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Cisco ONS 15600 SDH Reference Manual, Release 9.0
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Chapter 9 Management Network Connectivity
9.6.6 TCP/IP and OSI Mediation
9.6.5.3 Manual TARP Adjacencies
TARP adjacencies can be manually provisioned in networks where ONS 15600 SDHs must
communicate across routers or non-SDH NEs that lack TARP capability. In CTC, manual TARP
adjacencies are provisioned on the node view Provisioning > OSI > TARP > MAT (Manual Area Table)
tab. The manual adjacency causes a TARP request to hop through the general router or non-SDH NE, as
shown in
Figure 9-22
Manual TARP Adjacencies
9.6.5.4 Manual TID to NSAP Provisioning
TIDs can be manually linked to NSAPs and added to the TDC. Static TDC entries are similar to static
routes. For a specific TID, you force a specific NSAP. Resolution requests for that TID always return
that NSAP. No TARP network propagation or instantaneous replies are involved. Static entries allow you
to forward TL1 commands to NEs that do not support TARP. However, static TDC entries are not
dynamically updated, so outdated entries are not removed after the TID or the NSAP changes on the
target node.
9.6.6 TCP/IP and OSI Mediation
Two mediation processes facilitate TL1 networking and file transfers between NEs and ONS client
computers running TCP/IP and OSI protocol suites:
•
T–TD—Performs a TL1-over-IP to TL1-over-OSI gateway mediation to enable an IP-based OSS to
manage OSI-only NEs subtended from a GNE.
shows the T–TD protocol flow.
131957
Generic
router
DCN
DCN
Manual
adjacency