
46. TECHNICAL QUALITY PARAMETERS
Mixed profiles consist of up to four classes of service. In the case of mixed profiles, the entire The main technical quality parameters for an EVC are:
bandwidth can be used for standard traffic. Prioritised traffic is transferred preferentially up to
their guaranteed amount. Delay:
The delay of frames (Ethernet packets) essentially depends on the access design (fibre glass,
Note:
copper), the line length and the number of hubs. Delay can be specified as One Way Delay or
In any case, the customer must take suitable measures – such as shaping – to ensure that
Round Trip Delay. With EthernetConnect 2.0, the delay is specified as One Way Delay.
the traffic on the customer side does not exceed the maximum bandwidth for each prioritised
CoS profile (Premium, Priority, Critical).
Delay variations
These variations are fluctuations arising when transmitting data packets.
For real-time applications, e.g., Voice over IP (VoIP), delay fluctuations could lead to problems.
5. “OVERBOOKING” For this reason, Telekom recommends the “Premium” CoS profile for these applications.
EthernetConnect 2.0 Access cannot be overbooked with prioritised traffic (Premium, Priority,
Frame loss ratio
Critical). Standard traffic can use the unused bandwidth of other traffic classes.
Frame loss ratio is the number of lost or incorrectly received frames divided by the number of
frames sent.
Examples:
• Access XS (8M) can be booked with
Table: quality classes, connections and quality parameters of connection classes
− 8 x 2 MBit/s EVCs with the mixed profile 3 (50% Premium and 50% Standard) or
− 3 x 2 MBit/s “Premium” and 7 x 2 MBit/s “Standard”.
• Access L - up to 200 EVCs with 100 MBit/s - can be configured using the CoS profile One Way Delay values
“Standard”. Typical and maximum values
QoS class Typical delay* Max. delay Delay variation Frame loss ratio
As described in the previous section, a transfer of packets is not guaranteed for the CoS profile
Premium/Voice 10 ms 21 ms ≤ 3 ms ≤ 0.1%
“Standard”. “Overbooking” of an access is therefore possible only with standard traffic (best
effort) with EVPL-EVCs. Priority/Low Delay 10 ms 26 ms ≤ 5 ms ≤ 0.1%
Critical/Low Loss 12 ms 41 ms - ≤ 0.01%
Standard/Best Effort - - - -
Surcharge for port types
+10 ms +14 ms - 0.1%
S and XS per end
* a typical delay is an expected average value for connections between metro locations, and is not a commitment for
an individual connection. Metro regions: Berlin, Dortmund, Düsseldorf, Frankfurt, Hanover, Hamburg, Cologne,
Leipzig, Munich, Nuremberg, Stuttgart
The actual values depend on the length of the connection and the geographical distance to
Telekom hubs at the respective customer locations.
5 External EthernetConnect 2.0 Sept. 2021 67. MAXIMUM DATA THROUGHPUT 8. UNEXPECTED FRAME LOSSES
The maximum data throughput at a access or connection is defined physically on the one hand Packet losses can occur if the customer transmits more than the agreed EVC/CoS bandwidth
and contractually on the other. at the transfer interface. To avoid frame losses, the customer must, through appropriate
traffic management (e.g. shaping), ensure that the frame rate at the UNI does not exceed
When Ethernet frames are transmitted, a distance (IFG – inter frame gap) is always maintained the agreed Ethernet throughput per connection and CoS profile.
between the frames and a start sequence is sent for synchronisation at the beginning of a new
frame. This Ethernet overhead corresponds to 20 bytes per Ethernet frame to be transmitted. With mixed profiles, shaping per CoS profile must be based on the percentage share of the
Thus, for example, the technically maximum possible usable bandwidth with a full 1 GBit Ethernet bandwidth. At the RD input, the bandwidth is limited using a policer. Bursting is not possible.
is 761.9 MBit/s (76% with 64 byte frames) and 986.9 MBit/s (98.6% with 1518 byte frames). Transports that are characterised by P-Bits from Classes of Service that have not been ordered
Telekom requires a part of the maximum transferable access bandwidth for network management. are transmitted in the Standard-Class and are not prioritised there.
This reduces the usable bandwidth, for example, for port L (1G), to 980 Mbit/s. With 64 byte
frames, 730 Mbit/s (73%) can be transmitted. The transmission of frames of the CoS profile "Standard" is not guaranteed and transmitted
only if there are free resources available in the network. Depending on the protocol/application,
EthernetConnect 2.0 Maximum usable Max. throughput in % Max. throughput in %
more than 10% of the data traffic can consist of acknowledgement packets.
Access type Ethernet bandwidth* for a frame size for a frame size In the event of unexpected frame losses, a check must first be made as to whether the customer
in MBit/s of 64 bytes on a UNI of 1 518 bytes on a UNI
is sending burst traffic that is above the threshold limits.
XS (2M) 2 85% 100%
XS (4 M) 4 85% 100% If proper traffic management (e.g., shaping) is not possible, frame losses can be reduced by
XS (8 M) 8 85% 100% selecting the LAN interfaces. Here, the LAN interfaces should be adapted as closely as possible
S (20M) 20 85% 100% to the EVC bandwidth. In the case of a star network with EVPL service, traffic management
L (1G) 980 74%** 100%
must always be carried out at the headquarters.
XL (10G) 9840 74%*** 100%
Examples:
* max. sum of all prioritised EVC bandwidths
** technically, max. 76% is possible at a 1G Ethernet interface EVC bandwidth LAN interface
*** technically, max. 76% is possible at a 10G Ethernet interface
8 MBit/s 10 Base-T (full duplex)
100 MBit/s 100 Base-T (full duplex)
980 MBit/s 1000 Base-T (autoneg), 1000 Base SX, 1000 Base LX
9. FLOW CONTROL
Not available for EthernetConnect 2.0.
7 External EthernetConnect 2.0 Sept. 2021 810. LINK LOSS FORWARDING – E-LMI 11. ETHERNET CONTROL PROTOCOLS
Link loss forwarding is not available for EthernetConnect 2.0. If link “loss forwarding” is activated EthernetConnect 2.0 – not specific to EPL/EVPL
and several EVCs use one interface, one single EVC failure would turnoff the whole interface. In Link-related protocol behaviour between the physical interfaces
consequence all UNIs on the other side of the EVCs would also go out of operation. This leads to a
Protocol Ethertype subtype Destination address Link
chain reaction.
802.3 Operations, Administration, Ethertype: 0x8809 01-80-C2-00-00-02 Discarded
and Maintenance (OAM link) Subtypes: 0x03
The status of an EVC can be queried from the UNI via E-LMI (Ethernet Local Management
Ethernet Local Management Ethertype: 0x88EE 01-80-C2-00-00-07 Peered
Interface). Interface (E-LMI)
MEF 16 based on ITU-T G.933 and
X.36
EthernetConnect 2.0 – Ethernet Local Management Interface (E-LMI)
Ethernet Synchronization Ethertype: 0x8809 01-80-C2-00-00-02 Discarded 1
Messaging Channel (ESMC) Subtypes: 0x0A
Protocol Ethertype subtype Destination address Physical Ethernet link
Ethernet Local Management Ethertype: 0x8808 01-80-C2-00-00-07 Peered
Interface (E-LMI)
MEF 16 based on ITU-T G.933
1) Every remote device type has an active clock output T4. Phase synchronisation (IEEE1588v2) is not configured with
and X.36 EVPL release 1. The SyncE feature is deactivated (discarded) on the UNI in "Standard”.
However, it can be activated (peered).
Discarded = packets are not transmitted, they are discarded
Ethernet Local Management Interface is always enabled. Passed = packets are transmitted
Peered = is “protocol partner”, packets are processed
If an access connected via an EVC is no longer accessible at an EthernetConnect Access (EVC or
access failure), a local ETH-CC alarm is triggered and the customer receives information
concerning the user network interface (UNI) via E-LMI. The E-LMI uses the EVC ID to uniquely
identify the connection. The ID is communicated to the customer in the order confirmation and
final information.
The following information
is shared with the customer via E-LMI:
▪ Ethernet service is added
▪ Ethernet service is suspended/deleted
▪ Configured Ethernet-Service
▪ is active → there is no alarm
▪ not active → there is an alarm
9 External EthernetConnect 2.0
EthernetConnect 2.0 November
Sept. 2021 2020 10EthernetConnect 2.0 – specific to EPL/EVPL 12. OPERATIONS ADMINISTRATION MAINTENANCE (OAM)
Service-related protocol behaviour
Protocol Ethernet subtype Destination EPL service EVPL
The customer can use OAM levels 6 and 7. OAM levels 4 and 5 can be used by the customer
address service in exceptional cases. However, Telekom reserves the right to discontinue OAM levels 4 and 5
802.1Q Passed Registered if this is required for regulatory reasons.
8100 tags
Link Aggregation Ethertype: 0x8809 01-80-C2-00-00-00 Passed Discarded
Control/Marker Protocol (LACP) 01-80-C2-00-00-03 13. HOTLINES
Subtypes: 0x01, 0x02 01-80-C2-00-00-02 Passed Discarded
13.1 Installation-Hotline for our customers
Precision Time Protocol Ethertype: 0x88F7 01-80-C2-00-00-0E Passed Discarded
Peer-Delay (PTP)
In case of any questions about the activation of the telecommunications infrastructure,
Link Layer Discovery Protocol Ethertype: 0x88CC 01-80-C2-00-00-00 Passed Discarded
(LLDP) 01-80-C2-00-00-03 we are available to our customers for 30 days after provision. Our free installation-hotline
01-80-C2-00-00-0E +49 800 33 07861 is available from Monday to Friday between 8 am and 5 pm.
Virtual Station Interface Ethertype: 0x8940 01-80-C2-00-00-00 Passed Discarded
Discovery and Configuration Subtype: 0x0001
Protocol (VDP)
Important:
For quick implementation/support/processing, customers should have the following
Port-Based Network Ethertype: 0x888E 01-80-C2-00-00-00 Passed Discarded
Access Control 01-80-C2-00-00-03 information ready: transaction number, port or connection ID, customer number.
01-80-C2-00-00-0E
MACsec (802.1ae) Ethertype: 0x88E5 Passed Discarded 13.2 EC Service-Hotline
802.3 MAC Control: PAUSE Ethertype: 0x8808 01-80-C2-00-00-01 Discarded Discarded If there are any problems with EthernetConnect 2.0, our AGB customers can always reach us
Subtype: 0x0001
on +49 800 5231323.
802.3 MAC Control: Priority Flow Ethertype: 0x8808 01-80-C2-00-00-01 Discarded Discarded
Control (PFC) Subtype: 0x0101
Our TDS customers can reach us on the personal call number (part of the TDS contract).
802.3 MAC Control: Ethertype: 0x8808 01-80-C2-00-00-01 Discarded Discarded
Multipoint MAC Control Subtype: 0x0002
0x0006 Important:
802.3 MAC Control: Ethertype: 0x8808 01-80-C2-00-00-01 Discarded Discarded For quick implementation/support/processing, customers should have the following
Organization Specific Extensions Subtype: 0xFFFE
information ready: transaction number, port or connection ID, customer number.
Rapid/Multiple Spanning Tree LLC address: 0x42 01-80-C2-00-00-00 Passed Discarded
Protocol (RSTP/MSTP) 01-80-C2-00-00-08
Shortest Path Bridging (SPB) LLC address: 0xFE 01-80-C2-00-00-2E Passed Discarded
01-80-C2-00-00-2F
Multiple MAC Registration Ethertype: 0x88F6 01-80-C2-00-00-20 Passed Discarded
Protocol (MMRP)
Multiple VLAN Registration Ethertype: 0x88F5 01-80-C2-00-00-21 Passed Discarded
Protocol (MVRP) 01-80-C2-00-00-0D
Multiple Stream Registration Ethertype: 0x22EA 01-80-C2-00-00-0E Passed Discarded
Protocol (MSRP)
Multiple ISID Registration Ethertype: 0x8929 01-80-C2-00-00-00 Passed Discarded
Protocol (MIRP)
11 External EthernetConnect 2.0 Sept. 2021 12Publisher: Telekom Deutschland GmbH, Landgrabenweg 151, 53227 Bonn | As of 04/2021 | Subject to alterations and errors | X
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