Network Demarcation in 802.1aj

1
Network Demarcation in 802.1aj
Alan McGuire IEEE 802.1 Eilat Interim May 2008
2
Introduction

• Annex K of 802.1aj contains some use cases and
  invites suggestions for more!
• Following slides suggest some other scenarios
• Provider to provider cases rather than enterprise
  to provider
• Also current models do not consider End 2 End
• Discuss
• Are they allowed in the 802.1aj model?
• Can they be managed?
• Should any be included as Use Cases in annex K?
• Use Cases
• Multiple TPMRs, Multiple Domains
• Use with PBB

3
Multiple TPMRs, Multiple Domains
Domain A
Domain B
NNI
NNI
802.1 Provider Bridge
802.1 Provider Bridge
TPMR
TPMR
TPMR
TPMR
802.3 Ext Link
802.3 Ext Link
802.3 User Link
802.3 User Link
802.3 Ext Link

• Notes
• Management of Domain A is separate from that of
  Domain B
• Can TPMRs in Domain B be managed in this
  scenario? gt need something between them
• NNI is UNI in Enterprise-Provider examples

4
Multiple TPMRs, Multiple Domains
Domain A
Domain B
NNI
NNI
802.1 Provider Bridge
802.1 Provider Bridge
TPMR
TPMR
TPMR
TPMR
802.3 User Link
802.3 User Link
802.3 Ext Link
802.3 Ext Link
802.3 Ext Link

• Notes
• Management of Domain A is separate from that of
  Domain B
• Can TPMRs in Domain B be managed in this
  scenario? gt need something else

5
Multiple TPMRs, Multiple Domains
Domain A
Domain B
NNI
NNI
802.1 Provider Bridge
802.1 Provider Bridge
TPMR
TPMR
TPMR
TPMR
802.1ah encaps
802.3 Ext Link
802.3 Ext Link
802.3 User Link
802.3 User Link
802.3 Ext Link

• Notes
• Management of Domain A is separate from that of
  Domain B
• Can TPMRs in Domain B be managed in this
  scenario?
• NNI is UNI in Enterprise-Provider examples

6
Options to consider-I
User Link
User
SP1
SP2
User
UNI
UNI
ENNI
Extension Links
Extension Links
Would seem to be ok since -user link should
prevent E-W OAM issues - SNMP issues
7
Options to consider-II
Ext Link
User Link
User Link
User
SP1
SP2
User
UNI
UNI
ENNI
Extension Links
Extension Links
Would seem to present problems since Ext Link
will likely -not present SPx access to SPy TPMRs
for E-W OAM beyond pt of connectivity -not
prevent SPx access via SNMP stack to SPy TPMRs
8
Options to consider-III
User Link
User
User
SPA
SPA
OP1
UNI
UNI
ENNI
ENNI
Extension Links
Extension Links
Extension Links
AA Or A?A
Same as option I however limitation with AA No
access from SPa(1) to SPa(2) between 1 and 2
9
Options to consider-IV
Ext Link
User Link
User Link
User
User
SPA
SPA
OP1
UNI
UNI
ENNI
ENNI
Extension Links
Extension Links
Extension Links
AA Or A?A
Same issues as II
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Options to consider-V
OAM
SPA
SPA
OP1
ENNI
ENNI
mgmt
mgmt
Extension Links
Extension Links
Extension Links
Can this be achieved via hierarchy?