I have (2) Nexus 93180YC FX switches setup in VPC. I’m connecting the two Nexus core switches to a catalyst 2960X.
I’m wondering if anyone knows how the Catalyst (or any switch for that matter) selects which port in a port-channel for traffic to exit on.
Based off some wiresharking it looks like the traffic is leaving the catalyst on the lower switchport number consistently.
Does LACP have a method for selecting a port to exit on?
I'm genuinely curious if I'm missing something, but I don't see the point of 25 GbE because 40 GbE was already established as a mature technology by the time they rolled it out. I can purchase 40 GbE ConnectX-3 gear all day long for around $40/card. Likewise, 40 GbE switching equipment is equally as cheap, I just picked up a Mellanox SX1036 for around $200.
The sequence of progression doesn't make sense ether, 1, 2.5, 5, 10, 25, 40, 50, 100, 200, 400. What about all the gaps between 50 and 400? To me it seems like it would have made more sense to do periodic multiples of 40... 80, 120, 160, 200, 240, 280, 320, 360, 400. This would have allowed for linear scaling of fanout cables. i.g 80 GbE = 2x 40 GbE, 160 GbE = 2x 80 GbE or 4x 40 GbE.
The transition between 50 and 100 is too large, the Linux software stack is struggling to push packets faster then 70 Gb/s... the ability to push packets in software vs hardware are highly divergent with regards to realized speed. If we would have set 80 GbE as the next target instead of 100 GbE the hardware vendors could have pushed out new equipment out the door faster and cheaper.
This all strikes me as not being well thought out in advanced.
I'm trying to figure out the west way to diagram the best routes of a network based on costs. Is there a program out there or an excel sheet or something where I put in the devices, connect all of them, put in the costs and it will tell me the route data will flow?
Most importantly, I am looking for a feature where I can change costs of circuits and it will autoupdate and tell me the new best route, dependent on the new costs.
Does anything like this exist? I'm a very visual person so my "ideal" program would be like
Input box 1 : Starting Router
Input box 2: Ending router
Output: Router A -> Router C -> Router B - Cost: 11
[Output Diagram of entire network, but the route taken is highlighted]
Thanks!
I recently became an IT support tech at a startup that only has myself and one person above me in our IT department. My boss was does not have a networking background so most of the networking problems are giving to me even though I would not consider myself a network expert by any stretch.
If you test our network speed using a speedtest like fast.com we are getting our advertised speed, ~100Mbps, but we only get 1MB/s actual real world download speeds, if we're lucky. Is this some sort of configuration issue that is eating our download speeds? Shouldn't we be getting 9-10MB/s?
I know this question is remedial, but due to the nature of "Accurate speed test speeds, slow download speeds." I have found it difficult to find an answer for this on Google and forum posts. Thank you for any help or advice on the issue.
Hello,
I have the attached design where the SRX cluster is connecting to standalone switches with one uplink. Hence i don't think i need reth interfaces. All the ports of the SRX will be trunk and the IPs will be on the irb.
I'm facing an issue with the failover, it doesn't failover once i disconnect from ge-0/0/3. I found the issue with the cluster interface monitoring and the node priority for RG1 is showing zeros as shown below:
Cluster ID: 1
Node Priority Status Preempt Manual Monitor-failures
Redundancy group: 0 , Failover count: 1
node0 100 primary no no None
node1 1 secondary no no None
Redundancy group: 1 , Failover count: 3
node0 0 primary yes no IF
node1 0 secondary yes no IF
Once I disable cluster interface monitoring the node priorities of RG1 become similar to RG0 which is supposed to be the case normally. I found my problem in this link but they proposed that the issue may be in the reth interface misconfiguration but i don't have reth in my configuration
https://kb.juniper.net/InfoCenter/index?page=content&id=KB19431&actp=METADATA
My questions are:
1- Am i allowed to configure a cluster without reth interfaces
2- Is there any workaround
Below is the configuration:
{primary:node0}[edit]
root@SRX-Active# show chassis cluster
reth-count 4;
redundancy-group 0 {
node 0 priority 100;
node 1 priority 1;
}
redundancy-group 1 {
node 0 priority 100;
node 1 priority 1;
preempt;
interface-monitor {
ge-0/0/3 weight 255;
ge-5/0/3 weight 255;
ge-0/0/4 weight 150;
ge-5/0/4 weight 150;
ge-0/0/5 weight 150;
ge-5/0/5 weight 150;
}
}
{primary:node0}[edit]
root@SRX-Active# show interfaces
ge-0/0/3 {
unit 0 {
description **Link-to-SW1-below**;
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/4 {
unit 0 {
description **Link-to-SW1-upper**;
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/5 {
unit 0 {
description **Link-to-SW2-upper**;
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/6 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/7 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/8 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/9 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/11 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/12 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/13 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/14 {
unit 0 {
family ethernet-switching {
vlan {
members vlan-trust;
}
}
}
}
ge-0/0/15 {
unit 0 {
family inet {
dhcp {
vendor-id Juniper-srx345;
}
}
}
}
cl-1/0/0 {
dialer-options {
pool 1 priority 100;
}
}
ge-5/0/3 {
unit 0 {
description **Link-to-SW4-below**;
}
}
ge-5/0/4 {
unit 0 {
description **Link-to-SW1-upper**;
}
}
ge-5/0/5 {
unit 0 {
description **Link-to-SW2-upper**;
}
}
dl0 {
unit 0 {
family inet {
negotiate-address;
}
family inet6 {
negotiate-address;
}
dialer-options {
pool 1;
dial-string 1234;
always-on;
}
}
}
fab0 {
fabric-options {
member-interfaces {
ge-0/0/2;
}
}
}
fab1 {
fabric-options {
member-interfaces {
ge-5/0/2;
}
}
}
fxp0 {
unit 0 {
family inet {
address 192.168.1.1/24;
}
}
}
irb {
unit 0 {
family inet {
address 192.168.2.1/24;
}
}
}
Is there anyone here that has transitioned out of Networking or IT altogether and survived to tell us about it?
The always on call/standby, denied vacation requests (with a large amount of vacation time accrued), Unflexible scheduling, long hours, etc. wear on people quickly. After being in several organizations it seems to be just a common theme across the IT industry. I know there are jobs/orgs where this isn’t the norm, but those seem to be rare these days. The Network Admin/Engineer pay is hard to compete with in other career fields in the Southern US. What are some other career fields that may offer better work/life balance and comparable pay that wouldn’t require starting from scratch? Has anyone here made a career switch that improved their quality of life? Has anyone made the switch and then ended up coming back? Curious to hear your thoughts and experiences.
Hey group been pretty swamped lately and I’m located in Canada and have 1 wireless site survey needed for a Ubiquiti network. It’s not a blanket site survey but more of a assessment and troubleshooting day job. It’s based in New York and they are considering switching over to Aruba HP aps. Someone please pm me or reach out to me on Sitesurveypros or see my YouTube page or LinkedIn. Also please only contact me if you have airmagnet or Ekahau with a spectrum analyzer.
Been doing a lot of studying on RSVP for MPLS, specifically for Juniper. It's a very full-featured protocol with lots of options supported by Junos. But it sure seems like it carries a lot of configuration overhead. The company I work for has enough capacity to simply use LDP without need for MPLS traffic engineering (for now!). But it does look like there are some autoconfiguration mechanisms available which may simplify its use. Just curious for those who may use it in their networks - how does your company manage RSVP configuration? Manual configuration of LSPs or automated methods? What's your experience with it?
First off, we're a small business and don't have an IT guy, I know a little, but it's not my job. We'll hire someone to do any necessary work but I'd like to understand what we can do first.
Our network is currently composed of 3 Unifi us-24-250w switches providing PoE for some IP phones and gigabit connections to a few computers. There are also some Unifi wireless access points, I believe routing is being done by a SonicWall TZ400, as it's my default gateway (???).
One part of our business involves a half dozen or so computers which are constantly moving large files over the network from a single storage server. Its a bottleneck in our production and I'm about to upgrade the server computer to have an SSD for those files, or get a NAS with RAID, But even in that case, our 1Gb network can only move 125MB/s and an SSD can do ~2000MB/s.
I would like to upgrade these half dozen computers to a 10Gb network, just so they can communicate with each other and the file server more quickly, but I don't know if I need to upgrade anything else.
The building is wired with Cat6 so I was looking at something with 10GBASE-T, either this QNAP QSW-1208-8C-US or to keep everything consistent, this Unifi US-16-XG, but I like that the QNAP has enough RJ45 ports. Then I'd get some 10Gb PCI-e cards for the PCs in question.
Now to my actual questions:
Does anyone have a resource they use to find out what type of jack fits into a specific faceplate?
I have a bunch of bad jacks that look like this link https://imgur.com/cXwJkmW . The plastic is actually just deteriorating.
The faceplates and jacks don't have a name on them. Are there standards or a way to look up what will fit what?
Thank you.
