Ericsson MINI-LINK TN R3 ETSI, Technical Description

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Management
6.7.2.7 10/100BASE-T
Each NE has a 10/100BASE-T Ethernet interface for connection to a site LAN.
This interface offers a high speed DCN connection.
The interface is also used at sites holding MINI-LINK HC and MINI-LINK E
with SAU IP(EX).
6.7.2.8 USB
The USB interface is used for LCT connection using a local IP address.
6.7.3 IP Addressing
MINI-LINK TN R3 supports both numbered and unnumbered IP addresses.
Numbered IP addresses are used for the Ethernet interface and IP interfaces
configured as ABR. All other IP interfaces should be set up with unnumbered
IP addresses.
The IP interfaces with unnumbered IP address inherit the characteristics of
the Ethernet interface.
The use of unnumbered interfaces has several advantages:
• The use of IP addresses is limited. Using numbered interfaces for the PPP
links would normally require using one IP subnet with two addresses for
each radio hop. For a large aggregation site, this would imply a lot of
addresses.
• The planning of the IP addresses is simplified.
• The amount of configuration is reduced because only one IP address is
configured upon installation.
• Improved performance and smaller routing tables since the unnumbered
PPP connections are not distributed by OSPF.
6.7.4 IP Router
The IP router supports the following routing mechanisms:
• Open Short Path First (OSPF), which is normally used for routers within
the MINI-LINK domain.
• Static routing
There are two different ways to configure the IP router. The idea is that the
most common configurations are done using the EEM. When complex router
configuration and troubleshooting is required, a Command Line Interface (CLI)
is used, see Section 6.8.4 on page 120.
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