Re: Best TAC Services from Equipment Vendors
We were one of the earlier adopters of Cisco ACI. Any issues with ACI were automatically escalated to an engineer that could fix almost anything.Now ACI tickets seem to go though a generic queue and the tech doesn't even know how to spell ACI. We continue to have the same type of failure with Cisco DNA Center and TAC has to engage the business unit nearly every time to fix it. Sometimes it is like presenting a case to the supreme court to get the business unit to engage. They collect so much data that I wonder if it would be easier to ship the servers to them. Curtis Parish 615.494.8861 Senior Network Engineer IF CLASSIFICATION START IF CLASSIFICATION END
RE: Any Verizon datacenter techs about?
If the building is over 30 years old I can guarantee you it is at least 75% empty now. P.S. If there was any way to get a tour inside of there at least I'd totally sign a NDA for that. :) Never been inside, let alone near, a CO before. -- John Musbach
RE: One FCC neutrality elephant: disabilities compliance
Way off topic but the Act may had around 2K pagesbut the rules and regulations go with it are at 20K and counting . That is what people are referring to. -Original Message- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of valdis.kletni...@vt.edu Sent: Friday, February 27, 2015 2:35 PM To: Mel Beckman Cc: nanog@nanog.org Subject: Re: One FCC neutrality elephant: disabilities compliance On Fri, 27 Feb 2015 20:12:21 +, Mel Beckman said: Two pages? Read the news, man. It's been widely reported that the actual Order runs to over 300 pages! It was also widely reported that the Affordable Care Act was 20,000 pages, when in fact it was about 1,900.
RE: Comcast thinks it ok to install public wifi in your house
On the converse side I live in a neighborhood that has quite a bit of distance between houses yet I can still a couple of neighborhood SSIDs.If one of their guests hops on to my Xfinity Wifi it is going to be with a weak signal. Their weak signal is going to drag down the performance of the wireless network for all the users on the access point. Comcast enabled the Xfinity Wifi on my modem and I had a five month battle with them to trying to get it turned off. Comcast kept telling me I did not have a wireless gateway and I must be seeing my neighbors signal. They never could fix their records so they sent me a new modem. A month later I got a letter saying they were turning on the Xfinity Wifi. This time I was able to log in and turn it off. curtis Curtis Parish Senior Network Engineer Middle Tennessee State University In analyzing my neighbors who use comcast (I live in a townhouse and can see many access points) my biggest complaint is the the wifi pollution these comcast router/access-points cause.
RE: Multi-homing with multiple ASNs
Thanks to everyone for your input on our less than desirable BGP situation. I do want to make sure I add that the state network we are a part of serves everything from elementary schools, to universities. to the traffic cameras on the interstate.Many of these are in rural locations and in the past each state entity had created their own network including two separate state university networks.The state vendor managed network was created to save money and provide higher level services than just an ISP. Among other things it serves as the private WAN for some state agencies.As our internet redundancy and bandwidth demands have increased we have outgrown the need for the high touch services offered by the state network but we must participate in order to maintain WAN access to other state universities. Thanks again for the feedback. Curtis Curtis Parish Senior Network Engineer Middle Tennessee State University -Original Message- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of joel jaeggli Sent: Sunday, November 23, 2014 1:21 PM To: mark.ti...@seacom.mu; nanog@nanog.org Subject: Re: Multi-homing with multiple ASNs On 11/21/14 1:07 AM, Mark Tinka wrote: On Friday, November 21, 2014 12:00:47 AM Curtis L. Parish wrote: We have recently added a second ISP (third if you count I2). Our first ISP is actually a private state network that peers with two Tier 1 providers. We own an AS number and our IP space but at the last minute learned our state network is advertising our network using two different ASNs (neither ours) so they can load balance their connections.If you hit the right looking glass server you can see our network advertised by three different ASNs.We were told by the new ISP that this is a problem but the state network says it is not. Looking for opinions and words of wisdom on this split advertising issue. Why aren't you originating your own prefixes and ASN by yourselves, since you own both? The practical problem here is that the control of prefix origination is distributed. so if there is a need to withdraw it from the state network or advertise it no export for some reason (e.g. performance problem maintenance etc) you likely can't. Their grasp of load-balancing seems a bit shallow also. Mark.
RE: Multi-homing with multiple ASNs
Thanks for all the responses. I will answer a few questions that have come on and off list. (Sorry for length) We advertise our ASN into the state network with more specific routes that we advertise via ISP2 via our ASN.This is done because the state (vendor managed) network runs stateful firewalls and we have to force other multi-home entities on the state network to use our state connection instead of ISP2. Our network has been removed from the state firewall due to previous problems with asymmetric routing with our I2 circuit.I am told the state network does drop our network from their advertisements when our network is unreachable. That has not been explained or tested. What we did not realize until about a week before turning up ISP2 was the state was consolidating all state networks to use two of the vendor’s ASNs when it peers with their two ISPs. Our ASN is not part of the path.We had no choice but to turn up ISP2 due to bandwidth reasons. Miraculously we achieved almost a 50/50 balance of traffic.Bandwidth will be increased on ISP2 as demand grows so we will need the ability to prepend on the state network to make ISP2 look more desirable. I believe the state will modify their advertisements to add our ASN to the path but changes to advertising via the state network has to go through a design and change management process and then be scheduled into maintenance windows. Any attempts to balance the traffic via prepending will take weeks.As long as the traffic stays balanced we are OK.When replaying BGP route changes I normally see our network only advertised out one of state ASNs but occasionally I see it with two so traffic balance may be impacted depending on which ISP the state is egressing. Here is a question. I know that having one network advertised by multiple ASNs is unconventional and thus it will probably be harder to get help troubleshooting routing problems when they arise.Do you see a situation where our network might be caught in a loop or black hole due to asymmetric routing and conflicting advertisements? Thanks again. New to the list but have already learned much by reading the archives. Curtis Curtis Parish Senior Network Engineer Middle Tennessee State University Subject: Re: Multi-homing with multiple ASNs Howdy, If you drop your connection to the state network, do the routes with their AS numbers drop out of the looking glasses? If not, then there's a problem. If you depreference your connection to the state network by prepending your AS number, do comparable prepends appear at the looking glasses or does the state network continue to give its advertisement of your address space top billing? If the state network's behavior strips your ability to load balance your network then there's a problem. Conventionally, the state network should be adding its AS number after yours, not stripping your AS number. More often than not, this convention is also the technically correct course of action.
Multi-homing with multiple ASNs
Greetings, We have recently added a second ISP (third if you count I2). Our first ISP is actually a private state network that peers with two Tier 1 providers. We own an AS number and our IP space but at the last minute learned our state network is advertising our network using two different ASNs (neither ours) so they can load balance their connections.If you hit the right looking glass server you can see our network advertised by three different ASNs.We were told by the new ISP that this is a problem but the state network says it is not. Looking for opinions and words of wisdom on this split advertising issue. Thanks curtis Curtis Parish Senior Network Engineer Middle Tennessee State University
