Network engineer jobs

[jefferson1]

2 minutes ago, VictoryTDP said:

Sip methods ( Requests)- Invite, Cancel, refer, Ack, Prack, Subscribe, Notify etc.

Responses - 6 types

1xx - provisional ( 100trying , 180 Ringing, 183 session progress,  181)

2xx - final response 200 OK, 202 Accepted 

3xx - redirect response - 300, 301, 302 etc...

4xx - user error

5xx - server error

6xx - Global error response 

 

sip is a request/ response based protocol similar to http

Iget confused with ip addresses that are with requests and responses

where its comong from and where its going.

also sequence of steps for a request, what comes first and next

[VictoryTDP]

Every request in SIP ( INVITE, CANCEL, SUBSCRIBE, NOTIFY) will end with a final response which is 200OK, except ACK which has no response. 

 

Every errror response 3xx through 6xx end with an ACK. 

 

[VictoryTDP]

4 minutes ago, jefferson1 said:

Iget confused with ip addresses that are with requests and responses

where its comong from and where its going.

also sequence of steps for a request, what comes first and next

The ip addresses are the network elements in your network architecture from where the requests or responses are originating or terminating.

BASIC Call flow

party A ( phone #111-111-1111) calls party B ( phone#222-222-2222)
 

1.  party A's phone sends INVITE --------> Party B ( The INVITE traverses through multiple servers/proxies) in your network that's where you see IP address in the RURI( request URI, FROM, TO CONTACT headers)
2.  Party B responds with 100 Trying 
3. then Party B's phone when it is ringing, it responds with 180 RInging
4. 200 OK is the final response from Party B to party A ( Remember, INVITE request in step 1, so this is the final response for that INVITE).
5. Party A sends  ACK (similar to 3 way handshake in TCP) to party B.
    
6. At this point the RTP or voice path is established , party A and B talk.
7. Whichever party hangs up the phone, for example say B hangs the phone here, then party B's device sends  BYE request.
8. For the above BYE Request, the final response from party will be 200OK and the call ends.

[VictoryTDP]

@jefferson1 SIP messaging is straightforward once you understand the basic call flow.

 

Always keep this in mind, SIP is based on the REQUEST/RESPONE model as simple as that.

[jefferson1]

34 minutes ago, VictoryTDP said:

The ip addresses are the network elements in your network architecture from where the requests or responses are originating or terminating.

BASIC Call flow

party A ( phone #111-111-1111) calls party B ( phone#222-222-2222)
 

1.  party A's phone sends INVITE --------> Party B ( The INVITE traverses through multiple servers/proxies) in your network that's where you see IP address in the RURI( request URI, FROM, TO CONTACT headers)
2.  Party B responds with 100 Trying 
3. then Party B's phone when it is ringing, it responds with 180 RInging
4. 200 OK is the final response from Party B to party A ( Remember, INVITE request in step 1, so this is the final response for that INVITE).
5. Party A sends  ACK (similar to 3 way handshake in TCP) to party B.
    
6. At this point the RTP or voice path is established , party A and B talk.
7. Whichever party hangs up the phone, for example say B hangs the phone here, then party B's device sends  BYE request.
8. For the above BYE Request, the final response from party will be 200OK and the call ends.

thank you... i will see a call tomorrow

 

ma environment lo multiple apps unnai which use sip.... which makes it confusing

 

example A->B->C

 

[kakatiya]

Cisco Network Engineer (LAN, WAN, SDWAN migration)

 

Plano, Texas

 

6 Months

[kakatiya]

- BSCS or equivalent technical degree preferred

- 5+ years of professional engineering experience

- Experience with Python

- Strong proficiency with Git

- Deep understanding of OOP and threading principles

 

Nice to have:

- Experience with Embedded Linux

- Experience with hardware / low-level protocols such as I2C, UART, CAN, etc.

- Experience with Docker

- Experience with AWS or GCP

So if this sounds like you and you're looking to join an incredible company, please apply today!

Applicants must be authorized to work in the U.S

[kakatiya]

location: Southlake, Texas
job type: Contract
salary: $60 - 65 per hour
work hours: 8am to 4pm
education: Bachelors

[kakatiya]

Network Admin - Auburn Hills MI
Contract
Rate - $50/hr C2C

Experience and Skills required

· Minimum 7 Years of Domain Experience.

· Troubleshoot Routing Loop

· Troubleshoot Asymmetric Routing & STP Loop issues

· Troubleshoot Load Balancers issues for Application flow.

· Working on Riverbed related issues

· Analyzing the outputs of all the tools and making recommendations example: High CPU utilization on core device at Data Center

· Implementation of Operational Changes & coordination with project team for project related Changes.

· Assigning new users in guest VLAN

· Configuring/Troubleshooting Routing protocols – EIGRP, OSPF, BGP

· Configuring/Troubleshooting LAN Switching – VLAN, VTP, STP, EtherChannel, CoS

· Qos Quality of service configuration

· Configuring/Troubleshooting WAN – MPLS & excellent knowledge on BGP

· Configuring/Troubleshooting TCP/IP protocol suite, Quality of Service

· Configuring/Troubleshooting Application protocols - HTTP, HTTPS, FTP, SMTP, SNMP, SSL etc.

· Configuring/Troubleshooting Network Security - IPSec VPN, AAA Architecture, TACACS+, RADIUS

· Support Data Center Architecture – Network, Server, Storage

· Configuration & troubleshooting experience on Cisco Nexus 7000/5000/2000 Series of switches required

· Configuring/Troubleshooting Cisco IOS Software

· Configuring/Troubleshooting of WAN Acceleration/optimization – Cisco WAAS or Riverbed

· Configuring/Troubleshooting of Application Load balancers – Citrix Netscalar

· Able to communicate with the customer and be able to present solutions to customers at CIO, CXO level

· Open for 24x7 availability

· Provide specialized hardware / software / network problem diagnosis / resolutio

[kakatiya]

Network Engineer | 30 Months Contract | Various client locations

 

 

 

JOB DUTIES:

 

The successful candidate will join the Core Network Engineering team with responsibilities to engineering and deploy the network fabric configuration to support the Cloud Platform applications.. The candidate will assume engineering responsibilities for the Spine/Leaf fabric networks to successfully engineering, automate and deploy the network configuration in mobile switching center locations throughout the Western territory. The candidate must work closely with the Capacity Planning, Design and Operations teams to implement our strategic technology goals in support of the Spine/Leaf fabric platform (eNSE). The candidate will work to support strategic technology goals including the ongoing migration of core elements to and eNSE. The candidate will work to create an environment of teamwork and cooperation with all stakeholders including; territories, edge, and design. Be visible and lead by example.

 

 

 

The successful candidate will demonstrate strengths in the following areas:

 

Responsible for engineering IP edge networks at Service Aggregation Points (SAP) to support the networking configuration needed to build and migrate the applications.

Engineer the IP (L2/L3) eNSE network configuration through the use of automated systems for configuration deployment.

Read and understand new and changing design models and templates to support new application versions, migrations and deployments.

Provide feedback to automation teams on how to update workflows.

Add new Access Leafs (ALs) to the eNSE fabric network as Cloud Platforms grow and expand.

Engineering networ

[kakatiya]

 

Job Title :- Network Engineer with Strong experience in F5 Load balancing

Job Location :- Richmond, VA (100% Remote)

Duration: Contract

 

Job Description :-

 

**Experience as a Network Services Specialist-Managed Network Services Integration

**Must have Good Working Knowledge of F5 load balancing platforms with networking knowledge

** Good Working Knowledge to Analyze, implement and maintain F5 Load balance infrastructure and configuration

** Good Working Knowledge to Inspect data packets and TCP, IP flow, in network and application flow

**Experience to Support daily day to day operations

**3+ years' of experience is required.

**College level education is required 

 

 

If you are interested, qualified, available, 

[Pachhiboothu]

15 minutes ago, kakatiya said:

 

Job Title :- Network Engineer with Strong experience in F5 Load balancing

Job Location :- Richmond, VA (100% Remote)

Duration: Contract

 

Job Description :-

 

**Experience as a Network Services Specialist-Managed Network Services Integration

**Must have Good Working Knowledge of F5 load balancing platforms with networking knowledge

** Good Working Knowledge to Analyze, implement and maintain F5 Load balance infrastructure and configuration

** Good Working Knowledge to Inspect data packets and TCP, IP flow, in network and application flow

**Experience to Support daily day to day operations

**3+ years' of experience is required.

**College level education is required 

 

 

If you are interested, qualified, available, 

If this is 100% remote i’m interested 

[kakatiya]

voip

• Knowledge of IP telephony, Cisco CUCM and Avaya Communication Manager
• Knowledge of traditional fixed voice (PABX) technologies
• Understanding of ISDN and SIP trunking
• Experience supporting Skype and Voice collaboration
• Knowledge in ITIL processes, incident, problem and change management
• Ability to handle concurrent tasks with appropriate priority
• Good analysis and problem solving skills

 

[kakatiya]

Network Security Engineer- VPN Silverdale WA(Onsite)
Contract
Rate - $50/hr C2C
 

Work-Experience: 4-6 Years of total IT experience with significant experience in managing group of professional to deliver IT Security services for client based environment.
Type of Experience:

• Candidate must be good with Palo Alto, Cisco firewalls and Multi-Domain Security Management
• Expertise in Site-to-Site VPN for all platform- Cisco ASA, Firepower, Palo Alto, VPN Concentrator, etc.
• Experience should include security policy development, security education, Network Penetration testing, Application vulnerability assessments, risk analysis and compliance testing.
• Knowledge of IT Security technologies, Operating Systems, Database, routing and switching, and endpoint security solutions
• Knowledge of information security standards (e.g., ISO 17799/27002), rules and regulations related to information security and data confidentially (e.g., FERPA) and desktop, server, Application, database, Network security principals for risk identification and analysis. 
• Exposed to best practice design & Implementation methodology
• Identifies ,isolates and resolves network security problems
• Experience with Problem and Change Management processes and applications.
• Excellent written and verbal communication skills. Technical Certification are advantage
• Excellent leadership skills and teamwork skills. Results oriented, high energy, self-motivated.
• Palo Alto policy management (making changes to the ACLs, 

[kakatiya]

Role name            Engineer               Role Description "4+ Yrs Data Center Support Ex ...
Competencies      HiTech : SAN or NAS with Infrastructure Services, DCS_System Admin_Windows...   
Experience (Years)            4-6
Essential Skills    4+ Yrs Data Center Support Experience Knowledge of Networking Devices and Concept Experience on Windows Server Admin, ADTroubleshooting Skills(Hardware, OS) Work Experience in using iLO/DRAC/KVMoIPMigration and decommision of hardwareWorking experience with Server, Network and Storage DeploymentsProvisioning and Racking of hardwareKVM based remote access systemsExperience on supporting SAN infrastructureBackup & archive loaders and libraries"               
Desirable Skills   "Strong customer relations exp ...
Redmond,WA
 
 
 

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