About carl.townshend

carl.townshend · 01-14-2026

Hi AllI am aware of BGP flowspec, you have a server (flowspec controller) and clients which are the bgp neighbors to the controller?How does it actually work in practice? do all the ISP routers send netflow information to the controller and based on ...

carl.townshend · 01-12-2026

Hi AllI am currently looking into ddos protection services to protect some main internet links.What options are out there? I assume it would need to be further up the chain i.e in the ISP / Cloud ? Also, I see lots of them use BGP flowspec, what trig...

carl.townshend · 01-08-2026

Hi GuysI am looking to but some new Cisco secure routers, managed on premThe licences areLicence R-OS-M-E Cisco OS Essentials - Medium (Embedded, Perpetual) Licence LIC-ROS-M-A Cisco Routing Advantage Lic - Medium (84 months) My questions areWhat hap...

carl.townshend · 01-06-2026

Hi GuysIs it possible to setup a Cisco ISR router as a modem, so I can bridge the ISP to my Meraki FW behind it, It will connect to BT internet using pppoe, I want to pass the traffic coming in from the ethernet 0 interface to the LAN port fast ether...

carl.townshend · 12-22-2025

Hi GuysI need to purchase 2 routers for a large site, the site will have up to a 1Gig MPLS linked to each of the routers.I was looking at the C8300-1N1S-6T, however the later series has appeared to come out, the alternative model was the C8235-E-G2Th...

carl.townshend · 01-15-2026

HiSo the controller, would this be my router? or a central router in the ISP?How does the trigger work? would it be a seperate TMS (Threat management server) ? would this server then tell the flowspec controller to push the routes to the other bgp ne...

carl.townshend · 01-06-2026

I need it to be from the VDSL interface on the router, this is classed as Ethernet 0

carl.townshend · 01-06-2026

HiBecause in the UK, the ISP's still present the link on via RJ11 and require a VDSL modem as the DSLAMs use VDSL, Meraki does support PPPoE, but not VDSL hence why we need the router.

carl.townshend · 12-22-2025

Hi, this is really helpful, thankyou.So this is the best practice design then?I assume the route reflector will be part of the forwarding path between each leaf then ? and it will use OSPF to get to the bgp next hop ?

carl.townshend · 10-07-2025

Hi, when you purchase the DNA essentials licence, it says the crypto HSEC licence is automatically included, my question is then, once this DNA licence expires, will the HSEC licence also expire or will it continue to work?

Member Since	‎10-28-2020 08:45 AM
Date Last Visited	‎01-15-2026 12:03 AM
Posts	107
Total Helpful Votes Received	28

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How does BGP flowspec work

DDOS protection services - how do they work

licences on Cisco secure routers

Cisco ISR router as a modem in bridge mode

Which router ? C8300-1N1S-6T or C8235-E-G2

Re: How does BGP flowspec work

Re: Cisco ISR router as a modem in bridge mode

Re: Cisco ISR router as a modem in bridge mode

Re: BGP setup for spine and leaf

Re: Cisco Catalyst router licencing question