AeroLeads people directory · profile

Bill Fenner Email & Phone Number

Member of Technical Staff at Arista Networks, Inc. at Arista Networks
Location: Phoenixville, Pennsylvania, United States 6 work roles 1 school
2 work emails found @arista.com LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails

Work email b****@arista.com
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Arista Networks
Role
Member of Technical Staff at Arista Networks, Inc.
Location
Phoenixville, Pennsylvania, United States
Company size
1054 employees

Who is Bill Fenner? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Bill Fenner is listed as Member of Technical Staff at Arista Networks, Inc. at Arista Networks, a with 1054 employees, based in Phoenixville, Pennsylvania, United States. AeroLeads shows a work email signal at arista.com and a matched LinkedIn profile for Bill Fenner.

Bill Fenner previously worked as Member of Technical Staff at Arista Networks and Principal Member of Technical Staff at At&T Labs - Research. Bill Fenner studied at Penn State University.

Company email context

Email format at Arista Networks

This section adds company-level context without repeating Bill Fenner's masked contact details.

{first_initial}{last}@arista.com
92% confidence

AeroLeads found 2 current-domain work email signals for Bill Fenner. Compare company email patterns before reaching out.

View email format View company profile Management contacts
Profile bio

About Bill Fenner

I've been fascinated by networking ever since I started using the Internet in 1989. At heart, I'm a generalist, from UNIX system administrator to protocol junkie, no matter the layer -- be it SMTP, HTTP, Atom, BGP, ARP, ...I'm also fascinated by network monitoring. Ever since the first time I ran tcpdump, I knew that the network is *not* doing what you think it's doing. IP is so incredibly robust it will work despite massive problems, which users may not even notice. Being able to proactively find these "invisible" problems is an ongoing quest.I've been active in the Internet Engineering Task Force since 1993. I co-chaired the idmr and magma working groups, and was Routing Area director from 2002-2007. I also work on the tools team and help liaise with IANA and the RFC Editor.I've authored the following RFCs:2236 Internet Group Management Protocol, Version 2.2435 RTP Payload Format for JPEG-compressed Video.2525 Known TCP Implementation Problems.2710 Multicast Listener Discovery (MLD) for IPv6.2934 Protocol Independent Multicast MIB for IPv4.3228 IANA Considerations for IPv4 Internet Group Management Protocol (IGMP).3376 Internet Group Management Protocol, Version 3.3618 Multicast Source Discovery Protocol (MSDP).3678 Socket Interface Extensions for Multicast Source Filters.4113 Management Information Base for the User Datagram Protocol (UDP).4601 Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised).4605 Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD)-Based Multicast Forwarding ("IGMP/MLD Proxying").4624 Multicast Source Discovery Protocol (MSDP) MIB.4727 Experimental Values In IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers.4794 RFC 1264 Is Obsolete.4940 IANA Considerations for OSPF.I co-authored an update of Richard Stevens' classic, "UNIX Network Programming, Volume 1, 3rd Edition" in 2003.Specialties: Protocol design, Protocol implementation, Network diagnostics

Listed skills include Mobility.

Current workplace

Bill Fenner's current company

Company context helps verify the profile and gives searchers a useful next step.

Arista Networks
Arista Networks
Member of Technical Staff at Arista Networks, Inc.
santa clara, california, united states
Website
arista.com
Employees
1054
AeroLeads page
Company profile
View company profile Email format
6 roles · 34 years

Bill Fenner work experience

A career timeline built from the work history available for this profile.

Routing Area Director

Ietf

I spent 5 years as part of the Internet Engineering Steering Group (IESG) - the management organization for the IETF. While there, I focused on improving communication between the IESG and Working Groups via tools and procedures.I heartily believe that the IESG role is one that, due to the incessant demands, can burn out even the best of person. I declined to stand for re-nomination in 2006-2007 because I realized that I had lost the WG-Chair viewpoint that I wanted to bring to the IESG and had become, to some extent, just another part of the machine.

2002 - Mar 2007

Member Of Research Staff

Xerox Parc

Maintained mrouted and the MBone; helped document IGMPv2, design PIM and IGMPv3.

Jul 1995 - Feb 1999

Network Researcher

Itt
1993 - 1995 ~2 yrs
Team & coworkers

Colleagues at Arista Networks

Other employees you can reach at arista.com. View company contacts for 1054 employees →

KT Ken Trinh Ken Trinh Colleague at Arista NetworksGilroy, California, United States View → KR Kushagra Rathore Kushagra Rathore Colleague at Arista NetworksKorba, Chhattisgarh, India View → AP Atharva Puranik Atharva Puranik Colleague at Arista NetworksPune, Maharashtra, India View → KP Kishor Parvatikar Kishor Parvatikar Colleague at Arista NetworksBijapur, Karnataka, India View → NN Nirupama Nag Patil Nirupama Nag Patil Colleague at Arista NetworksBengaluru, Karnataka, India View → MR Md Riajul Islam Md Riajul Islam Colleague at Arista NetworksPabna Sadar Upazila, Rajshahi, Bangladesh View → JS John Schimmel John Schimmel Colleague at Arista NetworksRoyse City, Texas, United States View → JC Judie Chum Judie Chum Colleague at Arista NetworksSan Francisco Bay Area, United States View → AG Ashish Goyal Ashish Goyal Colleague at Arista NetworksBengaluru, Karnataka, India View → SN Sumeet Naik Sumeet Naik Colleague at Arista NetworksPune, Maharashtra, India View →
1 education record

Bill Fenner education

FAQ

Frequently asked questions about Bill Fenner

Quick answers generated from the profile data available on this page.

What company does Bill Fenner work for?

Bill Fenner works for Arista Networks.

What is Bill Fenner's role at Arista Networks?

Bill Fenner is listed as Member of Technical Staff at Arista Networks, Inc. at Arista Networks.

What is Bill Fenner's email address?

AeroLeads has found 2 work email signals at @arista.com for Bill Fenner at Arista Networks.

Where is Bill Fenner based?

Bill Fenner is based in Phoenixville, Pennsylvania, United States while working with Arista Networks.

What companies has Bill Fenner worked for?

Bill Fenner has worked for Arista Networks, At&T Labs - Research, Ietf, The Freebsd Project, and Xerox Parc.

Who are Bill Fenner's colleagues at Arista Networks?

Bill Fenner's colleagues at Arista Networks include Ken Trinh, Kushagra Rathore, Atharva Puranik, Kishor Parvatikar, and Nirupama Nag Patil.

How can I contact Bill Fenner?

You can use AeroLeads to view verified contact signals for Bill Fenner at Arista Networks, including work email, phone, and LinkedIn data when available.

What schools did Bill Fenner attend?

Bill Fenner studied at Penn State University.

What skills is Bill Fenner known for?

Bill Fenner is listed with skills including Mobility.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.

People with similar names

Check these profiles if this is not the Bill Fenner you were looking for.

Bill Fenner
Bill Fenner
Senior Housing Professional
Bellevue, Wa
2 email domains
Bill Fenner
Bill Fenner
It Manager For All North Texas Probe/Bump Sites At Texas Instruments Inc.
Plano, Tx
1 email domain
Bill Fenner
Bill Fenner
Attorney Advisor At Tsa Office Of Chief Counsel
San Rafael, Ca
1 email domain
View similar profiles