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  • Re: Is the Route/Switch still worth it?

    No second thoughts whatsoever. R&S will always be a foundation of just about everything else. SDN still builds on a foundation of R&S. Leaf/spine still builds on routing, and in some cases you've got to really know your routing stuff to know where you can reuse ASNs and link address space. Network maintenance requires good understanding
    Posted to CCIE Routing & Switching General (Forum) by peety on 03-27-2017
  • Re: Help with ping and subnets

    See the reply I made to your other post. Question 1 doesn't work, as the router won't accept that configuration. Question 2 suggests that you think classful addresses still matter; fact is, they don't. Decades ago, they did matter slightly, but it was really simple: Class A had a first octet of 0-127 or a first bit of 0, Class B had a first
    Posted to CCENT (Forum) by peety on 03-19-2017
  • Re: Ping and subnetting

    Your scenario isn't going to work. Your L3 switch won't allow you to put the same IP address, or even overlapping IP addresses, on two different interfaces, nor would it allow you to put two overlapping addresses/subnets onto the same interface with secondary addresses. As far as public IP addresses on the Internet, I think you're over-thinking
    Posted to CCENT (Forum) by peety on 03-19-2017
  • Re: unusual situation, BGP advertises route back

    [quote user="kajatonas"] I think it's not only cisco thing, because other vendor, like HUAWEI are doing the same. [/quote] They blatantly copy Cisco's code and hardware. Don't be surprised if "their" software behaves the same as Cisco IOS.
    Posted to CCIE Routing & Switching General (Forum) by peety on 03-03-2017
  • Re: unusual situation, BGP advertises route back

    I think this is normal behavior. It relies on the fact that BGP will ignore learned paths (by default) with its own ASN in the path, though you could override this with the allowas-in attribute on the neighbor/peer-group. I've seen this as useful behavior in a production environment, as ISPs tend to filter routes from customers aggressively. As
    Posted to CCIE Routing & Switching General (Forum) by peety on 02-27-2017
  • Re: BGP: Network Command vs Redistribute Static

    Redistribute only redistributes if the original route matches the specific protocol. Network matches any original protocol. That said, I'd argue that you ought to know where your routes are coming from and be able to redistribute as needed. Both will make the route look like BGP on other routers. Neither will make the route look like BGP on <this>
    Posted to CCIE Routing & Switching Technical (Forum) by peety on 02-01-2017
  • Re: BGP Best Path Selection vs IP Route

    [quote user="Martinl"] (received & used) versus received-only --- i think is due to bgp multipath feature. [/quote] Nope, it's due to soft-reconfiguration inbound being enabled. If enabled for a particular neighbor, the learned routes could have three different possible outcomes: (received & used) - means the prefix was not altered
    Posted to CCIE Routing & Switching Technical (Forum) by peety on 01-02-2017
  • Re: The CCNP Candidate's Guide to BGP with Travis Bonfigli

    [quote user="DanielGlenn"] This is the first time in 15 years since I first heard of BGP I really feel I've gotten it. (Ok, I never had to use BGP in production, and still don't, but now I really want to- which is another sign of an absolute fantastic instructor) [/quote] Glad you've found the magic of BGP. Somehow it became my
    Posted to CCNP (Forum) by peety on 12-27-2016
  • Re: Route-map upper limit

    Also, remember that on some platforms, BGP route maps can utilize the 'continue' operator. This allows you to match certain parameters and set certain parameters, then instead of exiting the route map in a "first match and done" basis, you jump forward (must be forward, cannot ba backward) to a particular clause. The set actions you've
    Posted to CCIE Routing & Switching General (Forum) by peety on 12-12-2016
  • Re: QoS Question

    [quote user="hurricane1091"] I would argue though that our 100+ branch sites all have T1s or 10 mbps MPLS circuits as their primary circuit, so there in that case there should never be a situation like the hypothetical 17 server one you produces. However, with that idea in mind, it does make sense why we would want the output policy on access
    Posted to CCIE Routing & Switching Technical (Forum) by peety on 12-08-2016
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