Tejas IP over E1 configuration

1. E1 Media via Thejas e Node B

2. Scenario
Point to Point E-1 link is set up between two Tejas eNodeBs E-1 ports of CEF 12T cards.
Uplink ports of both eNodeBs are connected to CPAN Media.[ This can be any TXMN media
supporting Ethernet transport]
One 2G BTS, working on E1 media, is collocated with eNodeB at Location:B ( which may be a
remote location without any additional TXMN equipment and so we are trying to transport this
E1 via e Node B). But it is assumed that some dark fiber is available from Location B to a nearby
location where media like CPAN is available, through which present services are working .
At Location A , some TXMN equipment, like CPAN/MADM, is available for transporting E1
towards concerned BSC.
Plz see the diagram on next slide
The 2G BTS of Location B is connected to one of the E1 port of the CEF card of E NodeB . This E1
is mapped to a specific VLAN (100 here) in the Backplane of CEF card of the E Node B (using MEF-
8 protocol CES Interworking). This VLAN is further configured towards the uplink port of the e
NodeB ( that port is connected to nearby CPAN node port via dark fibre) using an E Line service
of CEF card.
A CPAN service is created between CPAN ports to which e Node Bs are connected for
transporting this specific VLAN .
At location A the reverse process is done. This specific VLAN is brought to backplane via an
Eline service from uplink port of e Node B (at location A). From Backplane this VLAN is adapted
to one of the E1 port of the CEF Card (using MEF-8 protocol CES Interworking).
This E1 port of CEF card at location A is connected toan existing TXMN media which can
transport the E1 towards BSC side.
How to setup e1 media for 2G BTS through Tejas eNodeB media card (CEF 12T)

3. 2G BTS
e1- built-up
STM-1
Huawei BSC
e1-
built-up
STM1
MADM/CPAN
Dark Fiber/CPAN/MAN/MADM
P1 P2 P3 P4 P5
Mobile Core Network
e1 Service
e1 Over Ethernet
STM-1 Service
Dark Fiber
Ethernet Service
P1 P2 P3 P4 P5
Location-A
CEF 12T
Location-B
CEF 12T
e1 Port

4. 1. Make E1 admin status up in both e Node Bs
2. Assign unique CESIWF MAC for both nodes [ Complete step 1 & 2 before going to 3 ]
3. Complete CES Configuration for mapping E1 port to VLAN in backplane
4. Create flow points
5. Create Eline service using the flow point now created now for connecting VLAN
from Backplane to Uplink port of E Node B
6. Ensure that CPAN service for transporting VLAN 100 between the CPAN ports to
which e node Bs are connected.
7. Repeat steps 3, 4 & 5 for location A also.
Steps for configuration

5. 2G BTS
e1- built-up
STM-1
Huawei BSC
e1-
built-up
STM1
MADM/CPAN
Dark Fiber/CPAN/MAN/MADM
P1 P2 P3 P4 P5
Mobile Core Network
e1 Service
e1 Over Ethernet
STM-1 Service
Dark Fiber
Ethernet Service
P1 P2 P3 P4 P5
Location-B
CEF 12T
Location-A
CEF 12T
e1 Port

6. e1-1 e1-2 e1-3
e1-4
Log in and Make E1 admin status up in both e Node Bs-1/2

7. Log in and Make E1 admin status up in both e Node Bs-2/2
Submit after configuring the parameters as in fig .

8. Assign unique CEFIWF MAC for both nodes : Step 2
We need to assign a unique MAC for CESIWF. For this we suggest this method.
Note down the MAC address of the e Node B from NE Information

9. Assign unique CEFIWF MAC for both nodes : Step 2
Go to IWFMACAddress under L2 ServicesService switch-99
Click on Edit

10. Assign unique CEFIWF MAC for both nodes : Step 2
Modify one digit of the system MAC and update it in the CESIWFMacAddress field
Click on Submit

11. Assign unique CEFIWF MAC for both nodes : Step 2

12. CES Configuration for mapping E1 port to VLAN in backplane-Step 3

13. CES Configuration for mapping E1 port to VLAN in backplane-Step 3
Take care to configure Peer MAC of A as the IWF MAC of B and vice versa

14. CES Configuration for mapping E1 port to VLAN in backplane-Step 3

15. Create flow points Step 4
Enter the parameters as above and click create

16. Create Eline service using the flow point now created
now for connecting VLAN from Backplane to Uplink port
of E Node B :Step -5
Flow point template
created in last step

17. Create Eline service using the flow point now created
now for connecting VLAN from Backplane to Uplink port
of E Node B :Step -5

18. Create Eline service using the flow point now created
now for connecting VLAN from Backplane to Uplink port
of E Node B :Step -5

19.  We can replace existing CPEs, A nodes in remote locations
 BTS end E1 monitoring and management can be done from OMCR itself by giving
loop back and checking E1 alarm status.
 No need for physical back to back connectivity for establishing E1 connectivity.
 The A and B Location can be anywhere with some Ethernet connectivity
availability.
 Ethernet services can also be transported towards the nearest TXMN location ( B)
which can carry like EB ckts, LCOs etc upto 10 Gbps with some constraints
 Now only 4 E1 can be dropped at central location via one collocated e Node B.
 If we can use CEF cards with STM-1 ports in e Node Bs, we can place such e Node
Bs near to BSC location and drop upto 63 E1s which may be from different parts
of Kerala Circle itself
 We are trying to configure Thejas MADM for such purpose
Opportunities , Constraints and Future road map