Hi everyone, Is this correct? Internal Border Node = MS/MR / PITR External Border Node = PETR.
@paulodecimo54366 күн бұрын
In the Campus design, how connections between the Distribution switches in each building and the Core switches (are they switches or routers?) work? By routed interfaces? L3 Etherchannels?
@KishSquared5 күн бұрын
@@paulodecimo5436 The links will be L3 back to the core (usually these are multilayer switches). You can use Etherchannels but there isn't really an advantage to using them over flow-based ECMP. Hope that helps!
@paulodecimo54365 күн бұрын
@@KishSquared Hi, helped a lot, thank you. Please keep going with this study group. At the CBT nuggets classes you're kinda at the job and here its like you're just chilling with your boys talking about networking 🤣🤣🤣
@nicktucker343716 күн бұрын
33:00 RFC791 does not support your statement of always being 0, in your drawing that is bit 5, in RFC791 page 12 bit 5 is Bits 5: 0 = Normal Reliability, 1 = High Reliability. isn't it? No requirement for it to be 0 is mentioned. It is bits 6 & 7 that are set to 0 because they were reserved for future use.
@nicktucker343728 күн бұрын
1:02:15 Do you suppose the private cloud inside a hybrid cloud MUST or SHOULD(in RFC terms) confirm to the 5 NIST while inside a hybrid?
@nicktucker343728 күн бұрын
52:00 wouldn't chargeback be cool if we could charge it per packet and bytes per department. But yes, bank in the day IT in my region bank was its own cost center and only spent money, it didn't make any--but what is the value of enabling every single department in an org?
@nicktucker343729 күн бұрын
1:31:00 back in the mid90s I worked at a regional bank and we were running RIP v1 & Novell Netware, funny now.. but it worked fine for their needs.
@nicktucker3437Ай бұрын
14:38 Yes but the real panic attack was the Internet connection was 128k ISDN so it was slow for everyone.
@nicktucker3437Ай бұрын
32:48 too bad no RIP v2 or ODR eh? 47:59 Explaining inverseARP was difficult the first time I had to explain it.
@nicktucker3437Ай бұрын
56:48 realistically the Internet could possibly live off of the other border node in this scenario I'd think.
@nicktucker3437Ай бұрын
9:00 this is exactly the type of network I saw in so many places back in the day, especially a regional bank...separate physical servers for NT 4.0 AD, DNS, WINS, and God knows how many Netware servers they had. Sounds crazy today, but it worked.
@nicktucker3437Ай бұрын
45:45 CBWFQ/DSCP/NBAR is granular enough to configure such things without much trouble 48:30 Fram Relay pvcs should be much cheaper than MPLS circuits I'd think.
@nicktucker3437Ай бұрын
13:58 it used to be static routes that were banned on the CCIE Lab.
@KishSquaredАй бұрын
It's both! At least when I took it back in the day 😁
@nicktucker3437Ай бұрын
my lab attempt in 2001(when it was 2 day thing and you cabled the network yourself, also still had ISDN..later token ring switches and you were not allowed to touch any hardware... I think Appletalk and IPX was still on the lab then) only said no static routes were permitted unless there was a specific use case in your lab question. Do not remember anything about no tunnels allowed
@nicktucker3437Ай бұрын
2:41 The line I remember was if you cant fix the problem; fix the blame.
@AmrAbdelbariАй бұрын
i'm enjoying megaman's helmet XD
@leniotsiouАй бұрын
This is great material, thank you! Studying for DCID/ DCCOR and there are very few videos out there designed for DCID/ DCCOR. Any ideas of a free platform for more vids on those exams? I know CBT Nuggets is top of the top, but was wondering if there is anything freely accessible you may know about? Cheers :)
@fasttrack3410Ай бұрын
Where does firewalls fit into sdn or sd access fabrics?
@KishSquaredАй бұрын
Campus firewalling is performed by ISE integration. Firewalls would still exist at the Internet/DC boundaries, which is just part of the L3 routed network. Hope that helps!
@madoalfarsi29302 ай бұрын
Hi Kish. Thanks for the videos. How can we find a Lab where we can see VXLAN and LISP actually running. I am kind of Visual. I understand things when I see them. Thank you so much
@arturpopielski70512 ай бұрын
I guess he never came back :(
@siddheshshirsat2922 ай бұрын
This is very helpful in understanding SDA.. need similar video series for Cisco ACI.
@jorgegarciamex2 ай бұрын
awesome material!.. thank you!
@jalalhaider833 ай бұрын
25:33 when you talk about collapsing, what do you mean by that when you say core/distribution collapse to one what does that mean just a distribution switch only or what? I mean core is basically routing, which layer 3 switch aka distribution can also do? Looking forward to hear from you, thanks
@KishSquared3 ай бұрын
Distribution and Core essentially equate to different functions, where Distribution is SVIs and L2 connection to Access, while Core is L3 connection to other network locations. When you collapse to one, you have a single switch pair doing all of the above. I hope that helps!
@Ghitanov3 ай бұрын
@19:20 😄😄😄
@rohannandargi27033 ай бұрын
LISP reduces routing table size in ISP field by searching R10 ( in our example) not subnet A attached to it. but to reach R10 loopback or /30 prefixes all in-path routers must know the path thus routes. how LISP reduce routing table size?
@rohannandargi27033 ай бұрын
great session !
@whummer984 ай бұрын
With SPBm (also was available in 2020 and many years before 2020), you can have both and have redundancy and no loops. Cisco's concept forces L2 on top of L3 (greater overhead). SPBm integrates shortest path (think OSPF) with L2 invisibly. Then you can use that L2 anywhere you want it to show in the network. If you want VRFs, you can have that too (multi-tenant L2 and L3 are available for millions of tenants). Best part of it is that there are vendors now that have their own implementations and they interoperate (think open standard fabric) and not locked into one (Cisco).
@amer_sdeq4 ай бұрын
Great well done
@rembautimes88084 ай бұрын
Absolutely loved the video and I was glued to it from halfway across the world! There was one point which contrasted technical expertise vs communication skills. Realistically, the world is such that those who are more adept at communicating who can speak the language of business usually progress at the expense of those who are technically expert. But speaking from a risk management perspective, I would 100% rather have the network guy in my company be the best technical expert, whose word is law, rather than someone who goes with the flow. And in a highly regulated environment like financial services, regulators have the back of the technical expert. So if there was a meeting and a technical expert says , “no you need to do this in A and B and C”, and he has the necessary street credibility, very few committee members will dare overrule him. And he will also have the backing of risk, who has a powerful voice.
@mattmcg37604 ай бұрын
Mr Kish - Applying theory to real world scenarios like a boss!
@OnBelayClimbOn4 ай бұрын
Quick question ... how effective is SDA with using ISE?
@KishSquared4 ай бұрын
Overall ISE is meant to be a part of SDA, so it should be well integrated. If you're looking for details/examples then I would reach out to your Cisco team. Hope that helps!
@benjaminmusasizi37775 ай бұрын
Thanks Kish
@dmitry38765 ай бұрын
What the router would do if there are many PxTRs and it gets a negative reply from MS/MR? Which PxTR he would choose to send a packet? It could be a lot of them, and they could lead to different AS, which leads to suboptimal routing. What's the trick?
@christiankunze32746 ай бұрын
Hi, What kind of drawing tool is this?
@KishSquared6 ай бұрын
I use a Wacom Cintiq 22. It's getting a bit old, but it has held up well over the years!
@areebabbas26337 ай бұрын
So we need tunnel to every ETR/ITR ? If MS don't have route then the router will sent packet to PETR, but how router get to know about appropriate PXTR??
@TheONEHD17627 ай бұрын
Thats really amazing
@webnovice20127 ай бұрын
Poor video
@YLprime7 ай бұрын
I don’t understand why we will need FHRP on L3 access switch. Everyone wants to explain? Thanks
@KishSquared7 ай бұрын
Usually there are still multiple access layer switches per closet in an L3 Access design. Since the gateway address now lives at this layer, you would want redundancy among the access switches. Granted, if you are isolating a set of hosts to a single access switch/chassis/stack, then there's no need for an FHRP since it's a single device. I hope this helps!
@YLprime7 ай бұрын
Interesting! thanks!
@rorytribbet64247 ай бұрын
If user data, updates, and config are all passed from wlc to AP using capwap… why is the AP even connected to a switch port in the first place? What data is being passed along? Is there very specific types of managment data, is it for very specific scenarios? Would love to hear anyone’s knowledge on this
@KishSquared7 ай бұрын
The switch provides a network connection and in most cases provides power to the AP via PoE. In massively scaled networks, you might be looking at thousands of access points, and so the APs can't all connect directly to the controller. I hope that helps! Let me know if you have further questions.
@claudiuargeseanu19528 ай бұрын
Hi, Kish, really good videos. I was wondering if you could help me with this: In Ciscopress' ENCOR guide, LISP routing architecture is explained as follows: "In traditional routing architectures, an endpoint IP address represents the endpoint’s identity and location. If the location of the endpoint changes, its IP address also changes. LISP separates IP addresses into endpoint identifiers (EIDs) and routing locators (RLOCs). This way, endpoints can roam from site to site, and the only thing that changes is their RLOC; the EID remains the same." I don't understand this. Assuming that in this context EID = Endpoint IP Address, how can the EID not change if the client roams from one RLOC to another? How can I client keep its IP if it moves from one subnet to another?
@setsers18 ай бұрын
It's been 5 years. Thank you for the Memories.♥️
@DevinPlayzYT20078 ай бұрын
0:21 Quick Mans vs. Metal Mans
@BuzzNation698 ай бұрын
Google said something around 915k at the time i viewed this video! thanks for the video as well :)
@rudyjelen15349 ай бұрын
Thank you very much for this really great explanation. I have a question: what if our LISP domain is very large and is connected via different routers to other various non-LISP domains thru different routers ? This would mean that we essentialy would end with a lot of "defaoult" routes. MS/MR servers should help here I guess.
@kappi48829 ай бұрын
Thank you! Very well explained.
@drmanhattan2259 ай бұрын
Great lesson Jeff. Thank you
@roybrooks26849 ай бұрын
Kish. You have so much deep understanding regarding how overlay and underlay technology works. I believe this is what SD in about
@YLprime9 ай бұрын
I like the way you talk about things. lost of real world scenarios very helpful for students like me. I have always been trying to figure out why SDN is so much more superior, this video real convinced me on that very argument
@ciscoland87219 ай бұрын
Way better than Cisco’s “training “
@CertsAndTech9 ай бұрын
hey Jeff what are you up to recently?
@drmanhattan2259 ай бұрын
Jeff -you have a great way of breaking down concepts. Thank you man.
@christopherdekonstrukt4449 ай бұрын
Had an overview studying for the 301 exam which I passed Friday. Moving onto 350-401 Encore exam. Creates a mapping between VXLAN and underlay IP addresses.