CCNP Trading Network Engineer - Chicago, IL

CCNP Trading Network Engineer - Chicago, IL
A growing trading firm in Chicago is actively seeking a CCNP with prior experience in the financial industry. Experience must include working with Multicast, EIGRP, OSPF, and high performance, low latency networking.

Permanent role in Chicago's loop. No sponsorship available.
e-mail me: rhale@orion-recruiting.com

Per-Destination vs. Per-Packet Load Balancing

You can set load-balancing to work per-destination or per-packet. Per-destination load balancing means the router distributes the packets based on the destination address. Given two paths to the same network, all packets for destination1 on that network go over the first path, all packets for destination2 on that network go over the second path, and so on. This preserves packet order, with potential unequal usage of the links. If one host receives the majority of the traffic all packets use one link, which leaves bandwidth on other links unused. A larger number of destination addresses leads to more equally used links. To achieve more equally used links use IOS software to build a route-cache entry for every destination address, instead of every destination network, as is the case when only a single path exists. Therefore traffic for different hosts on the same destination network can use different paths. The downside of this approach is that for core backbone routers carrying traffic for thousands of destination hosts, memory and processing requirements for maintaining the cache become very demanding.

Per-packet load-balancing means that the router sends one packet for destination1 over the first path, the second packet for (the same) destination1 over the second path, and so on. Per-packet load balancing guarantees equal load across all links. However, there is potential that the packets may arrive out of order at the destination because differential delay may exist within the network. In Cisco IOS software, except the release 11.1CC, per packet load balancing does disable the forwarding acceleration by a route cache, because the route cache information includes the outgoing interface. For per-packet load balancing, the forwarding process determines the outgoing interface for each packet by looking up the route table and picking the least used interface. This ensures equal utilization of the links, but is a processor intensive task and impacts the overall forwarding performance. This form of per-packet load balancing is not well suited for higher speed interfaces.

Per-destination or per-packet load-balancing depends on the type of switching scheme used for IP packets. By default, on most Cisco routers, fast switching is enabled under interfaces. This is a demand caching scheme that does per-destination load-balancing. To set per-packet load-balancing, enable process switching (or disable fast switching), use these commands:

Router# config t
Router(config)# interface Ethernet 0
Router(config-if)# no ip route-cache
Router(config-if)# ^Z

Now the router CPU looks at every single packet and load balances on the number of routes in the routing table for the destination. This can crash a low-end router because the CPU must do all the processing. To re-enable fast switching, use these commands:

Router# config t
Router(config)# interface Ethernet 0
Router(config-if)# ip route-cache
Router(config-if)# ^Z

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094820.shtml

Network Engineer CCNP CCNA - Chicago

Address: Chicago, IL 60689 (map)
Date Listed: 11/03/09
Job Type: Full-time

Company Request Technology, LLC
Position Title Network Engineer CCNP CCNA CJ NetworkTrade
Job Code 2876469
Job Location Chicago, IL -
Description


Prestigious Proprietary Trading Firm, located in the Chicago Loop, is currently seeking an experienced Network Engineer. Candidate will be part of the global technology and infrastructure team and contribute to cutting edge technology. Some of the responsibilities will include design, install, and support of Routing, Switching, and security/VPN technologies in the WAN/LAN environments. Abilities to work effectively as a part of a team and excellent communication skills are crucial in this role. Experience and/or interest working in the Financial Trading industry are a plus.


QUALIFICATIONS


*Minimum of 3 years in a technical networking environment

*Experience with designing, configuring and troubleshooting complex network backbones

*Experience in IGP and BGP routing protocols (EIGRP, OSPF, RIP, and BGP) in a Cisco environment

*Experience in VLAN technology, VTP and STP protocols

*Experience in Access Control Lists, Cisco Firewalls, VPN technologies and other security technologies

*Solid understanding of Cisco 2600, 2800, 3600 Routers and 3550, 3560 Switches Experience with 7200, 6500, and 7600 is a plus

*Familiarity with private lines, T1, T3, and OC technologies

*Experience in Metro-Ethernet technologies

*Experience in network monitoring, management tools

*Knowledge and experience in multicast technology is a plus

*Knowledge of VOIP and QoS is a plus

*Market Data Integration knowledge is a plus

*Work with Vendors to resolve network related issues

*Documentation and design of current and new installations

*Working knowledge of public and private peering.

*Functional knowledge of cable standards, multi/single mode fiber

*Plan and implement future installations of network equipment and capacity planning

*High-level analysis and troubleshooting of network infrastructure



Desired Skills:


Non-Tech Skills:


About Request Technology, LLC:

Since 1984, Request Technology has been successfully placing thousands of people in rewarding IT positions throughout the United States. How? Experience is the key. REQUEST's executive recruiters are established Associate's, each with years of in-depth recruiting experience, many of whom have practical industry experience. They stay abreast of trends -- which offer you extensive knowledge of what's going on in the field. At REQUEST, our recruiters also partner with our clients - which include Fortune 500 companies as well as ambitious entrepreneurial businesses whose growth and success offer exciting opportunities. Our clients invest significant resources while providing their employees with the latest technologies resulting in development and career advancement.



Pay Rate: 85k-110k; 10-15% Bonus
Start Date: ASAP
Emp. Type: Full Time
# of Openings: 1
Location: Chicago, IL -
Overtime Pay: None
Job Number: 35781286 : JS2323622/CJ-NETWORKTRADE
Date Posted: 11/1/2009

Request Technology, LLC

Other jobs with this company.

Attention: Recruiter

200 East 5th Avenue

Suite 116

Naperville, IL 60563
Call: 630-717-5865
Email: Send an email to Craig.Johnson.E5F96.7A91A@mail.jobserve.com



Ad ID: 438837

WAN Engineer - Chicago, IL

Job Title: WAN Engineer
Company Name: Make Corporation
Location: Chicago, IL
Profession: Network Design/Engineering

Job Description:
Responsibilities:

- Assist in maintaining, configuring, installing and testing network hardware and software. Includes but not limited to routers, switches, hubs and firewalls.

- Provision, configure and deploy VPN connectivity to systems. Assist customers with their configuration, troubleshoot customer issues to resolution.

- Provide support to front line GSS staff in being primary customer contact for customer issues.

- Take ownership of customer issues and drive them to completion ensuring high levels of customer satisfaction when the issue is resolved

- Maintain accurate network documentation for moves, adds, changes, and deletes. Properly document problem situations and resolutions. Document policies and procedures for resolving customer issues. Maintain accurate documentation of WAN.

- Develop and maintain harmonious relationship with AT&T GCSC as well as other carrier NOCs in order to accelerate issue resolution.

- Develop and maintain positive working relationships with other internal departments (e.g. GAMs, Operations, GSA, etc.) Provide assistance to other members of the staff when needed.

- Utilize and maintain network management systems to proactively identify fault detection, to identify issue correlation.

Experience Required:
2-4 years proficiency in the following:
Ethernet LAN/WAN
TCP/IP
Cisco Routers (2600 to 7200)
Cisco Switches (3500 to 6500)
VPN
FIX Protocols
Firewalls
Financial industry experience is a big plus

Excellent phone technical troubleshooting skills are a must

Team size = 6 engineers + 6 more on the NOC
Primarily an 8-5 shift with some Saturday morning events. Also for overseas support, some earlier hours events may occur.

Interview Process: Phone screen 1st for 15-20 minute technical screen followed by in-person interview with team

http://taxguruhelp.jobamatic.com/a/jobs/find-jobs

Taking the Mystery Out of Loopbacks

A loopback interface is a software-only interface used to emulate an interface. It can be assigned an IP address. Loopback interfaces also have specific purposes with some routing protocols such as OSPF.

A loopback interface can be pinged, and the subnet can be advertised in routing updates. Therefore, loopback interfaces are ideal for simulating multiple networks attached to the same router. For lab purposes, our router does not need multiple LAN interfaces to demonstrate multiple subnets and VLSM. Instead, we use loopback interfaces.

Sales Consultant and Network Technician Positions

The two links listed below for a Sales Consultant and a Network Technician just came in to me from Chris Gerrib, VP Technology Republic Bank and member of the College of DuPage Computer and Technologies Advisroy Board. Check then out!

HTS Heritag Technology Solutions:

Here is the link for our sales consultant position

http://www.hbspc.com/about/careers/tech-sales-consult.html



Here is the link for our network technician position

http://www.hbspc.com/about/careers/net-tech.html

Senior Software Engineer - Network/Application Security

Senior Software Eng- Network/Application Security
Full Time Senior Position - responsible for creating complex networking and network security products. Also required to lead and mentor junior engineers.

Responsible for designing and implementing Intrusion Prevention Systems (IPS) software, application security and application service components, resolving internal and external customer issues etc

Hands-on experience with Intrusion Prevention Systems (IPS)
- Some experience with firewall, VPN, ALG, NAT
- Broad knowledge on application layer protocols: HTTP, SMTP, TELNET, IMAP, etc.
- Extensive experience in Linux/freeBSD/netBSD operating sys
- Strong understanding of TCP/IP
- Extensive experience in C

Please email your resumes to sam.sharma@talenttrust.com.

Cisco PIX and Firewall Experience

Looking for someone with Cisco Pix and Fire wall experience.
They will be working on the Firewall Cleanup Project – which is an effort to clean up their infrastructure as over the years they have gotten out of alignment with standards. They now have defined rule sets, and they need people to get in and eliminate overlap and duplicates. Will be a very heads down role for the next two months, as there is a lot of work to do.

Required skills: 3-5 years Firewall experience, Cisco PIX – ASA (ASA is the newer version of PIX). They need to have experience with ACLs (Access Control List), Rule sets, Object groups, and Policy reviews. Also, experience with Firewall Service Modules (which are virtual firewalls). If your interested please contat me directly at marqscot@teksystems.

Cisco CCNA Training Instructor

Cisco Discovery 1 & 2 Training Instructor
APSI is looking to hire a Cisco Discovery 1 & 2 Training Instructor in Charlotte North Carolina. Individual must have Cisco "classroom" experience to be considered for this great opportunity.

Individual would be working with APSI's academic institutional partners and non-profit organizations to deliver the Cisco Discovery 1 & 2 courses. The selected professional will be working with APSI's CTO closely and local celebrity/NFL partners. Some travel may be required. For more information, please contact Jay Burns, CTO at 704-944-3528 or jburns@apsicorp.com Visit our website for more information on APSI and our Vocational Training Programs www.apsicorp.com

Cisco PIX and ASA Firewall

Looking for someone with Cisco Pix and Fire wall experience.
They will be working on the Firewall Cleanup Project – which is an effort to clean up their infrastructure as over the years they have gotten out of alignment with standards. They now have defined rule sets, and they need people to get in and eliminate overlap and duplicates. Will be a very heads down role for the next two months, as there is a lot of work to do.

Required skills: 3-5 years Firewall experience, Cisco PIX – ASA (ASA is the newer version of PIX). They need to have experience with ACLs (Access Control List), Rule sets, Object groups, and Policy reviews. Also, experience with Firewall Service Modules (which are virtual firewalls). If your interested please contat me directly at marqscot@teksystems.

RIP Timers

The invalid timer is used to limit the amount of time a route can stay in a routing table without being updated. RIP calls this the expiration timer, or timeout. Cisco’s IOS calls it the invalid timer. The invalid timer is set to 180 seconds whenever a new route is established and is reset to the initial value whenever an update is heard for that route. If an update for a route is not hard within that 180seconds (six update periods), the hop count for the route is changed to 16, marking the route as unreachable.

Another timer, the flush (garbage collection) timer, is set to 240 seconds – 60 seconds longer than the expiration time. The route will be advertised with the unreachable metric until the flush timer expires, at which time the route is removed from the routing table. When a route has been marked as unreachable, but has not yet been flushed, it will show the route in the routing table as,possibly down.

The third timer is the holddown timer. Although RFC1058 does not call for the use of holddown’s, Cisco’s implementation of RIP does use them. An update with a hop count higher than the metric recorded in the routing table will cause the route to go into hold-down for 180 seconds (again, six update periods).

This information comes from Jeff Doyle's Routing TCP/IP Volume I book which I highly recommend to you. Happy Reading!