Are We Really Getting the Giga-bit Performance?
Test Applications | Backhaul | Services over Ethernet and IP Networks.
The High-speed Ethernet-based networks links are widely found in the local area, the metropolitan area, and the wide area networks, as it provides a cost-effective and less complex Ethernet solution to aggregate and manage data between different networks. However, unlike the TDM based circuits, the performance of Ethernet-based networks cannot be evaluated based only on the bit-error-rate (BER) and loopback testing. To fully validate network performance of Ethernet / IP network, the network operators need to perform RFC 2544 tests, Stacked VLAN and MPLS tests, traffic emulation, and multi-stream testing.
Testing the voice, video, and data performance over the high-speed Ethernet links is extremely challenging and requires specialized test tools. GL offers test tools for testing high-speed Ethernet links of up to 10 Gbps which allow you to monitor, test, and troubleshoot performance issues.
GL's PacketExpert™ is a hardware based test instrument suited for the installation, troubleshooting, and comprehensive testing of Ethernet/IP networks. PacketExpert™ can be used as a comprehensive Ethernet-IP Tester and perform all the network validation tests over electrical and optical interfaces, or used as an advanced WAN Emulator by emulating a WAN (wide area network) link between two local networks to test end-point devices and applications.
PacketExpert™ WAN Emulator can emulate a single link per board with varying capacities from 10Mbps to 1 Gbps interfaces. Multiple emulation engines are possible with High-Density PacketExpert™ boards. Available in 4, 12, and 24 port versions.
GL's PacketCheck™ is a software based Ethernet / IP test tool with BERT, multi-stream, throughput, delay, impairments, traffic generation features. Like Packetexpert™, it can perform testing at all protocol layers - from raw Ethernet frames to VLAN, MPLS, IP, and UDP packets.
- Service-level agreement (SLA) validation
- Automated remote and testing
- Emulate network behaviour to test End-point devices such as routers, switches, and IP services
- QoS testing of Triple-play services
- Pinpoint the cause of application failure and validate solutions without disrupting the production network
- Validate network that suits your company requirements before deployment
- Evaluate performance of enterprise-level, and bandwidth-sensitive applications prior to deployment
- Test Audio, and Video quality on IP networks
- Estimate bandwidth and QoS requirements
Tests to verify the performance of an Ethernet / IP networks include the following -
PacketExpert™ supports Wire speed BERT(full duplex) on all the ports simultaneously over Layer1, Framed Ethernet (Layer2), Stacked MPLS (Layer2.5), Stacked VLAN (Q-in-Q), IP and UDP layers.
PacketExpert™ supports all RFC 2544 tests for the performance benchmarking of individual network elements. These include Throughput, Latency, Frame Loss, and Back-to-Back tests. Similar to BERT, RFC 2544 can be done over Framed Ethernet (Layer2), Stacked VLAN (Q-in-Q), Stacked MPLS, IP and UDP.
WAN Link Emulation for 1 Gbps and 10 Gbps (Single Stream)
GL's IPLinkSim™ and IPNetSim™ products support WAN emulation. These tools can operate in pass-through mode, and pass all frames across to the other port acting as a transparent bidirectional Ethernet link or a simple Ethernet bridge between 2 Ethernet end points. These products are capable of emulating a WAN link, and introducing typical WAN impairments like Bandwidth Throttling, Latency, Jitter, Packet Loss, Packet Reordering, Packet Duplication, Packet Corruption, Congestion emulation etc. Both the products act as a transparent Ethernet bridge and can be connected between two LANs easily emulating a WAN link in the lab.
Multi Stream IP WAN Emulator for 1 Gbps and 10 Gbps
IPNetSim™ emulates WAN conditions separately and independently on each direction (16 streams on 1 Gbps ports and 4 streams on 10 Gbps ports). ”Stream Definition” feature to classify the traffic on each port into separate streams. WAN Emulation includes various real world impairments such as Bandwidth, Latency, Packet-Loss, Error Insertion, Reordering, and Duplication, to check the performance of end equipment to real world impairments.
Wirespeed Ethernet Packet Capture and Playback
Wirespeed Capture and Playback testing is an optional application within PacketExpert™ 1G and 10G platforms. Record Playback module is a Wirespeed Ethernet Tap, which works as a High-Precision Wirespeed Traffic Generator in optical interfaces supporting up to 10Gb/s. It supports all the features of high-end taps in a portable unit providing Wirespeed Packet Capture, Filter, Drop (for real-time analysis) & Storage (for offline analysis) over both 10G and 1G ports.
PacketBroker – Passive Ethernet Tap
The PacketBroker is another optional application within PacketExpert™ 1G and 10G platforms, that allows the Ethernet test tool to be used as a highly precise non-intrusive Wirespeed Ethernet Tap with all the necessary features packaged within to capture real world traffic, define multiple filters for drilling-down to traffic of interest, generate triggers based on packet filters, both direction traffic aggregated on to a single port, modify packets to convey useful information like Timestamp, Filter number etc. inband and output filtered/aggregated/modified packets for deep-packet data analysis.
ExpertSAM™ (ITU-T Y.1564)
ExpertSAM™ multi-stream ITU-T Y.1564 standard compliant test is supported on PacketExpert™ 1G and 10G platforms. ExpertSAM™ is a single test conducted to validate SLAs as per ITU-T Y.1564 standard. The ITU-T Y.1564 is built around two key subtests, the Service Configuration Test and the Service Performance Test. ExpertSAM™ is a set of procedures that test the ability of Ethernet-based services to carry a variety of traffic (voice, data, and video) at defined performance levels.
High-Density Ethernet Network Testing (1 Gbps)
HD-PacketExpert™ offers higher densities from 12/24 Ethernet Ports form factor solution for testing GigE switches, routers and network conditions. The chassis comprises of both electrical and optical (fiber) interfaces.
Ethernet Multi-stream testing (1 Gbps)
GL's PacketCheck™ supports Ethernet multi-stream option to test Ethernet at all layers (VLAN, MPLS, IP, and UDP) with BERT, multi-stream, throughput, delay, impairments, traffic generation features. This allows the users to test a congested networks ability to transport high priority traffic rather than lower priority traffic to ensure good quality.