Re: TFTP over anycast
Thanks to you all for your answers, it has helped me a lot already. My design is very simplistic, I have 2 sets of firewalls that I will have advertising a /32 unicast to the network at each location and it will have a TFTP server behind each firewall. I have no intention to have this be part of the internet as it will be used to serve internal customers devices that require TFTP For the setup where you are running Anycast on a datacenter, are you running it inside the datacenter only or across multiple datacenters? other than having to replicate IPs and file services between datacenters have you seen any other issues? Kind regards, Javier Gutierrez, Network Architect – AS19016 https://www.peeringdb.com/net/4073 Westman Communications Group [cid:2db642a4-fcf9-40b4-a719-2afd8097f2e9]1906 Park Ave. • Brandon, MB • R7B 0R9 [cid:8862c057-cdef-45f6-a0e3-497508d0d64a]204.720.1158 [cid:6a35147d-b3b0-44cf-bc96-6822377f5231] gutierr...@westmancom.com<mailto:gutierr...@westmancom.com> [A close up of a sign Description automatically generated]<https://westmancom.com/personal> [cid:486e0290-5d40-48dd-80eb-3be9a705b1e6]<https://www.facebook.com/WestmanCom>[cid:425d7b57-d7e3-491d-9d22-910d4072b88a]<https://twitter.com/WestmanCom> [cid:ee77dd48-8761-498b-b45b-82b00e5bf553] <https://www.youtube.com/user/WestmanCom> [cid:547ce68d-d61c-40e3-b150-39bff72b8d6b] <https://www.instagram.com/westmancom> [cid:ba4751b3-edc0-484e-bb40-731ca94e8c84] <https://www.linkedin.com/company/westmancom> This e-mail and any attachments contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than intended recipient is unauthorized and may be illegal. From: NANOG on behalf of Bill Woodcock Sent: Saturday, February 24, 2024 1:09 AM To: Ask Bjørn Hansen Cc: nanog@nanog.org Subject: Re: TFTP over anycast CAUTION: This email is from an external source. Do not click links or open attachments unless you recognize the sender and know the content is safe. The system Ask is describing is the traditional method of using anycast to geographically load-balance long-lived flows. The first time I did that was with FTP servers in Berkeley and Santa Cruz, in 1989. I did a bigger system, also load balancing FTP servers for Oracle, their public-facing documentation stores, with servers in San Jose and Washington DC, a couple of years later. A couple of years further on and the World Wide Web was a thing, and everybody was doing it. -Bill On Feb 24, 2024, at 7:38 AM, Ask Bjørn Hansen wrote: On Feb 23, 2024, at 20:32, William Herrin wrote: The relay server `dhcplb` could, maybe, help in that scenario (dhcplb runs on the anycast IP, the “real” DHCP servers on unicast IPs behind dhcplb). Although they used the word "anycast", they're just load balancing. The idea is to run the relays on an anycasted IP (so the load balancer / relay IP is anycasted). [….] Relying on ECMP for anycasted DHCP would be a disaster during any sort of failure. Add or remove a single route from an ECMP set and the hashed path selection changes for most of the connections. Consistent hashing (which I thought was widely supported now in ECMP implementations) and a bit of automation in how announcements are added can greatly mitigate this. Ask
TFTP over anycast
Hi, I'm working on some DR design and we want to not only have this site as a DR but also performing some active/active for some of the services we hosts and I was wondering if someone had some experience with using anycast for TFTP or DHCP services? What are some of the pains/challenges you experienced and things we should lookout for? Any input is greatly appreciated. Kind regards, Javier Gutierrez
FastNetMon Usage in the wild
Hi, I wanted to drop a quick question as I would like to evaluate the FastNetMon solution to do DDoS protection and wanted to see what other companies are using it out there so I can have a base of how much should I recommend this. Thanks in advance for your responses Kind regards, Javier Gutierrez,
Using RFC1918 on Global table as Loopbacks
Hi, I have recently encountered some operational differences at my new organization that are not what I have been exposed to before, where the loopback of the core network devices is being set from RFC1918 while on the global routing table. I'm sure this is not a major issue but I have mostly seen that ISPs use global IPs for loopbacks on devices that would and hold global routing. My question is, what is the most used or recommended way to do this, if I continue to use RFC1918 I will save some very much desired public address space, but would this come back to bite me in the future? Kind regards, Javier Gutierrez,
RE: Juniper hardware recommendation
I need to do MPLS (vlls), VXLAN, Multicast, full routing tables, multiple VRFs, q-in-q, QoS Anything with 1Tbs of throughput should be more than enough at this time for me I also need it to be able to support 100G interfaces, 1G and 10G Javier Gutierrez Guerra Network Analyst CCNA R, JNCIA Westman Communications Group Phone: 204-717-2827 Email: guer...@westmancom.com<mailto:guer...@westmancom.com> [WCG_Corp_Logo_horiz_cFullcolorHR]<http://westmancom.com/personal/> [cisco-certified-network-associate-routing-and-switching-ccna-routing-and-switching] From: Ryan Hamel Sent: May 7, 2021 4:23 PM To: Javier Gutierrez Guerra ; nanog@nanog.org Subject: RE: Juniper hardware recommendation CAUTION: This email is from an external source. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hello! We wouldn’t be able to give any sort of answer without knowing your current and future requirements. Each model has its own throughput classes, and sometimes a full on MX router isn’t required. From: NANOG mailto:nanog-bounces+ryan=rkhtech@nanog.org>> On Behalf Of Javier Gutierrez Guerra Sent: Friday, May 7, 2021 1:55 PM To: nanog@nanog.org<mailto:nanog@nanog.org> Subject: Juniper hardware recommendation Hi, Just out of curiosity, what would you recommend using for a core router/switch from Juniper? MX208,480,10K Datasheets show them all as very nice and powerful devices (although they do use a lot of rack space and side to side airflow is painful) but I’m just wondering here what most people use and how good or bad of an experience you have with it Thanks, Javier Gutierrez Guerra Network Analyst CCNA R, JNCIA Westman Communications Group Phone: 204-717-2827 Email: guer...@westmancom.com<mailto:guer...@westmancom.com> [WCG_Corp_Logo_horiz_cFullcolorHR]<http://westmancom.com/personal/> [cisco-certified-network-associate-routing-and-switching-ccna-routing-and-switching]
Juniper hardware recommendation
Hi, Just out of curiosity, what would you recommend using for a core router/switch from Juniper? MX208,480,10K Datasheets show them all as very nice and powerful devices (although they do use a lot of rack space and side to side airflow is painful) but I’m just wondering here what most people use and how good or bad of an experience you have with it Thanks, Javier Gutierrez Guerra Network Analyst CCNA R, JNCIA Westman Communications Group Phone: 204-717-2827 Email: guer...@westmancom.com<mailto:guer...@westmancom.com> [WCG_Corp_Logo_horiz_cFullcolorHR]<http://westmancom.com/personal/> [cisco-certified-network-associate-routing-and-switching-ccna-routing-and-switching]
RE: How to manage Static IPs to customers
That's surprising to me, I have no intentions to do routing with our cable subscribers, that seems like a headache for both sides Today we have specific ranges within subnets from where we assign IPs to customers, my main problem that I'm trying to get around is having to change a customer static IP if their node gets splitter and I have to mode them to a different CMTS Thanks, Javier Gutierrez Guerra -Original Message- From: NANOG On Behalf Of Bryan Fields Sent: Thursday, May 7, 2020 5:57 PM To: nanog@nanog.org Subject: Re: How to manage Static IPs to customers CAUTION: This email is from an external source. Do not click links or open attachments unless you recognize the sender and know the content is safe. On 5/7/20 5:54 PM, Brandon Jackson via NANOG wrote: > I have seen (Charter) and heard quite a few run RIP or some other > routing protocol on the CPE. Yep, it's RIP. They don't support IPv6 on this either. I've been asking for IPv6 since 2006, it's always next year. -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net
How to manage Static IPs to customers
Hi there, Just wanted to reach out and get an idea how is people managing customers with static Ips, more specifically on Docsis networks where the customer could be moved between cmts's when a node is split Thanks in advance for all responses, Javier Gutierrez Guerra
RE: Arista Switches rebooting
Nope, basically, that this is a bug and developers are working on providing more debug data when this happens, for now is just unknown and could be caused by that ECC error that brakes the CPU Javier Gutierrez Guerra From: Ariel Biener Sent: Monday, May 4, 2020 9:31 AM To: Javier Gutierrez Guerra ; nanog@nanog.org Subject: Re: Arista Switches rebooting CAUTION: This email is from an external source. Do not click links or open attachments unless you recognize the sender and know the content is safe. Eos version? From: NANOG mailto:nanog-boun...@nanog.org>> on behalf of Javier Gutierrez Guerra mailto:guer...@westmancom.com>> Sent: Monday, May 4, 2020 5:27 PM To: nanog@nanog.org<mailto:nanog@nanog.org> Subject: Arista Switches rebooting Hi, Has anyone had issues with Arista switches rebooting out of the blue, when there isn't even a sufficient load on them to be a CPU or memory issue? We have a couple Arista 7280s both SR and CR that have had this behaviour, this is the second time we see this issue and just wanted to see if this is something anyone else is experiencing with this platfrom Thanks, Javier Gutierrez Guerra
RE: Arista Switches rebooting
EOS 4.22.0.1F But after contacting Support, the issue seems to be related to a ECC issue that causes CPU to reset, so a Aboot upgrade is required Field Notice 0044 - Arista<https://www.arista.com/en/support/advisories-notices/fieldnotices/8756-field-notice-44> Javier Gutierrez Guerra From: Ariel Biener Sent: Monday, May 4, 2020 9:31 AM To: Javier Gutierrez Guerra ; nanog@nanog.org Subject: Re: Arista Switches rebooting CAUTION: This email is from an external source. Do not click links or open attachments unless you recognize the sender and know the content is safe. Eos version? From: NANOG mailto:nanog-boun...@nanog.org>> on behalf of Javier Gutierrez Guerra mailto:guer...@westmancom.com>> Sent: Monday, May 4, 2020 5:27 PM To: nanog@nanog.org<mailto:nanog@nanog.org> Subject: Arista Switches rebooting Hi, Has anyone had issues with Arista switches rebooting out of the blue, when there isn't even a sufficient load on them to be a CPU or memory issue? We have a couple Arista 7280s both SR and CR that have had this behaviour, this is the second time we see this issue and just wanted to see if this is something anyone else is experiencing with this platfrom Thanks, Javier Gutierrez Guerra
Arista Switches rebooting
Hi, Has anyone had issues with Arista switches rebooting out of the blue, when there isn't even a sufficient load on them to be a CPU or memory issue? We have a couple Arista 7280s both SR and CR that have had this behaviour, this is the second time we see this issue and just wanted to see if this is something anyone else is experiencing with this platfrom Thanks, Javier Gutierrez Guerra
