if you looking to setp ELK Stack : could of reference :   https://www.neteye-blog.com/2017/10/sending-cisco-syslogs-to-elasticsearch-a-simple-guide/ https://blogs.cisco.com/security/step-by-step-setup-of-elk-for-netflow-analytics ... View more

Not sure what you looking here :   hope below URL help you configuring CSR   https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/esm/configuration/xe-16/esm-xe-16-book.html ... View more

take example : cat6K, each chasis has single supervisor, they are in VSS , chasis 1 supervisor fails - Second chasis sup will take over, there is no data plane traffic expect to fail.(risk is single supervisor running for now until failed one replaced) - depends on criticality of the business choose how many supervisor required.   Cat9500 different, its simple stack wise virtual. Cat 96XX  / Cat 9400 is modular can work same theory.   ... View more

yes that is way move forward, another same kind like GNS3, there eve-ng with muti vendor for PoC and Labs ... View more

 What is the difference in these releases ?   difference you can read release notes, most of the 5 Star rated one is good for production deployment, untiul you have any major bug and cisco fixed it upgrade to mainenance release.   Can I jump from 3.11 to 16.6?    You can jump from  3.X  to 16.X , as per my understand Cisco sto developping denali code that is 3.X  they are more focussing on 16.X Code for the further stable and furture releases.   When you upgrading from 3.x to 16.X read the release notes, it may require firmware upgrade.   https://www.cisco.com/c/en/us/support/ios-nx-os-software/ios-xe-16/products-release-notes-list.html ... View more

sure there is no space for catos  (Hope you mean CatOS not CastOS here).   they are end of life product, same features and advanced availabl new IOS to emulate.   ... View more

These 2 different product used to manage DC environment   see the PDF difference :   https://www.cisco.com/c/dam/en/us/products/collateral/software/one-data-center-networking-subscription/nb-06-aci-dc-nw-sub-offer-faq-ctp-en.pdf   en DCNM and ACI, do they not do the same thing?   Yes you can use why not ? ... View more

ACI uses ISIS internall, overall now most DC going BGP. there is inter-operability with OSPF, if you have Campus running with OSPF. / EIGRP. ... View more

as per my knowledge it support on 4.x other than some IOS read the release notes :   https://www.cisco.com/c/en/us/td/docs/security/vpn_client/anyconnect/anyconnect48/release/notes/b_Release_Notes_AnyConnect_4_8.html ... View more

what interfcace is this show only below MTU you mentioned ? SVI or Gig or 10Gig ? ... View more

yes that is correct. it spport as mentioned.   ... View more

to understand the problem in better way Can you post    show version show modules if not confidential post running config.   is this VSS ? do you have Quad supervisors ?  ... View more

There 2 options for your ipservice to work. 1. get ipservice image .bin file and replace with ipbase change the boot variable and should work as expected for your features. 2. check dir flash:/c3750-ipservices-mz.122-25.FZ   ( do you have .bin file inside)   check the show bootvar  where it pointing.   do below commands in config mode :   no boot system boot system  flash:/c3750-ipservices-mz.122-25.FZ/ipserve.bin  ( replace ipserve.bin with above resolve of .bin file). write and reload to test the boot.     ... View more

thanks for the sharng the input back, i know that was not the issue of routing, but like to try, since i was not aware what kind of setup you have.   i was also suspected due to ASA ACL issue, good and glad all resolved, shall we mark as solution here. for community user further reference. ... View more