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18-13
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 18 Configuring Interfaces
Configuring DS3 and E3 Interfaces
Configuring DS3 and E3 Interfaces
The 45-Mbps DS3 and the 34-Mbps E3 port adapters are used for wide-area connections, to link multiple
campuses, or to connect to public networks.
DS3 and E3 Interface Configuration
You can configure your switch router with only the number and type of interfaces required, with up to
64 DS3 or E3 interface ports on the Catalyst 8540 MSR and up to 32 DS3 or E3 interface ports on the
Catalyst 8510 MSR and LightStream 1010 ATM switch router.
Traffic-pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rate.
This feature is useful when communicating with a slow receiver or when connected to public networks
with peak-rate tariffs.
Note Network clocking configuration options are applicable only to DS3 quad interfaces.
Default DS3 and E3 ATM Interface Configuration without Autoconfiguration
If ILMI has been disabled or if the connecting end node does not support ILMI, the following defaults
are assigned to all DS3 or E3 interfaces:
• ATM interface type = UNI
• UNI version = 3.0
• Maximum VPI bits = 8
• Maximum VCI bits = 14
• ATM interface side = network
• ATM UNI type = private
The following defaults are assigned to all DS3 port adapter interfaces:
• Framing = cbit-adm
• Cell payload scrambling = off
• Clock source = network-derived
• LBO = short
• Auto-ferf on loss of signal (LOS)= on
• Auto-ferf on out of frame (OOF)= on
• Auto-ferf on red = on
• Auto-ferf on loss of cell delineation (LCD)= on
• Auto-ferf on alarm indication signal (AIS)= on
The following defaults are assigned to all E3 port adapter interfaces:
• Framing = g.832 adm
• Cell payload scrambling = on
• Clock source = network-derived