Juniper JUNOSE 10.0.X PHYSICAL LAYER, Configuration Manual

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Bandwidth Limitations of Shared Tunnel-Server Ports
Bandwidth limitations for shared tunnel-server ports and tunnel-service interfaces
depend on bandwidth restrictions, if any, that are in effect for the module on which
the shared tunnel-server port resides.
Exchanging Tunnel-Server Modules
Tunnel-server modules are available in different hardware revisions that support
varying numbers of tunnel-service interfaces. For more information about determining
the hardware revision on a module, see
ERX Module Guide, Table 1, Module
Combinations , or E120 and E320 Module Guide, Table 1, Modules and IOAs .
When you exchange a tunnel-server module with a lower capacity for tunnel-service
interfaces with a module that supports a higher capacity, the tunnel-server port
maintains the original number of provisioned tunnel-service interfaces. By using the
all-available keyword with the max-interfaces command, you can configure the
tunnel-server port to automatically adjust the number of provisioned tunnel-service
interfaces to the maximum value supported by the new module.
When you exchange a tunnel-server module that has a higher number of provisioned
interfaces than the new module’s capacity, the module adjusts the provisioned
number of interfaces to the maximum value that the module supports.
Table 23 on page 220 displays sample capacity, configuration, and utilization values
for exchanging tunnel-server modules with different capacities.
Table 23: Sample Capacity, Configuration, and Utilization Values for Tunnel-Service
Interfaces
New
Utilization
New Provisioned
Interfaces
(max-interfaces
command)
New
Capacity Old
Utilization
Old Provisioned
Interfaces
(max-interfaces
command)
Old
Capacity
5000 5000 16,000 5000 5000 8000
8000 8000 16,000 8000 8000 8000
16,000 all-available 16,000 8000 all-available 8000
5000 5000 8000 5000 5000 16,000
8000 8000 8000 16,000 16,000 16,000
8000 all-available 8000 16,000 all-available 16,000
Unprovisioned Tunnel-Service Interfaces
Tunnel-server ports exist whether or not they have been configured. This means that
you cannot delete a tunnel-server port from a module. However, you can unprovision
220 ■
Tunnel-Service Interface Considerations
JUNOSe 10.0.x Physical Layer Configuration Guide