Plus it's the only one to do so with minimal delay and jitter. The MG8, which includes not only 10G Ethernet interfaces but also a new port Gigabit Ethernet blade, also demonstrated first-rate, quality-of-service QoS enforcement capabilities. How we did it. Foundry's MG8 features. Performance charts from our testing. Subscribe to the Product Review newsletter.
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Plus it's the only one to do so with minimal delay and jitter. The MG8, which includes not only 10G Ethernet interfaces but also a new port Gigabit Ethernet blade, also demonstrated first-rate, quality-of-service QoS enforcement capabilities.
How we did it. Foundry's MG8 features. Performance charts from our testing. Subscribe to the Product Review newsletter. However, while the MG8 lives up to its "Mucho Grande" moniker in terms of raw horsepower and traffic control, the late beta version Foundry supplied of its new port Gigabit Ethernet line card has a few performance kinks. More seriously, in our failover tests while the MG8 rerouted one flow very fast, recovery times might increase along with flow counts.
The vendor says a firmware upgrade due next month will improve performance on its port card. Late next month we plan to test the upgraded port card and the 40G chassis. Foundry's best results came during the pure 10G Ethernet tests. The MG8 also delivered line-rate performance in our basic backbone test. This configuration tests 10G Ethernet the way it's most likely to be used - as an aggregation technology for multiple Gigabit Ethernet links. However, results were less than perfect in tests of Foundry's port Gigabit Ethernet line card.
The late beta version we tested forwarded byte frames at line rate, but dropped and 1,byte frames in some tests. In our port full-mesh tests, the card delivered line-rate throughput with short frames, but throughput with byte frames was equivalent to In tests where the port Gigabit Ethernet card exchanged traffic with four 10G Ethernet interfaces - which demonstrates how the switch will perform as part of a 10G Ethernet backbone - the MG8 forwarded and byte frames at line rate.
Throughput for 1,byte frames fell to the equivalent of The MG8 put up impressive delay and jitter numbers, meaning delays will not affect application performance. In the pure 10G Ethernet tests, the MG8 introduced delay of between 6. However, because of a configuration error on our part, we threw 10 times as much traffic at Foundry's switch as Cisco's when measuring latency. Even under these conditions, the MG8 kept delay low and consistent. Jitter delay variation was a maximum of 2.
Within a single port blade, average delay ranged from 7. When moving traffic between the port blade and 10G Ethernet interfaces, delay ranged from 9.
Our failover tests measure the MG8's ability to move traffic onto a secondary link when a primary link fails. Because availability trumps performance for many network professionals, this was an important test.
Things began well enough. We measured failover of a single flow using three technologies, and in all cases the switch redirected traffic in 34 msec or less. That's better than Foundry's first-generation product, and slightly faster than single-flow numbers for Cisco's Catalyst However, single-flow measurements aren't terribly meaningful in an enterprise context, where huge numbers of flows might be involved.
We found that Cisco Catalyst failover times for 1 million flows were similar to those for one flow. We could not test the MG8 this way because it cannot hold a routing table with 1 million entries. That's hardly a fatal flaw given that routing tables even at large companies are more on the order of 1, entries. But we were unable to run our test even with 1, entries. The MG8's design requires a new entry in its Layer 2 forwarding table every time there's a change in a flow's Layer-3 routing information.
Because the MG8 cannot forward traffic without a table entry, failover time increases with the number of flows being failed over. In such situations, flow-based designs such as the MG8's will take longer to reroute traffic than devices that "prepopulate" the forwarding database as they learn routes. Our QoS tests assessed the MG8's ability to perform two types of prioritization at once. The MG8 met both QoS goals. Network World gratefully acknowledges the vendors who supported this project.
Thanks also to Siemon Co. Newman is president of Network Test, an independent benchmarking and network design consultancy in Westlake Village, Calif. He can be reached at dnewman networktest. Here are the latest Insider stories. More Insider Sign Out. Sign In Register. Sign Out Sign In Register. Latest Insider. Check out the latest Insider stories here. More from the IDG Network.
A true 10G Ethernet switch, but failover tests raise resiliency issues. Pros: 10G cards have line-rate throughput and low latency; excellent QoS enforcement. Con: Scalability issues with failover, port 1G cards are blocking.
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Foundry BigIron MG8
Free shipping. The BigIron MG8 is a terabit-capacity LAN switching and routing platform offering a new generation of high performance that offers multilayer solutions for. Have one to sell? For additional information, see the Global Shipping Program terms and conditions — opens in a new window or tab.
Foundry BigIron MG8 - switch - desktop Series Specs
Plus it does so with minimal delay and jitter. The MG8, which includes not only 10G Ethernet interfaces but also a new port Gigabit Ethernet blade, also demonstrated first-rate, quality-of-service QoS enforcement capabilities. Foundry's best results came during the pure 10G Ethernet tests. The four-port 10G Ethernet module handled small, midsize and large frames at full Gigabit line rate with zero loss. The MG8 also delivered line-rate performance in our basic backbone test. This configuration tests 10G Ethernet the way it's most likely to be used - as an aggregation technology for multiple Gigabit Ethernet links. However, results were less than perfect in tests of Foundry's port Gigabit Ethernet line card.
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