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Hz so good
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Re: Networking Glossary

Mon Oct 20, 2014 8:50 am

just brew it! wrote:
Hz so good wrote:
One other thing, most of the better switches use MDIX

AFAIK *all* gigabit switches do.



I've got an 8 port gigabit netgear switch, and it doesn't. That could easily be the exception to the rule, though.
 
Aphasia
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Re: Networking Glossary

Mon Oct 20, 2014 9:33 am

Hz so good wrote:
I forgot to mention that 40GigE is already in use, especially in aggregators in Windstream COs. 2 or 3 ports per line card.

And I'm unfamiliar with M-BGP. iBGP and eBGP, yes, but not mBGP. Can you provide me with some links, since I'm obviously ignorant about that particular protocol, and would love to learn more about it.

And isn't NX-OS linux based? I've only taken the one course on it, so I'd like to learn more about it, too. Dave Lammle has made his NX-OS simulator freely available, if anyone wants to tinker with it.

Well, iBGP or eBGP is basically only a nomenclature if you use BGP within an AS, interior, or between AS, exterior. mBGP/M-BGP/MBGP, (sometimes MP-BGP) is its own extension-set.
The term is probably used probably used quite interchangeable depending on where you are... but the point is that Multiprotocol BGP is what I'm after, as in, the multiprotocol extensions that allow for address-families to be exchanged within between two bgp peers without having to establish separate routing instances per vpn / vrf.

Basically, this is what we use it for, in conjunction with MPLS. The routing protocol itself is often also used to propagate multicast routes as well.
http://www.cisco.com/c/en/us/td/docs/io ... s-vpn.html
http://www.cisco.com/c/en/us/products/i ... index.html
http://www.cisco.com/c/en/us/tech/ip/mu ... index.html

NX-OS is also based on a Linux kernel as far as I know, but outside the datacenter I'm not so sure we will see that much of it. But that is where IOS-XE is supposed to be.
http://www.cisco.com/c/en/us/products/c ... 22903.html

Although currently it seems we have 4 different flavors of the OS.... IOS, IOS-XE, IOS-XR and NX-OS.
http://www.cisco.com/c/en/us/products/i ... index.html


Also, I'm not that hardcore on BGP myself, which is why I am on the implementation and operations side of it instead of the actual designing side of the new network, but the new guy in the group here comes from a big ISP/Service provider. He told me about a few interesting things though. Beyond GNS3/Dynamips there seems to be a decent effort going on to get something better out there. Probably similar to the IOU(IOS-on-Unix) that cisco uses as an internal tool, and IIRC, also power some online rentals you can get. What I don't get is why Cisco can't just release it themselves, because it would surely increase the learning of IOS.

http://evilrouters.net/2011/01/18/cisco-iou-faq/
http://myhowtosandprojects.blogspot.se/ ... ng_10.html
 
Hz so good
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Re: Networking Glossary

Mon Oct 20, 2014 9:53 am

Aphasia wrote:
Hz so good wrote:
I forgot to mention that 40GigE is already in use, especially in aggregators in Windstream COs. 2 or 3 ports per line card.

And I'm unfamiliar with M-BGP. iBGP and eBGP, yes, but not mBGP. Can you provide me with some links, since I'm obviously ignorant about that particular protocol, and would love to learn more about it.

And isn't NX-OS linux based? I've only taken the one course on it, so I'd like to learn more about it, too. Dave Lammle has made his NX-OS simulator freely available, if anyone wants to tinker with it.

Well, iBGP or eBGP is basically only a nomenclature if you use BGP within an AS, interior, or between AS, exterior. mBGP/M-BGP/MBGP, (sometimes MP-BGP) is its own extension-set.
The term is probably used probably used quite interchangeable depending on where you are... but the point is that Multiprotocol BGP is what I'm after, as in, the multiprotocol extensions that allow for address-families to be exchanged within between two bgp peers without having to establish separate routing instances per vpn / vrf.

Basically, this is what we use it for, in conjunction with MPLS. The routing protocol itself is often also used to propagate multicast routes as well.
http://www.cisco.com/c/en/us/td/docs/io ... s-vpn.html
http://www.cisco.com/c/en/us/products/i ... index.html
http://www.cisco.com/c/en/us/tech/ip/mu ... index.html

NX-OS is also based on a Linux kernel as far as I know, but outside the datacenter I'm not so sure we will see that much of it. But that is where IOS-XE is supposed to be.
http://www.cisco.com/c/en/us/products/c ... 22903.html

Although currently it seems we have 4 different flavors of the OS.... IOS, IOS-XE, IOS-XR and NX-OS.
http://www.cisco.com/c/en/us/products/i ... index.html


Also, I'm not that hardcore on BGP myself, which is why I am on the implementation and operations side of it instead of the actual designing side of the new network, but the new guy in the group here comes from a big ISP/Service provider. He told me about a few interesting things though. Beyond GNS3/Dynamips there seems to be a decent effort going on to get something better out there. Probably similar to the IOU(IOS-on-Unix) that cisco uses as an internal tool, and IIRC, also power some online rentals you can get. What I don't get is why Cisco can't just release it themselves, because it would surely increase the learning of IOS.

http://evilrouters.net/2011/01/18/cisco-iou-faq/
http://myhowtosandprojects.blogspot.se/ ... ng_10.html


Oh, OK! Cool beans! Thanks for the links! I've yet to try IOU, since it's supposed to be super secret (at least, according to Jeremy Cioara). He did mention that ASA is another flavor, since if a security hole is found in it, Cisco doesn't want it associated with IOS/NX-OS/IOS-XE.

I do like NX-OS personally (well, what little I've been exposed to it).
 
Glorious
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Re: Networking Glossary

Mon Oct 20, 2014 10:29 am

Hz so good wrote:
I've got an 8 port gigabit netgear switch, and it doesn't. That could easily be the exception to the rule, though.


It is an optional part of the protocol, but like JBI I've neither heard of nor seen any equipment that failed to include it.
 
Aphasia
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Re: Networking Glossary

Mon Oct 20, 2014 12:55 pm

It's gonna be fun to finally get some true hand's with NX-OS on implementing the new core, I've only had cursory glances at it so far and used it in troubleshooting, this time its building a new core, including FAT / SAT testing failovers and veryfying in-place upgrades and the whole shebang so...

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