Click to Learn About 1000BASE-X Connectivity Issues
The Problem
Gigabit Ethernet over optical fiber, also generally called 1000BASE-X, has been around for quite some time with the IEEE specification ratified under 802.3z. The 1000BASE-X standard also includes an Auto- Negotiation operation as defined in IEEE 802.3 Clause 37.
Clause 37 describes the 1000BASE-X Auto Negotiation function that allows a device to advertise the modes and speeds of operation that it supports to a device at the remote end of a link segment (the link partner) and to detect corresponding operational modes that the link partner advertises.
A similar Auto-Negotiation function has been defined for Ethernet over copper media (BASE-T rates) where it is mostly well understood and has been widely deployed with much success. However, the same cannot be said when it comes to the 1000BASE-X optical rates as the interpretation of the standard is widely varied. This varied interpretation can potentially cause connectivity issues on devices supporting 1000BASE-X and often results in devices not linking up with each other.
Learn About Measuring One-way Network Latency
How to Identify the Problem
Network latency plays a fundamental and direct role in the degradation of end-user network application performance. This is especially true for audio and video delivery, bandwidth-sensitive mobile applications, cloud computing, and storage services applications. The deployment of complex security devices also contributes to the latency problem. While these devices are critical to protecting our networks, how are they impacting your network performance?
Operations and security teams need complete traffic visibility to garner insights of all the devices contributing to slower network performance. Aukua Systems and Garland Technology have developed a solution to gain complete packet-level visibility and precisely measure one-way latency between two points for every network application.
TAP -> TOOL
Network TAP Benefits
- Provide complete packet visibility with full-duplex copies of network traffic.
- Ensure no dropped packets while passing physical errors and support jumbo frames without delay or altering the data.
- Support speeds from 10/100M, 1G, 10G, 40G, 100G, and 400G are available in single-mode and multi-mode fiber or copper ethernet.
- Available in Tap ‘Breakout,’ aggregation, regeneration, bypass, and advanced filtering.
- Passive or failsafe – Does not affect the network.
- No IP address or MAC address, and cannot be hacked.
PCS Layer Visibility
- How PCS layer visibility works
- Full PDF Solution Brief
-
Taking in optical signals from both devices under test (DUT), Garland Technology network TAPs reliably provide complete link visibility including the lower layers from both devices on either side.
-
The optical signals from both DUT’s is delivered passively to the Aukua MGA2510 Layer 1 PCS Capture for analysis.
-
Using the Aukua Layer 1 PCS Capture features, low-level data (for example, the Auto-Negotiation Pages that are exchanged) can be captured and then the symbols or control blocks can be analyzed for configuration and interoperability issues on the DUTs.
Above is a sample output of the Aukua MGA2510 Inline Analyzer with Layer 1 PCS Capture enabled showing the IEEE Clause 37 Auto-Negotiation Base Page capture.
The encoding of the ordered sets can be viewed easily via the Layer 1 PCS capture viewer built into the Aukua’s web browser-based user interface.
Network Latency Bottlenecks
- How to Resolve Network Latency Bottlenecks
- Full PDF Solution Brief
-
Taking in packets from both on premise and hybrid cloud environments, Garland Technology network TAPs reliably
provide complete packet-level traffic from each point of the network. -
The traffic is delivered passively to the Aukua MGA2510 Latency Monitor Analyzer for analysis.