Hi
I am able to bring up Ubuntu15 and installed OVS as per the reference link [1]
suggested by Brady. But, the newly installed OVS (with NSH support) is not
behaving properly. The bridge (e.g ovs-vsctl add-br mybridge) creation is
resulting in error.
Query-1: Is the following OVS with NSH aware installation procedure proper
Step-1: Remove the existing OVS on Ubuntu15 Box
Step-2: Install the OVS as per the link [1]
Step-3: Created a binge (e.g ovs-vsctl add-br mybridge).
The step is not success.
Query-2 : Is there any "OVS binary distribution" with NSH support ?
[1]
https://wiki.opendaylight.org/view/Service_Function_Chaining:Main#Building_Open_vSwitch_with_VxLAN-GPE_and_NSH_support
bringup OVS as NSH aware
With Best Regards
Dhevendran Kulandaivel
Tata Consultancy Services Limited
Cell:- +919845439011
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
-----Dhevendran K/BLR/TCS wrote: -----
To: Brady Allen Johnson <[email protected]>
From: Dhevendran K/BLR/TCS
Date: 06/14/2017 03:17PM
Cc: Eshappa K <[email protected]>, Mani Mahalingam <[email protected]>,
"[email protected]" <[email protected]>, Sujith Kumar
K <[email protected]>, Sunil Desai <[email protected]>, Suresh Nagaraj
<[email protected]>, Divya T V <[email protected]>, Shivaji
Hogale/BLR/TCS@TCS
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Hi Brady
Thanks for pointing out this link. I am trying to bring up the right OS
environment as per the note in the link ( reference [1] ) . My Ubuntu is
16.04 with kernel version 4.8.0-54-generic on x86_64 box. I can create VM
for this purpose.
Query - 1: Can I get Ubuntu 15.10image ?
Query - 2: Is this possible in Ubuntu 14.04 / Ubuntu 16.04
Thanks in Advance
[1] . The version should built is 2.5.90. This version is not compatible with
kernel versions newer than 4.3.x. It works on Ubuntu 15.10 for example. More
information available on in this
With Best Regards
Dhevendran Kulandaivel
Tata Consultancy Services Limited
Cell:- +919845439011
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
Brady Allen Johnson ---06/12/2017 06:33:14 PM---Dhevendran, Looks like you're
not using a version of OVS with NSH installed. As you mentioned there
From: Brady Allen Johnson <[email protected]>
To: Dhevendran K <[email protected]>
Cc: Sunil Desai <[email protected]>, Sujith Kumar K
<[email protected]>, Suresh Nagaraj <[email protected]>, Divya T V
<[email protected]>, Eshappa K <[email protected]>, Mani Mahalingam
<[email protected]>, "[email protected]"
<[email protected]>
Date: 06/12/2017 06:33 PM
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Dhevendran,
Looks like you're not using a version of OVS with NSH installed. As you
mentioned there are no flows with VXLAN-GPE (notice its gpe (generic protocol
encapsulation), not gre) but more importantly, no flows with NSH.
You can use this link to install OVS with NSH:
https://wiki.opendaylight.org/view/Service_Function_Chaining:Main#Building_Open_vSwitch_with_VxLAN-GPE_and_NSH_support
Regards,
Brady
-----Original Message-----
From: Dhevendran K <[email protected]>
To: Brady Allen Johnson <[email protected]>
Cc: Eshappa K <[email protected]>, Mani Mahalingam <[email protected]>,
[email protected] <[email protected]>, Sujith Kumar K
<[email protected]>, Sunil Desai <[email protected]>, Suresh Nagaraj
<[email protected]>, Divya T V <[email protected]>
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Date: Mon, 12 Jun 2017 16:16:42 +0530
Hi Brady
Thanks for your immediate response (along with the patch update). With your
patch, we are able to see the configuration of SFFs on OVS. But, our
dump-flows results as follows (not matching with your result). By looking at
this, it is clear that the VXLAN-GRE tunnel flows are missing.
Query-1 : It would be great if you guide us to create the missing (or correct)
topology for this SFC environment.
=========================== Out put of "sudo ovs-ofctl dump-flows br-int"
=================================================
ubuntu@ubuntu-HP-Compaq-8200-Elite-SFF-PC:~/VCPE/SCF_app/sfc/vnfmgr/vnfmgr_odl$
sudo ovs-ofctl dump-flows br-int
[sudo] password for ubuntu:
NXST_FLOW reply (xid=0x4):
cookie=0x2b00000000000005, duration=475.147s, table=0, n_packets=0, n_bytes=0,
idle_age=475, priority=100,dl_type=0x88cc actions=CONTROLLER:65535
cookie=0x2b00000000000005, duration=475.147s, table=0, n_packets=0, n_bytes=0,
idle_age=475, priority=0 actions=drop
cookie=0x14, duration=473.558s, table=0, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=resubmit(,1)
cookie=0x2b00000000000005, duration=473.147s, table=0, n_packets=0, n_bytes=0,
idle_age=473, priority=2,in_port=1 actions=CONTROLLER:65535
cookie=0x14, duration=473.459s, table=1, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=drop
cookie=0x14, duration=473.459s, table=2, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=resubmit(,3)
cookie=0x14, duration=473.458s, table=3, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=resubmit(,4)
cookie=0x14, duration=473.458s, table=4, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=resubmit(,10)
cookie=0x14, duration=473.458s, table=10, n_packets=0, n_bytes=0, idle_age=473,
priority=5 actions=drop
ubuntu@ubuntu-HP-Compaq-8200-Elite-SFF-PC:~/VCPE/SCF_app/sfc/vnfmgr/vnfmgr_odl$
=========================== Out put of "sudo ovs-ofctl dump-flows br-int"
=================================================
Thanks in Advance
With Best Regards
Dhevendran Kulandaivel
Tata Consultancy Services Limited
Cell:- +919845439011
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
From: Brady Allen Johnson <[email protected]>
To: Dhevendran K <[email protected]>
Cc: "[email protected]" <[email protected]>,
"Eshappa K" <[email protected]>, Mani Mahalingam <[email protected]>,
"Sujith Kumar K" <[email protected]>, Suresh Nagaraj
<[email protected]>, Divya T V <[email protected]>, Sunil Desai
<[email protected]>
Date: 06/12/2017 02:46 PM
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Here is the OPNFV SFC gerrit patch with the config changes:
https://gerrit.opnfv.org/gerrit/36001
Here is the output I get from OVS:
$ sudo ovs-vsctl show
e5cf1e83-a101-45d8-8cb7-7f096434b549
Manager "tcp:159.107.45.19:6640"
is_connected: true
Bridge br-int
Controller "tcp:159.107.45.19:6653"
is_connected: true
Port "sff2-dp1"
Interface "sff2-dp1"
type: vxlan
options: {dst_port="6633", exts=gpe, key=flow, remote_ip=flow}
Port br-int
Interface br-int
type: internal
ovs_version: "2.5.90"
$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-int
OFPST_FLOW reply (OF1.3) (xid=0x2):
cookie=0x14, duration=8.013s, table=0, n_packets=0, n_bytes=0, priority=5
actions=goto_table:1
cookie=0x14, duration=8.013s, table=1, n_packets=0, n_bytes=0,
priority=250,nsp=4 actions=goto_table:4
cookie=0x14, duration=8.013s, table=1, n_packets=0, n_bytes=0,
priority=250,nsp=8388612 actions=goto_table:4
cookie=0x14, duration=8.013s, table=1, n_packets=0, n_bytes=0, priority=5
actions=drop
cookie=0x14, duration=8.013s, table=2, n_packets=0, n_bytes=0, priority=5
actions=goto_table:3
cookie=0x14, duration=8.013s, table=3, n_packets=0, n_bytes=0, priority=5
actions=goto_table:4
cookie=0x14, duration=8.013s, table=4, n_packets=0, n_bytes=0,
priority=550,nsi=255,nsp=4
actions=load:0xc0a8010b->NXM_NX_TUN_IPV4_DST[],goto_table:10
cookie=0x14, duration=8.013s, table=4, n_packets=0, n_bytes=0,
priority=550,nsi=254,nsp=4
actions=load:0xc0a8010c->NXM_NX_TUN_IPV4_DST[],goto_table:10
cookie=0x14, duration=8.013s, table=4, n_packets=0, n_bytes=0,
priority=550,nsi=254,nsp=8388612
actions=load:0xc0a8010b->NXM_NX_TUN_IPV4_DST[],goto_table:10
cookie=0x14, duration=8.013s, table=4, n_packets=0, n_bytes=0,
priority=550,nsi=255,nsp=8388612
actions=load:0xc0a8010c->NXM_NX_TUN_IPV4_DST[],goto_table:10
cookie=0x14, duration=8.013s, table=4, n_packets=0, n_bytes=0, priority=5
actions=goto_table:10
cookie=0xba5eba1100000102, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=660,nsi=253,nsp=4,nshc1=0 actions=load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000102, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=660,nsi=253,nsp=8388612,nshc1=0
actions=load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=254,nsp=4,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000103, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=253,nsp=4,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSI[]->NXM_NX_NSI[],move:NXM_NX_NSP[0..23]->NXM_NX_NSP[0..23],move:NXM_NX_NSH_C1[]->NXM_NX_TUN_IPV4_DST[],move:NXM_NX_NSH_C2[]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=255,nsp=4,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=255,nsp=8388612,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=254,nsp=8388612,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000103, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=655,nsi=253,nsp=8388612,in_port=1
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSI[]->NXM_NX_NSI[],move:NXM_NX_NSP[0..23]->NXM_NX_NSP[0..23],move:NXM_NX_NSH_C1[]->NXM_NX_TUN_IPV4_DST[],move:NXM_NX_NSH_C2[]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],IN_PORT
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=254,nsp=4
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0xba5eba1100000103, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=253,nsp=4
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSI[]->NXM_NX_NSI[],move:NXM_NX_NSP[0..23]->NXM_NX_NSP[0..23],move:NXM_NX_NSH_C1[]->NXM_NX_TUN_IPV4_DST[],move:NXM_NX_NSH_C2[]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=255,nsp=4
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=255,nsp=8388612
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0xba5eba1100000101, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=254,nsp=8388612
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSH_C1[]->NXM_NX_NSH_C1[],move:NXM_NX_NSH_C2[]->NXM_NX_NSH_C2[],move:NXM_NX_NSH_C3[]->NXM_NX_NSH_C3[],move:NXM_NX_NSH_C4[]->NXM_NX_NSH_C4[],move:NXM_NX_TUN_ID[0..31]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0xba5eba1100000103, duration=8.013s, table=10, n_packets=0, n_bytes=0,
priority=650,nsi=253,nsp=8388612
actions=move:NXM_NX_NSH_MDTYPE[]->NXM_NX_NSH_MDTYPE[],move:NXM_NX_NSH_NP[]->NXM_NX_NSH_NP[],move:NXM_NX_NSI[]->NXM_NX_NSI[],move:NXM_NX_NSP[0..23]->NXM_NX_NSP[0..23],move:NXM_NX_NSH_C1[]->NXM_NX_TUN_IPV4_DST[],move:NXM_NX_NSH_C2[]->NXM_NX_TUN_ID[0..31],load:0x4->NXM_NX_TUN_GPE_NP[],output:1
cookie=0x14, duration=8.013s, table=10, n_packets=0, n_bytes=0, priority=5
actions=drop
Regards,
Brady
From: Dhevendran K <[email protected]>
Sent: Monday, June 12, 2017 10:23 AM
To: Brady Allen Johnson
Cc: [email protected]; Eshappa K; Mani Mahalingam;
[email protected]; Sujith Kumar K; Suresh Nagaraj; Divya T V;
Sunil Desai
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Hi Brady
Thanks for your answer. Let me try out these examples and get back to you
With Best Regards
Dhevendran Kulandaivel
Tata Consultancy Services Limited
Cell:- +919845439011
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
Tata Consultancy Services | Technology, Digital Solutions, Consulting
www.tcs.com
Global Leader in IT Services, Consulting, Technology and Digital Solutions with
a Large Network of Innovation & Delivery Centers.
From: Brady Allen Johnson <[email protected]>
To: Dhevendran K <[email protected]>,
"[email protected]" <[email protected]>
Date: 06/12/2017 12:38 PM
Subject: Re: [sfc-dev] ODL Log Message while configuring the SFC
Dhevendran,
I have several answers from your internal discussions with Manuel.
First of all, while using option 7 of the vnfmgr python script, you can ignore
the messages related to "[RestConf-SFselect-HttpPut.json] does not exist". SFC
uses SF selection algorithms when multiple SFs of the same type exist when
creating a chain, and this REST json file selects which algorithm to use. But,
if you dont manually specify it via REST, internally the random algorithm will
be chosen by default.
Regarding your question about the SF "rest-uri", that's an optional
configuration that can be removed. There is a legacy SFC script called
sfc-agent that received ODL southbound REST SFC configuration. The sfc-agent is
no longer used.
I see from your SF JSON that there are some deprecated fields in the
configuration with respect to the latest version of ODL, such as the
"nsh-aware" which has been moved to the SF-type model. I'll submit a patch now
to the OPNFV SFC repo to update the config to the latest version of ODL, namely
Carbon.
Also, if you clone the ODL SFC repo, there are postman SFC examples that are
updated to the latest in <sfc-repo>/resources/configuration-examples.
I hope I covered all of your issues for now, but please let me know if you need
any more help.
Regards,
Brady
From: [email protected]
<[email protected]> on behalf of Dhevendran K
<[email protected]>
Sent: Friday, June 9, 2017 11:54 AM
To: [email protected]
Subject: [sfc-dev] ODL Log Message while configuring the SFC
Hi All
I am getting the the following error message while configuring ODL SFC feature
by referring [1]
As per the instructions provided , the following are completed
1. OpenDayLight (i.e. distribution-karaf-0.5.3-Boron-SR3.tar.gz ) is
installed and required features are installed
2. As per the instructions [1], the topology for SFC configuration is
simulated using mininet command "sudo mn --topo linear,4 --mac
--controller=remote,ip=10.132.206.138,port=6633 --switch
ovsk,protocals=OpenFlow13"
3. SFs are created as per the instructions in [1]
4. When I am trying to create the SFFs, the following ODL Log Message
are observed
============================= ODL Log Message ======================
2017-06-09 14:50:46,815 | INFO | on-dispatcher-44 | SfcSffToOvsMappingAPI
| 358 - org.opendaylight.sfc.ovs - 0.3.3.Boron-SR3 | Cannot build
OvsdbBridgeAugmentation. Missing OVS Bridge augmentation on SFF SffName
[_value=sff1]
2017-06-09 14:50:46,817 | INFO | on-dispatcher-44 | SfcSffToOvsMappingAPI
| 358 - org.opendaylight.sfc.ovs - 0.3.3.Boron-SR3 | Cannot build
OvsdbBridgeAugmentation. Missing OVS Bridge augmentation on SFF SffName
[_value=sff2]
============================= ODL Log Message ======================
Quary-1 : Is there anything missed here ?
[1] :
http://docs.opendaylight.org/en/stable-boron/user-guide/service-function-chaining.html
Service Function Chaining — OpenDaylight Documentation ...
docs.opendaylight.org
OpenDaylight Service Function Chaining (SFC) Overviewô OpenDaylight Service
Function Chaining (SFC) provides the ability to define an ordered list of a
network ...
Service Function Chaining — OpenDaylight Documentation ...
docs.opendaylight.org
OpenDaylight Service Function Chaining (SFC) Overviewô OpenDaylight Service
Function Chaining (SFC) provides the ability to define an ordered list of a
network ...
Thanks in Advance
With Best Regards
Dhevendran Kulandaivel
Tata Consultancy Services Limited
Cell:- +919845439011
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
Tata Consultancy Services | Technology, Digital Solutions, Consulting
www.tcs.com
Global Leader in IT Services, Consulting, Technology and Digital Solutions with
a Large Network of Innovation & Delivery Centers.
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