MINI-LINK DCN Reference Network

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1 Preface________________________________________________________________1
2 DCN document series____________________________________________________2
3 Acronyms and Glossary__________________________________________________3
4 Legend________________________________________________________________4
5 MINI-LINK Networks____________________________________________________5
6 DCN background_______________________________________________________7
6.1 GNM DCN basics________________________________________________________7
6.2 IP DCN basics___________________________________________________________8
6.3 Combined IP/GNM DCN networks__________________________________________9
7 DCN reference network_________________________________________________11
7.1 DCN channel alternatives_________________________________________________14
7.1.1 Direct/local DCN connection____________________________________________________14
7.1.2 Remote IP DCN connectivity____________________________________________________14
7.1.3 Remote GNM DCN connectivity_________________________________________________16
7.2 OMC site______________________________________________________________17
7.2.1 Locally connected MINI-LINK cluster_____________________________________________17
7.2.2 Remotely connected MINI-LINK cluster___________________________________________18
7.3 SDH hub site___________________________________________________________20
7.3.1 SDH hub site containing MIN-LINK HC and MINI-LINK E___________________________20
7.3.2 SDH hub site containing MIN-LINK HC and MINI-LINK TN__________________________23
7.3.3 SDH hub site containing MIN-LINK HC, MINI-LINK E, MINI-LINK TN________________24
7.3.4 SDH hub site with fiber access northbound_________________________________________29
7.4 PDH hub site___________________________________________________________30
7.4.1 Northbound DCN connections___________________________________________________30
7.4.2 PDH hub site containing MINI-LINK E and MINI-LINK TN___________________________30
7.4.3 PDH hub site containing MINI-LINK TN__________________________________________34
7.4.4 PDH hub site containing MINI-LINK E____________________________________________35
7.4.5 PDH hub site with leased line access______________________________________________36
7.5 PDH transit site_________________________________________________________37
7.6 PDH end leaf site________________________________________________________37
8 External DCN access___________________________________________________38
8.1 MINI-LINK HC_________________________________________________________38
8.2 MINI-LINK TN_________________________________________________________39
8.2.1 In-band DCN for MINI-LINK TN Ethernet bridge____________________________________41
8.2.2 Robbed Timeslot IP DCN connection______________________________________________43
8.3 MINI-LINK E__________________________________________________________47
9 IP DCN design________________________________________________________49
9.1 OSPF area design_______________________________________________________49
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9.2 IP addressing___________________________________________________________50
9.2.1 MINI-LINK TN______________________________________________________________51
9.2.2 MINI-LINK HC______________________________________________________________52
9.2.3 MINI-LINK E (SAU IP/IPEX)___________________________________________________52
9.2.4 IP addressing examples_________________________________________________________53
9.3 DCN network example___________________________________________________56
10 DCN solutions with external equipment___________________________________57
10.1 DCN solutions with DXX_________________________________________________57
10.1.1 Management of remote MINI-LINK E islands (V.24 tunneling)_______________________57
10.1.2 MINI-LINK TN in a MINI-LINK E cluster (Ethernet bridge)_________________________58
10.1.3 Transportation of management traffic in a SDH transport network_____________________59
10.1.4 Network example with DXX and MINI-LINK nodes_______________________________60
10.2 DCN solutions for multi-vendor networks___________________________________61
10.3 DCN solutions with AXX_________________________________________________64
10.4 DCN solutions with legacy Marconi SDH products____________________________65
10.5 Interoperability tests_____________________________________________________66
11 References__________________________________________________________67
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