Forum Discussion
New Contributor10G/25G Ethernet vs 10G MAC + 10GBASE-R PHY
HI,
Pls see my comment below
1. For a new system is there any general recommendation on which IP to use, either the 25G Ethernet or a combination of LLE 10G MAC and 10GBASE-R PHY?
- Since you are just interested with 10G application then it make more sense for you to consider either
- LLE 10G MAC + 10GBASE-R PHY
- or LLE 10G MAC + 1G/2.5G/5G/10G Multi-rate Ethernet PHY
2. It doesn't seem like it, but is it possible configure the 25G Ethernet IP in such a way that it would start in, or only operate in, 10G mode ?
- Unlikely as this IP is meant for 25G application with additional option to downgrade to 10G. So, It will start with 25G
3. Is the main purpose of the 10G/25G rate switching (in the 25G Ethernet IP) to allow rate switching on the fly, or is this also intended to replace the 10G MAC + PHY and allow backwards compatibility with 10GbE systems ?
- The rate switching option allow on the fly speed change via the reconfiguration process change as shown in example design link
- https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-dex-s10-25gbe.pdf
- I won't say replacement but think of it like next generation Ethernet IP solution that able to support till 25G but at the same time still preserve backwards compatibility with 10GbE systems
Thanks.
Regards,
dlim
Regular ContributorHI,
Pls see my comment below
1. For a new system is there any general recommendation on which IP to use, either the 25G Ethernet or a combination of LLE 10G MAC and 10GBASE-R PHY?
- Since you are just interested with 10G application then it make more sense for you to consider either
- LLE 10G MAC + 10GBASE-R PHY
- or LLE 10G MAC + 1G/2.5G/5G/10G Multi-rate Ethernet PHY
2. It doesn't seem like it, but is it possible configure the 25G Ethernet IP in such a way that it would start in, or only operate in, 10G mode ?
- Unlikely as this IP is meant for 25G application with additional option to downgrade to 10G. So, It will start with 25G
3. Is the main purpose of the 10G/25G rate switching (in the 25G Ethernet IP) to allow rate switching on the fly, or is this also intended to replace the 10G MAC + PHY and allow backwards compatibility with 10GbE systems ?
- The rate switching option allow on the fly speed change via the reconfiguration process change as shown in example design link
- https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-dex-s10-25gbe.pdf
- I won't say replacement but think of it like next generation Ethernet IP solution that able to support till 25G but at the same time still preserve backwards compatibility with 10GbE systems
Thanks.
Regards,
dlim
- kgigliotti
Hi @Deshi_Intel,
Thanks for the response, and answering all of my questions, it's definitely appreciated.
Your responses are in-line with my initial assumptions, so I'm glad that my understanding was on the right track.
Does this also mean there would be no intention of discontinuing support for the LLE 10G MAC + 10GBASE-R PHY in the next 10 years? I understand that it is quite a while away, so it is very difficult to know for sure, but this will be fairly important for the project.
Cheers
