User's Manual

Doc. No.
Rev.
Date
DRAFT
1.01
2012-01-27
Damm Cellular Systems A/S, Denmark
TetraFlex
®
7.5 Manual - IP Backbone network layout and
configuration
TetraFlex® 7.5 Manual 2-158
There will, at all times when the network is activated, be a background load on the router
network. The load origins from the control messages exchanged between the BSCs. The
control packets will load the router network with 0.3 Kbit/s per active BSC.
2.16.5.6 Log server:
The load on the RP relating to a log server being present in the network depends on different
factors. The log server must have connection to the multicast network. Any traffic, relevant to
the log server, will be signaled to log server at the log server’s multicast address. Log server
will – in case it is configured to log a given activity – join the given CMoIP group. Joining the
given CMoIP will make the data available for the log server. From this – it is log server
configuration and network configuration dependant how the traffic to the log server loads the
routers and especially the RP. As it is the same CMoIP stream that is joined – the bandwidth
per logged activity is still 22 Kbit/s.
2.16.6 The IP interconnection scheme of TetraFlex
®
per site
All communication between the components of the TetraFlex
®
is based on IP. In relation to
the outdoor type TetraFlex, the SB421 service box with its Windows XP operating system
contains a DHCP server. IP address of the SB is x.x.x.10 and the 1
st
BS421 has IP address
x.x.x.11, the 2
nd
BS421 has x.x.x.12, the 3
rd
has x.x.x.13 and the 4
th
has x.x.x.14. In case a
redundant SB is in use, it must be numbered x.x.x.19.
The SB421 has the LAN address x.x.x.10 or x.x.x.19. The same must be the case for the
BSC configuration on the given SB421.
In relation to indoor type TetraFlex
®
– the BSC412 must be configured LAN port x.x.x.10,
respectively .19 for redundant BSC.
Above address assignments are guidelines. But to ensure efficient support in case of trouble
– it is recommended to keep this structure.
Node No
BSC LAN
2
nd
BSC LAN
1
st
BS421
2
nd
BS421
3
rd
BS421
4
th
BS421
1
172.16.1.10
172.16.1.19
172.16.1.11
2
172.16.2.10
172.16.2.19
172.16.2.11
172.16.2.12
172.16.2.13
172.16.2.14
3
172.16.3.10
172.16.3.19
N/A
N/A
N/A
N/A
Figure 2-56: Addressing examples
Above is shown a small example on addressing according to recommendation. Node 1 is a
single carrier outdoor. Node 2 is a 4 carrier outdoor. Node 3 is an indoor. All three nodes
have redundant BSC.
It can be observed that 3
rd
octet of IP address is equal to the node number.
Use the TetraOM to connect to the BSC locally. Issue command “F71” to check the local
settings for the IP connections. The command will list the LAN and WAN IP addresses which
are set in the BSC. Make sure these addresses correspond with the actual settings on the
LAN and WAN cards in WinXP. Also this is where you set the IP address of the first TR on
the system.