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Chapter 13 Management Network Connectivity
13.6.6 TCP/IP and OSI Mediation
Figure 13-23
Manual TARP Adjacencies
13.6.5.4 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dynamically updated, so outdated entries are not removed after the TID or the NSAP changes on the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.
13.6.6 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.
Figure 13-24
shows the T–TD protocol flow.
131957
Generic
router
DCN
DCN
Manual
adjacency
Summary of Contents for 15454-DS1-14= - 1.544Mbps Expansion Module
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