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Hi All,For a requirement I had, I wanted to test various regex combinations of AS-PATH Prepend matches using IOSXR RPL. In case, someone else also has a similar situation, I thought of sharing the results.Iosxr regex syntax: ([0-9]+)(_\1)(_\1)(_\1)$...
Hi All,I am trying out the BGP add-path selection mechanisms given on the following Cisco page: - https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/217097-bgp-path-selection-in-ios-xr.htmlI have deployed the given topology wit...
Hello,I am studying for Cisco SP VPN certification and am a bit confused while going through the Ethernet OAM and CFM topics.CFM topic refers to the following terms without giving any explanation on what they are:- Relay function side- Wire sideI eve...
Hello, I am testing InterAS option-C setup in eveNG lab using Cisco IOSXRv running code 6.1.3. As part of the required configuration I am placing static routes on both the IOSXRv devices for each other, pointing out the connected interface. On one of...
Hi All, I am interested in gaining some skills around Hyper-Scaled DC designs and implementations. Usually, in order to being with something new, one of the paths taken is relevant certifications. I am not sure if there are any Cisco or vendor neutr...
Hi,I was asked a question that with ADD-Path on the client and without iBGP multi-path will the client show and install multiple paths. The answer is no. In order to have multiple iBGP multiple paths, multi-path functionality needs to be enabled on ...
Hi M02@rt37,Thanks a lot for your response. It makes a lot of sense. I tested it and as you have explained, if any of the BGP path-attributes are manipulated, the BGP Path Determination algorithm overrides the multi-path selection mechanism and selec...
Hi All,I tried all the combinations given in the following Cisco document for ADD-PATH Selection and am sharing the results for those in similar situation. Couple of the options were not available due to the code I had. It was tried on eveNG communit...
Hi Harold, As you suggested it works fine if I do not specify the next-hop IP address. However, what I find confusing is that there is another IOS-XR running the same code and there the format of static route, with a next-hop IP address works fine. S...
Hi Paul, I cannot share the actual topology due to the nature of information. However, I can give you some idea on what it looks like: 1) Edge hosting (customers) fall onto aggregations devices.2) Entire DC falls onto core devices.3) There are respec...
