Osi Virtual Routers - Cisco ONS 15600 Reference Manual

Chapter 9 Management Network Connectivity
Figure 9-23
•
Figure 9-24
OSS
FTP File
Server
The ONS 15600 uses FT–TD for the following file transfer processes:
•
•

9.7.7 OSI Virtual Routers

The ONS 15600 supports twelve OSI virtual routers. The routers are provisioned on the Provisioning >
OSI > Routers tab. Each router has an editable manual area address and a unique NSAP System ID that
is set to the node MAC address + n. For Router 1, n = 0. For Router 2, n = 1. For Router 3, n = 2, and
for Router12, n = 11. Each router can be enabled and connected to different OSI routing areas. However,
Router 1 is the primary router, and it must be enabled before Routers 2 through 12 can be enabled. The
Router 1 manual area address and System ID create the NSAP address assigned to the node's TID. In
addition, Router 1 supports OSI TARP, mediation, and tunneling functions that are not supported by
Routers 2 through 12. These include:
•
T–TD Protocol Flow
OSS
TL1
TL1
UDP TCP UDP TCP
IPv4 IPv4
LLC1 LLC1
LAN LAN
FT–TD—Performs an FTP conversion between FTAM and FTP. The FT–TD gateway entity
includes an FTAM responder (server) and an FTP client, allowing FTAM initiators (clients) to store,
retrieve, or delete files from an FTP server. The FT–TD gateway is unidirectional and is driven by
the FTAM initiator. The FT–TD FTAM responder exchanges messages with the FTAM initiator
over the full OSI stack. Figure 9-24
FT–TD Protocol Flow
FTP / IP
FTP
Client
Software downloads
Database backups and restores
TID-to-NSAP resolution
GNE
TL1 Gateway
ACSE
Presentation
Session
TP4
ISIS / CLNS
LAPD
DCC
shows the FT–TD protocol flow.
GNE
FT-TD
FTAM / OSI
FTAM
Responder
9.7.7 OSI Virtual Routers
ENE
TL1 Gateway
ACSE
Presentation
Session
TP4
ISIS / CLNS
LAPD
DCC
ENE
FTAM
Initiator
Cisco ONS 15600 Reference Manual, R6.0
TL1
9-37