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DRNI Examples and DAS position
Maarten Vissers2011-08-16Version 01
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Contents
Version 00 slides (3 to 8) Figure drawn during Aug. 11 virtual meeting (9 and 10) Version 01 new slides (11 to 27)
PB Gateway nodes examples– Fault free– E-NNI Link failure– I-NNI Link failure– Gateway node failure
PBBN IB-BEB Gateway nodes examples– Fault free– E-NNI Link failure– I-NNI Link failure– Gateway node failure
PBB-TEN IB-BEB Gateway nodes examples– Fault free– E-NNI Link failure– I-NNI Link failure– Gateway node failure
PBBN B-BEB Gateway nodes examples (to be added in v02)
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Version 00 slides
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PBN PBBN
PB
PB
PBB-TEN PBBNPBBN
PBBN
B-B
EB
B-B
EB
B-B
EB
B-B
EB
1 2 3
IB-B
EB
IB-B
EB
IB-B
EB
IB-B
EB
IB-B
EB
IB-B
EBDRNI DRNIDRNI
Three examples
DRNI between a PBN and a PBBN is established between two PB nodes and two IB-BEB nodes
DRNI between a PBBN and a PBB-TEN is established between four IB-BEB nodes
DRNI between two PBBNs is established between four B-BEB nodes
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The following slides present the three examples by means of their node models with Port and Relay functions Clause 6, 8 and 19 shims
The objective is to determine where the Distributed Link Aggregation Sublayer (DAS) belongs in the stack of clause 6/8/19 shims 802.1AX specifies the LAG sublayer as a client of the MAC Sublayer; the LAG sublayer is
bound by one upper MAC SAP and multiple lower MAC SAPs In an 802.1D bridge the LAG sublayer would be located below the MAC Relay, presenting the
set of true ISS SAPs as one (virtual) ISS SAP to the Relay; the LAG sublayer is then bound by one upper (virtual) ISS SAP and multiple lower ISS SAPs Discussion: The upper ISS SAP can not be used to instantiate UP/DOWN MEPs and MIPs, as this
SAP is a virtual SAP located inside the bridge’s ‘switch fabric’ In an 802.1Q bridge the LAG sublayer should in analogy be located below the MAC Relay,
presenting the set of true EISS SAPs as one (virtual) EISS SAP to the Relay; the LAG sublayer is then bound by one upper (virtual) EISS SAP and multiple lower EISS SAPs Discussion: The upper EISS SAP can not be used to instantiate UP/DOWN MEPs and MIPs, as this
SAP is a virtual SAP located inside the bridge’s ‘switch fabric’ Clause 22 of 802.1Q-2011 specifies that the LAG Sublayer is located at the ISS SAP, not at the
EISS SAP; it specifies that per VID UP/DOWN MEPs and MIPs can be instantiated between MAC Relay and LAG Sublayer and that only a Link Down MEP can be instantiated below the LAG sublayer.
DRNI however requires that each service instance passes through an UP MEP just before handing the service frames to the E-NNI link
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PBN
PBBN
PB
PB
IB-B
EB
1. PBN – DRNI – PBBN
PNP
S-VLAN Relay
PNP PNP
PNP PNP PNP PNP
PNP PNP
S-VLAN Relay
PNP
PNP PNP PNP PNP
PIP PIP
S-VLAN Relay
PIP PIP
CNP CNP CNP
B-VLANRelay
CBP CBP CBP CBP
PNP PNP PNP PNP
IB-B
EB
PIP PIP
S-VLAN Relay
PIP PIP
CNP CNP CNP
B-VLANRelay
CBP CBP CBP CBP
PNP PNP PNP PNP
DR
NI
?
?
8.6 S-VLAN MAC Relay
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2,19.3,19.5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 S-VLAN MAC Relay
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
DR
NI
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
The Intra-DAS link can be supported by a link (solid line) in the carrier domain (top) or a dedicated link (dotted line) within the DRNI area (bottom)
OR
DAS
Intra-DAS
DAS
DAS
Intra-DAS
PN
PC
NP
PN
PP
IPC
BP
8.6 B-VLAN MAC Relay
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PBBN
IB-B
EB
S-VLAN Relay
B-VLANRelay
PNP
IB-B
EB
S-VLAN Relay
PIP
B-VLANRelay
CBP
PNPPNP
PBB-TEN
IB-B
EB
2. PBBN – DRNI – PBB-TEN
CNP CNP CNP CNP CNP CNP
PIP PIP
S-VLAN Relay
PIP PIP
CNP CNP CNP
TESI/ESPB-Relay
CBP CBP CBP CBP
PNP PNP PNP PNP
IB-B
EB
PIP PIP
S-VLAN Relay
PIP PIP
CNP CNP CNP
TESI/ESPB-Relay
CBP CBP CBP CBP
PNP PNP PNP PNP
DR
NI
PIP
CBP
PIP
CBP
PIP
CBP
PIP
CBP
PIP
CBP
PIP
CBP
PIP
CBP
PNP PNP PNP PNP PNP
?
?
8.6 S-VLAN MAC Relay
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2,19.3,19.5
6.9.9.5b
8.5
6.14
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 S-VLAN MAC Relay
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
19.2/3/5
6.9.9.5b
8.5
6.14
6.10
6.10
19.2,19.3,19.5
6.9.9.5b
8.5
6.14
6.10
19.2,19.3,19.5
6.9.9.5b
8.5
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
DR
NI
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
8.6 TESI/ESP MAC Relay
8.6 B-VLAN MAC Relay
PIP
CB
PC
NP
CN
PP
IPC
BP
OR
19.2,19.3,19.5
6.9.9.5b
8.5
19.2
DAS
Intra-DAS
DAS
DAS
Intra-DASShould this be a P2P BSI carrying N S-VIDs? Or, should this be a P2P B-VLAN carrying N BSIs, each with a single S-VID?
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PBBN
B-B
EB
B-Relay
PNP
B-B
EB
B-Relay
PNPPNP
PBBN
B-B
EB
3. PBBN – DRNI – PBBN
CBP CBP CBP CBP
CBP CBP
B-Relay
PNP PNP PNP PNP
B-B
EB
CBP CBP
B-Relay
PNP PNP PNP PNP
PNP PNP PNP PNP PNP
CBP
CBP
CBP
CBP
DR
NI
?
?
8.6 B-VLAN MAC Relay
19.2/3/5
8.5
19.2
6.7
802.n
19.2/3/5
8.5
19.2
6.7
802.n
19.2/3/5
8.5
19.2
6.7
802.n
19.2,19.3,19.5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
8.5
19.2
6.7
802.n
19.2/3/5
8.5
19.2
6.7
802.n
19.2/3/5
8.5
19.2
6.7
802.n
8.6 B-VLAN MAC Relay
19.2/3/5
6.9.9.5b
8.5
19.2
19.2/3/5
6.9.9.5b
8.5
19.2
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
6.7
802.n
6.7
802.n
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
19.2,19.3,19.5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2,19.3,19.5
6.9.9.5b
8.5
19.2
6.7
802.n
PN
PC
BP
PN
PC
BP
OR
6.11,9.5c (BSI Relay)
19.2/3/5
6.11,9.5c (BSI Relay)
19.2/3/5
DAS
Intra-DASDR
NI
DAS
DAS
Intra-DASShould this be a P2P B-VLAN?
Multiple CBPs have to be combined to create one Super-CBP function (instead of multiple independent CBP functions) with a single set of B-VLAN MEPs connected to the Super-CBP function at one side and multiple CBP ports at the other side. BSI UP MEPs on each CBP port can be used to terminate the Carrier MA. Super-CBP function includes a BSI Relay function interconnecting B-VLAN virtual ports and CBP ports
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Figure drawn during Aug. 11 virtual meeting
Figure was drawn to clarify interconnection of DAS function with other functions
Text has been added to describe the configuration
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DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 S-VLAN MAC Relay
(EISS A)
(EISS D)(EISS C)(EISS B)
(EISS Y) (EISS Z)(EISS X)
Figure drawn during Aug. 11 virtual meetingText added in v01
The figures in slides 6/7 illustrate the DAS function at the boundary of the clause 8.6 S-VLAN MAC Relay (Forwarding Process) and the clause 19.2/3/5 MEP/MIP functions
The figure at the right expands the figures on slides 6/7 and illustrates that the DAS function is bound by EISSs, one connected to the MAC Relay (EISS A) and three connected to CNPs or PNPs (EISS B, C, D)
In general, MEP/MIP functions could be located at any EISS SAP
In practice MEP/MIP functions in equipment are located at port cards (Option 1), not at switch fabric cards (Option 2)
UP MEP functions should terminate Operator MA level as close to the actual E-NNI link as possible; i.e. Option 1 UP MEPs
E-NNI UP MEP
Option 1
Option 2
Po
rt Card
fu
nctio
na
lity
Sw
itch fab
ric C
ard
fun
ction
ality
E-NNILink 1
E-NNILink 2 Intra-DAS
Link
E-NNI ports and E-NNI and intra-DAS ports should be on different port cards to prevent that a port card failure impacts more than one interface port.
DAS function should be implemented on switch fabric card to allow that a S-VLAN can be connected to any of the E-NNI links or intra-DAS link.
Frames of a S-VLAN arriving over the intra-DAS link will be forwarded to the actual E-NNI link via the switch fabric card.
EISS A is a virtual EISS, not accessible for MEP/MIP functions; it is located “in the middle of a switch fabric device”. Switch fabric device has “EISS X, Y, Z, A, B and C” as I/O ports.
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Version 01 new slides
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Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink a
I-NNILink b
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink e
I-NNILink d
(EISS Y) (EISS Z)(EISS X) (EISS Y)(EISS Z) (EISS X)
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
DAS, c8.6 Forwarding and G.8031 SNCP Processes
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
Intra-DAS Link
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
(EISS N) (EISS N)
Sw
itch fab
ric Card
fu
nctio
nality
A (to be developed) distributed version of the G.8031 ETH SNC Protection processes is added, facing the carrier domain. Such distributed version of G.8031 SNC Protection processes should be implemented on the switch fabric card to allow that a S-VLAN can be connected to any of the I-NNI links. Each SNC Protection process presents the protected S-VLAN signal via the (virtual) EISS N to the c8.6 Forwarding Process. Working and Protection S-VLAN connections are connected via an I-NNI Link and the Intra-DSNCP Link.
EISS A and EISS N are virtual EISSs, not accessible for MEP/MIP functions; they are located “in the middle of a switch fabric device”. Switch fabric device has “EISS X, Y, Z, A, B and C” as I/O ports.
Intra-DSNCP Link
I-NNI SNCP Down MEPs
E-NNI
PN
PP
NP
PN
PP
NP
802.n physical interface may be replaced by e.g. OTN interface (S-VLAN over ODUk) or MPLS-TP interface (S-VLAN over transport-LSP)
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Example 1A – fault free condition
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink a
I-NNILink b
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink e
I-NNILink d
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 1
E-NNILink 2
Intra-DAS Link
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 4
E-NNILink 3
(EISS N) (EISS NW)
Intra-DSNCP Link
E-NNI
PN
PP
NP
PN
PP
NP
S-VLAN k
S-VLAN k S-VLAN k
Working Gateway for
S-VLAN k
Typically the Active
Gateway
Protection Gateway for S-
VLAN k
Typically the Standby Gateway
DSNCP process will pass through S-VLAN traffic in
this mode
Will become the Active Gateway if Working Gateway
has failed
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Example 1B – E-NNI Link 1 failure DRNI protection
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink a
I-NNILink b
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink e
I-NNILink d
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 1
E-NNILink 2
Intra-DAS Link
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 4
E-NNILink 3
(EISS N) (EISS N)
Intra-DSNCP Link
E-NNI
PN
PP
NP
PN
PP
NP
X
Move UP MEP to E-NNI Link 3 port
S-VLAN k
S-VLAN k
S-VLAN k
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
S-VLAN k connection
over Intra-DAS link is now
included in the operator MA
Fault in DRNI does not impact
protection in carrier
network
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Example 1C – I-NNI Link a failure SNC protection
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink a
I-NNILink b
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink e
I-NNILink d
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 1
E-NNILink 2
Intra-DAS Link
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 4
E-NNILink 3
(EISS N) (EISS N)
Intra-DSNCP Link
E-NNI
PN
PP
NP
PN
PP
NP
X
S-VLAN k
S-VLAN k S-VLAN k
Fault in carrier network does
not impact DRNI
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16
Example 1D – Gateway node failure SNC & DRNI protection
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink a
I-NNILink b
Distributed version of G.8031 SNC Protection Processes
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
I-NNILink e
I-NNILink d
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 1
E-NNILink 2
Intra-DAS Link
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
8.6 Forwarding Process
(EISS A)
E-NNILink 4
E-NNILink 3
(EISS N) (EISS N)
Intra-DSNCP Link
E-NNI
PN
PP
NP
PN
PP
NP
X
S-VLAN k
S-VLAN k S-VLAN k
S-VLAN k
Working Gateway
fault
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
Protection Gateway has to become Active Gateway for S-
VLAN k
As Active Gateway the S-
VLAN SNCP Down MEP
functions are activated
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17
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
DRNI in PBBN IB-BEBs
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
A PBBN in a carrier domain may support DRNI as illustrated below. The two Gateway nodes are connected to a service carrying B-VLAN S and an additional Intra-DAS B-VLAN. The S-VLANs in the carrier domain are carried in B-VLAN S with an I-Tag. The I-SID of a S-VLAN may be registered at a CBP in the left Gateway, or at a CBP in the right Gateway. The S-VLANs in the Intra-DAS B-VLAN are carried with an I-Tag.
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS B-VLAN
B-VLAN S
Port is blocked
B-VLAN Up MEPs
![Page 18: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/18.jpg)
18
Example 2A – fault free condition …
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS B-VLAN
B-VLAN S
S-VLAN k
ISID K is registered in
this CBP
ISID K
![Page 19: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/19.jpg)
19
Example 2B – E-NNI Link 1 failure DRNI protection…
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS B-VLAN
B-VLAN S
S-VLAN k X
ISID K BSI K’
ISID K is registered in
this CBP
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
![Page 20: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/20.jpg)
20
Example 2C – I-NNI Link a failure BVLAN S reroute….
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS B-VLAN
B-VLAN SX
To recover the B-VLAN S, unblock this I-NNI port after failure of
other I-NNI port
S-VLAN k
ISID K ISID K is
registered in this CBP
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21
Example 2D – Gateway node failure BVLAN reroute & DRNI protection….
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 B-VLAN MAC Relay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS B-VLAN
B-VLAN S
Protection Gateway has
to become Active
Gateway for S-VLAN k
Move registration of ISID K to this
port
S-VLAN k
X
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
ISID K
Working Gateway
fault
![Page 22: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/22.jpg)
22
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
DRNI in PBB-TEN IB-BEBs
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
A PBB-TEN in a carrier domain may support DRNI as illustrated below. The two Gateway nodes are connected to multiple service carrying TESIs and an additional Intra-DAS TESI. The S-VLANs in the carrier domain are carried in a Working or Protection TESI. The S-VLANs in the TESIs are carried with an I-Tag. A Distributed version of TESI protection is to be developed.
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 TESI Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 TESIRelay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS TESI
Protection TESII-NNILink a
I-NNILink b
I-NNILink e
I-NNILink d
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
Active Working and Protection TESI MEPs
Standby Working and Protection TESI MEPs
Working TESI
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23
Example 3A – fault free condition …
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 TESI Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 TESIRelay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS TESI
Protection TESII-NNILink a
I-NNILink b
I-NNILink e
I-NNILink d
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
Working TESI
S-VLAN k
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24
Example 3B – E-NNI Link 1 failure DRNI protection …
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 TESI Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 TESIRelay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS TESI
Protection TESII-NNILink a
I-NNILink b
I-NNILink e
I-NNILink d
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
Working TESI
S-VLAN k X
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
![Page 25: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/25.jpg)
25
Example 3C – I-NNI Link a failure TESI protection…
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 TESI Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 TESIRelay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS TESI
Protection TESII-NNILink a
I-NNILink b
I-NNILink e
I-NNILink d
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
Working TESI
S-VLAN k
X
![Page 26: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/26.jpg)
26
Example 3D – Gateway node failure TESI & DRNI protection …
PN
P
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)(EISS C)(EISS B)
E-NNI UP MEPs
E-NNILink 1
E-NNILink 2
DAS
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
19.2
6.7
802.n
19.2/3/5
6.9.9.5b
8.5
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D) (EISS C) (EISS B)
E-NNILink 4
E-NNILink 3
E-NNI
CN
P
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
(EISS Y) (EISS Z)(EISS X)
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5CB
P
8.6 TESI Relay
6.14
6.11, 9.5c
19.2/3/5
PIP
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
PIP
6.14
6.10
6.14
6.10
6.14
6.10
6.146.146.14
6.11, 9.5c6.11,9.5c6.11,9.5c
19.2/3/519.2/3/519.2/3/5
CB
P
8.6 TESIRelay
6.14
6.11, 9.5c
19.2/3/5
(EISS Y)(EISS Z) (EISS X)
CN
PP
NP
Intra-DAS TESI
Protection TESII-NNILink a
I-NNILink b
I-NNILink e
I-NNILink d
19.2/3/5
6.9.9.5b
8.5
19.2
…
19.2/3/5
6.9.9.5b
8.5
19.2
…
Working TESI
S-VLAN k
XWorking Gateway
fault
Operator MA Up MEP has
been moved to E-NNI Link 3
PNP
Protection Gateway has to become Active Gateway for S-
VLAN k
As Active Gateway the TESI Up MEP functions are
activated
![Page 27: 1 DRNI Examples and DAS position Maarten Vissers 2011-08-16 Version 01](https://reader036.vdocument.in/reader036/viewer/2022062511/551a8d5c5503466b3a8b4d71/html5/thumbnails/27.jpg)
27
DRNI in PBBN B-BEBsTo be added in v02.