Console Connected Blues - Can't stop the autoconfig

I’ve got what I hope is an easy question for all of you,

The preamble is I’m a sys admin at a non-profit, and with the covid business going on, IT staff has been reduced by 1/2, onsite to 1/3 of former staffing levels, and I get to wear a network hat now. Which aside from my friends losing their jobs, I actually have enjoyed doing/learning.

So I’ve figured out which switches connect to where over the building, port audits, tracking down mac address, re wiring coms closets, and my next project will be to replace all 2950 cisco switches with 2960, which will make everything PoE (yayyy) but still old (boo)

But, I Have a problem adding WAPs to my environment, A specific model isn’t adding associating through my WLAN controller, I’ve got cisco support and I need to get the capwap event data, but this is where my issue begins.

For starters I can’t ssh into it, then it turns out that these waps are really picky about usb to serial console cables so I have to hook the wap up to a pc that has a serial port and then console into it directly. But, the problem is after it boots, it keeps trying to allocate itself to my network and set the radials and I can’t enter commands cause it just keeps going and going and going. I can’t figure out how to break the auto commands, ctrl + c doesn’t work, crtil+shift+6, and crtil+shift+6+x doesn’t work, it driving me mental, and I have a deadline on this guy,

Does anybody have any info that could help me out? Or, If I posted to the wrong sub, or, if you need more info, please let me know

Thanks guys! <3 Islandlucky

Migration from PfRv2 to PfRv3

I hope anyone has experience with PfRv3. We used to have PfRv2 which was working between two ISR4431 routers in the same site, they will get BGP default route from different ISPs and have internal iBGP running between them. And PfRv2 was injecting routes in a routing table of each router based on the performance.

Now, after the upgrade of ISR4431 routers, it seems like Cisco dropped Pfrv2 in favor of PfRv3. And it is my understanding that PfRv3 can't really do what we were doing with the previous version, it's more for connectivity between sites. An I wrong? Any ideas on how to make it work for my case scenario (just need to balance outgoing traffic based on performance in a single site)?

I opened a case with TAC and they can't help with the configuration, can only troubleshoot if something is not working.

Thanks,

I may sound stupid, but I need to ask a question

What prevents a computer from sending a packet to 2 computers with the same IP address and subnet mask?

In school we sometimes configured a computer wrong with the same IP as someone else. We always used 192.168 and 255.255.255.0 for our IPs.

Dual-plane disjoint path in Segment Routing

Recently created a article on how simply the use of Anycast-SID can be used to enforce traffic to disjoint paths in dual-plane architecture. SO , thought of sharing here.

Dual-plane Disjoint paths | In this article we will discuss how Anycast-SID can be used to send different traffic types across dual-plane disjoints path networks. Though, there are other SR based methods to achieve same functionality , one of them is using IGP Flex-algo and other is by dynamic SR policy using SDN controller (SR-PCE) . In today’s discussion , will see how to use Anycast-SID and define Explicit candidate path to achieve the same functionality .

A brief on Anycast-SID , it is a Node Prefix-SID that is advertised by more than one node (typically two or more ). The set of nodes advertising the same anycast-SID form a group called as anycast set. By using an Anycast-SID in the SID list of an SR policy path , it helps achieving traffic load-sharing and resiliency. Apart from this, it can be used to have traffic engineered path through a set of nodes or region (can be called as plane in the network)

Understand Dual-plane vs Single-plane in context with Segment Routing

Dual-plane is the mechanism to enforce disjointness in the network , where , the traffic path towards destination node stays within a set of nodes ( called plane). There can be multiple planes in the network, so that different planes in the network can be. used for different kind of traffic types depending upon the SLA, a service provider signs with customer. Anycast-SID allows creation of such macro policies, such as , “flow of traffic 1 from node A to B must go via plane 1” and “flow of traffic 2 from node A to B must go via plane 2.” This is practically called dual-plane disjoint path architecture.

Dual-plane disjoint path use case

Assume there is L3 VPN service required between nodes S1 and S10 with two VRFs. These two VRFs should be carried over disjoint paths. Traffic of first VRF should be send across orange plane and traffic of second VRF should be carried via green plane.This can be simply achieved by steering traffic of first VRF into SR-Policy of orange plane , similarly, steering traffic of second VRF into SR-Policy of green plane.

If you are interested further in step-by-step details, how this is done , you can visit here

Need help selecting a good wireless bridge that will be moving consistently in a circular pattern. Any ideas?

I work for a dairy technology company. So if you are familiar with rotary milking systems that is a plus. If you're not. Just imagine a fair's merry go round but for cows.

​

Now imagine every horse on the merry go round has an Iot POE powered device, with a network switch attached to the center pivot. The switch is powered by a slip ring power connection, and so rotates with the platform, staying fixed relative to the horses/stall on the carousel.

​

I need to get a wireless bridge to connect these POE devices back to a main access point. The bridge can be fixed to the top of the carousel and will always have line of sight, but will be rotating, and so needs to be omnidirectional. The distance is maybe ~40-50 metres point to point.

Any recommendations?

More details/images:

https://imgur.com/a/aIEOlUm

Cisco Catalyst 48X10GE stackable

Hello community,

I create this post because I'm currently looking into buying about 26 switchs. In the best case scenario those need to be 48 ports 10G, stackable and they will be used a pairs. However looking at the Cisco range I might have to go for WS-C3850-48XS-S or even considering this WS-C4500 and use VSS. Nexus aren't an option.

Does anyone would recommend another models, it can be EOS as we don't feel necessary to purchase any kind of cisco smartnet.

Goal is to find a cost effective solution!

Any advices would be welcome, cheers

48 Port Access switches?

Hi,

We have a bunch of Cisco 3560 PoE access switches now, and we're probably going to move pretty entirely to a soft phone solution so PoE will slowly not be a need (Aside from maybe a couple of switches for the odd meeting room phone, odd hard phone at other places etc..) 802.3af should be sufficient as we're just powering phones.

There is an "argument" for PoE for 802.3bt but that's incredibly expensive atm and very few devices even support that. We're on a low budget, so I thought I could get some beefy distribution / core switches, and spend a lot less for the access ones

Does anyone have any that may be decent? I've seen Mikrotik, Ubiquiti and fs.com switches which are a lot cheaper than Cisco

Dell PowerConnect 2848 VLAN Trunk Configuration

Hello

I have a Dell PowerConnect 2848, I need to configure a Trunk-port/Tagged VLAN. I do not have any experience with Dell switches..

The interface shows the following:

https://i.imgur.com/jIHwcy8.png

I believe the status in "current" with "U" stands for Untagged, meaning access-port. I'll like to configure Interface gi28 with untagged/native vlan1 as today, and tagged vlan 64. How should I configure this?

Should I add VLAN 64 as a "Static" assignment in the WebUI to gi28, - And can it be done without disturbing services at VLAN1 (it should remain in service and untagged during the config change)

Hope to hear from someone who has configured a Dell switch before .. :-)

Brgds, Steffen.

Will the number of subscribers of an internet service provider affect speeds?

I'm sorry I really don't know anything about this and I don't even know if this is the right place to ask but here it goes:

We're choosing between 50mbps and 75mbps speeds and I found that 50mbps is sufficient, but my gather argues that we need the 75mbps option since by the time we start classes, there will be a lot of people connected to the internet and I'll eventually have a very slow connection with 50mbps because of traffic or something. Is this true? Considering that I'm talking about maximum speeds through fibr connections and there are more and more people connecting with the ISP per day.

Squid proxy help

/r/HomeNetworking/comments/hdo9ty/squid_proxy_help/