Retiring IETF veteran warns: Stop adding so many damn protocols

Ross Callon provides departing KISS (keep it simple, stupid)


A retiring veteran of the Internet Engineering Task Force (IETF) has left the organization with a departing piece of advice: stop creating so many protocols.

Ross Callon was one of just 21 engineers who attended the first IETF meeting in San Diego in 1986 and has missed only a handful of the 95 subsequent meetings it has held in the intervening 30 years.

He took the opportunity of his retirement at the recent IETF meeting in Berlin to give a speech to attendees entitled "Keep it Simple. The Cost of (too many) Standards."

His main point: the IETF is developing too many protocols that basically do the same thing. As a result, the open standards body is creating unnecessary complexity and confusion and could undermine its biggest goal: an interoperable internet.

"While diversity in approaches is inevitable and valuable, too many options damages interoperability," Callon observed according to a write-up of the talk in the IETF's most recent newsletter. "We have to be a little concerned about creating too many options because some vendors implement some, while some vendors implement others, and suddenly we don't have interoperability."

A good example is VPNs. You can encapsulate comms for a VPN in one or two ways: with or without connections. But from there the options keep growing.

With connections... "There are three ways to signal your labels: Label Distribution Protocol, Resource Reservation Protocol, and Border Gateway Protocol. And there are some subtle differences when you get a label. Defined Operations and Management protocols (such as Label Switched Paths, Ping, and Bidirectional Forwarding Detection) are ways to manage things and measure performance," Callon said.

And without connections... "You can take an Internet Protocol (IP) packet and encapsulate it in an IP header. There are four options just for that: IPv4 in IPv4, IPv4 in IPv6, IPv6 in IPv4, and IPv6 in IPv6. Given all those options, it's hard to get one of them implemented and deployed everywhere."

Taken together there are between 20 and 40 different ways to do comms encapsulation – something that Callon notes are never all going to be added to one integrated circuit. "You run the risk that in some places in the world one gets implemented, and then somewhere else another gets implemented. You can end up with a loss of interoperability."

History

As any internet engineer will be able to tell you, the staggering success and expansion of the internet has in large part been possible thanks to the ability of many different companies to create a huge array of products that can all work with one another by following agreed protocols.

Callon argued that we might not have seen the internet we have today if there had been such an overwhelming number of approaches. "It wouldn't have happened if we had not had choices to do something, but it also wouldn't have happened if we had 20 or 30 ways to do something."

In many respects, the open process of developing the right number of protocols has been the IETF life's work. It is why the organization remains in existence, even if it has become a diminished force in recent years due to the industry increasingly going down its own paths.

"The IETF needs to find a way to avoid frivolous standards," Callon argued. "It is to the advantage of all of our companies and all of our research organizations and all of our government agencies that the Internet continues to grow. I'm asking everybody to think about this when a Working Group is considering a protocol: Is it really needed or can we use an existing tool?"

Callon's remarks were focused on routing but, he argued, the same arguments can be applied across all the IETF's work.

Moving forward

Of course, the IETF has always dealt with multiple proposed protocols for the same task, although it could be argued that in the past the organization was a little better at boiling them down. For example there were five different proposals for chat protocols, but ultimately Jabber won out.

There has also been persistent tension between the IETF's open protocols and the proprietary efforts pushed by particular companies. In the ongoing tug-of-war between corporate interests and interoperability goals, the industry approach has often won in recent years, perhaps putting pressure on the IETF to be more flexible on approving new protocols as a way of staying relevant.

Callon's concerns have also been well heard for a number of years by those leading the organization. Current chair Jari Arkko recently made a big push for the IETF to concern itself with the flooded landscape that is the internet of things. "I cannot think of a better example where interoperability is important than the Internet of Things. Without interoperability, lights won't work with the switches, sensors can't be read by your smartphone, and devices cannot use the networks around them," he noted in a blog post.

If there is one area where the IETF may be able to assume its traditional role, it is in this diverse market – pretty much everyone agrees they need a few standard protocols to create a foundation on which everyone can build.

Despite some recent signs that the industry is starting to coalesce around fewer IoT standards, it is still a mess and the IETF thinks it may be able to bring to bear its decades of experience working on open protocols to broker a set of solutions.

In that sense, Callon's word of warning while exiting the building is especially relevant and timely. With luck, current IETF attendees will listen to some words of wisdom from one of those few who was there when it all began. ®


Other stories you might like

  • Thunderbird 102 gets a major facelift, Matrix chat support
    Mozilla's messaging client appears to have benefited from sponsor shakeup

    Open-source cross-platform email and messaging client Thunderbird has hit version 102, with a new look and improved functionality, including Matrix chat support.

    The latest release is the first major upgrade since version 91, which The Reg looked at last August. This is normal for the app – it follows the same approximately annual release cycle as Firefox's Extended Support Releases, the most recent of which was also version 91. From now until the next major release, Thunderbird 102 will get a regular stream of minor updates and bug fixes.

    102 has a modernized look and feel. There's a new "Spaces" toolbar, which appears vertically on the left of the app window and lets users quickly flip between inbox, address book, calendar, task list, and chat tabs. All of these are built-in features – the former Lightning calendar add-on is now an integral part of the app, as is PGP support, which used to be an add-on called Enigmail. Thunderbird can talk to various groupware calendar and contact servers, including both private and corporate Google Mail accounts, Microsoft Exchange and Office 365, and others.

    Continue reading
  • UK govt promises to sink billions into electronic health records for England
    NHS App role expanded following perceived COVID-era success

    The UK's National Health Service (NHS) has committed to implementing electronic health records for all hospitals and community practices by 2025, backed by £2 billion (c $2.4 billion) in funding.

    The investment from one of the world's largest healthcare providers follows Oracle founder Larry Ellison's promise to create "unified national health records" in the US after the company paid $28.3 billion for Cerner, an American health software company also at the heart of many NHS record systems.

    In the UK, health secretary Sajid Javid has promised £2 billion to digitize the NHS in England, including electronic health records in all NHS trusts (hospitals or other healthcare providers) by March 2025.

    Continue reading
  • China says it has photographed all of Mars from orbit
    Enjoy the slideshow from Tianwen's orbital adventures

    China is claiming that as of Wednesday, its Tianwen-1 Mars orbiter has officially photographed the entire Red Planet. And it's shown off new photos of the southern polar cap and a volcano to prove it.

    "It has acquired the medium-resolution image data covering the whole globe of Mars, with all of its scientific payloads realizing a global survey," state-sponsored media quoted the China National Space Administration (CNSA) announcing.

    Among the images are one of Mount Askra with its crater, shots of the South Pole whose ice sheet is believed to consist of solid carbon dioxide and ice, the seven-kilometer deep Valles Marineris canyon, and the geomorphological characteristics of the rim of the Mund crater.

    Continue reading

Biting the hand that feeds IT © 1998–2022