Tl1 Sessions; Tl1 Gateway And Ene Sessions; Figure 2-25 Example Of A Gne Topology; Table 2-3 Number Of Tl1 Sessions Per Platform - Cisco ONS 15454 Reference Manual

2.3.2 TL1 Sessions

Figure 2-25
Number of connections
2.3.2 TL1 Sessions
Each NE can support up to a maximum of 20 concurrent communication sessions (connections from an
OS/NE to the GNE). The TL1 connections can be made through telnet sessions from the LAN or from
the craft/serial port connection on the NE. One TL1 session is reserved for the active serial port
connection. The remaining 19 sessions are used for TL1 sessions through the LAN (wire-wrap, active
serial port, or DCC).
Table 2-3
Platform
Cisco ONS 15454
Cisco ONS 15310-CL
Cisco ONS 15310-MA
Cisco ONS 15600

2.3.3 TL1 Gateway and ENE Sessions

Only a limited number of TL1 users logged into an NE at any given time can establish sessions to other
ENEs. The active serial port sessions are reserved and can always become a GNE session. The number
of ENE sessions is based on the number of gateway communications sessions (GNE sessions).
Each NE can support up to 12 concurrent communication gateway sessions, depending on the NE type.
The maximum number of ENE sessions also varies depending on the NE type.
Cisco ONS SONET TL1 Command Guide, R6.0
2-26
Example of a GNE Topology
OSS
Single connection
Node 1 Node 2
Table 2-3 shows the number of serial port and LAN connections per platform.
Number of TL1 Sessions per Platform
Number of Serial Port
Sessions
1
1
2
2
Chapter 2
TLI Gateway node
Command/Response
Autonomous messages
Node 3
Number of LAN
Sessions
19
19
18
18
Procedures and Provisioning
Total Number of TL1
Sessions
20
20
20
20