Is 10Gb possible 10GBASE-T SFP+ Transceivers?

Starting to upgrade more systems to ones that have 10Gb built in, in the form of 10GBASE-T. Most workstations I oversee have already been connected via short runs of CAT6a (~ 12-20m). The quick solution to hook them up, would be utilizing the 10Gb SFP+ ports on the Juniper QFX-5100-96S “core” stack in my facility.

I’ve tested a small handful of SFP+ to 10GBASE-T transceivers, but I can’t ever seem to get better throughput than 5Gb/s. I’m sure there are better ones out there. I’ve been eyeing the SmartOptics, since that’s normally what I use for the QFX. I would also like to utilize some of the SFP+ ports on a handful of Brocade Ruckus edge switches, for the small handful of systems that are too far away.

My question is, as in the title, is it even possible to get full 10Gb out of an active adapter like this? If so, what brands would one recommend? Thanks in advance.

C3850 switch software upgrade issue

I have a spare C3850 switch that I wanted to use and the code was version 3. I attempted to upgrade to the newest stable release but after the switch going into reboot, it has been stuck with the "SYST" light flashing for about more than an hour. Is this normal behavior or is something wrong? I don't remember it taking this long on another C3850 I was working with a couple weeks ago.

Wifi connectivity switch

How can i make my home internet connection turn auto off and on, at a particular time(children), without disturbing power to (router/access point), or its software configuration.Any beginer materials.

Any feedback on Cisco trainer KB and his SDA Bootcamp

Am thinking about buying KB's SDA Bootcamp that starts next week. Has anybody here learn from him / have any suggestions about alternate courses I should explore.

Here's a link to the course — https://kbits.live/courses/sda

It seems comprehensive, and he seems to have a decent rep but I just wanted a quick sense check from the folks here.

Work has not set up ethernet internet for me in 18 months. I'm still working. Will plugging an ethernet switch do anything to the network?

Plugging an ethernet switch into a wall port and running 2 ethernet lines from it? For a coworker, one who has ethernet ready internet, and myself the hotspot user. Will anything weird happen if this is done?

So both of us would be running off the same wall port

ASR920 untagged BDI spanning tree?

Hi,

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i'm relativly new to cisco when it comes to bdi interfaces, port channeling and high availability.

we have problems with our cisco asr configuration and need some advise how to fix that.

How do we prevent the customers from creating loops / blocking the second port?

here is an example of how our infrastructure looks like:

https://imgur.com/a/ugUZQx2

We can not get spanning tree / BPDU running.

if a customer is bridging the 2 interfaces which we provide them we get loops and that brings down both Ciscos and we lose the BGP Session to our provider.

Here is a config snipped of our ASRs:

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version 15.6 no service pad service timestamps debug datetime msec service timestamps log datetime msec localtime service password-encryption no platform punt-keepalive disable-kernel-core platform bfd-debug-trace 1 platform xconnect load-balance-hash-algo mac-ip-instanceid platform tcam-parity-error enable platform tcam-threshold alarm-frequency 1 ! hostname Router-RZ01 ! boot-start-marker boot system bootflash:asr920-universalk9_npe.03.18.08a.SP.156-2.SP8A-ext.bin boot system flash asr920-universalk9_npe.03.18.08a.SP.156-2.SP8A-ext.bin boot-end-marker ! ! vrf definition Mgmt-intf ! address-family ipv4 exit-address-family ! address-family ipv6 exit-address-family ! logging buffered 32768 ! no aaa new-model clock timezone MET 1 0 clock summer-time MST recurring last Sun Mar 2:00 last Sun Oct 3:00 facility-alarm critical exceed-action shutdown port-channel load-balance-hash-algo src-dst-ip ! ! ! multilink bundle-name authenticated ! ! license boot level advancedmetroipaccess ! ! spanning-tree mode mst spanning-tree portfast default spanning-tree portfast bpduguard default spanning-tree portfast bpdufilter default spanning-tree mst 0 priority 0 sdm prefer default ! redundancy bridge-domain 1 bridge-domain 100 bridge-domain 101 ! transceiver type all monitoring cdp run ! ! ! bridge irb ! ! interface Loopback0 ip address XXX.XXX.XXX.XXX 255.255.255.255 ! interface Port-channel1 no ip address spanning-tree portfast service instance 100 ethernet encapsulation dot1q 100 rewrite ingress tag pop 1 symmetric bridge-domain 100 ! service instance 101 ethernet encapsulation dot1q 101 rewrite ingress tag pop 1 symmetric bridge-domain 101 ! ! interface GigabitEthernet0/0/0 no ip address load-interval 30 shutdown negotiation auto ! ! interface GigabitEthernet0/0/19 description Customer1 no ip address load-interval 30 negotiation auto cdp enable service instance 100 ethernet encapsulation untagged bridge-domain 100 ! ! interface GigabitEthernet0/0/22 description Customer2 no ip address load-interval 30 negotiation auto cdp enable service instance 101 ethernet encapsulation untagged bridge-domain 101 ! ! interface TenGigabitEthernet0/0/24 description PortChannel1 no ip address spanning-tree portfast channel-group 1 mode active ! interface TenGigabitEthernet0/0/25 description PortChannel1 no ip address no negotiation auto spanning-tree portfast channel-group 1 mode active ! interface TenGigabitEthernet0/0/26 no ip address shutdown ! interface TenGigabitEthernet0/0/27 description Uplink ip address XXX.XXX.XXX.XXX 255.255.255.252 ! interface GigabitEthernet0 vrf forwarding Mgmt-intf no ip address shutdown negotiation auto ! interface BDI100 description Customer1 ip address XXX.XXX.XXX.2 255.255.255.248 standby 0 ip XXX.XXX.XXX.1 standby 0 priority 250 standby 0 preempt standby 0 authentication md5 key-string 7 XXXXXXXXXXXXXXXXXXXXXXXXXX load-interval 30 ! interface BDI101 description Customer2 ip address XXX.XXX.XXX.114 255.255.255.248 standby 0 ip XXX.XXX.XXX113 standby 0 priority 250 standby 0 preempt standby 0 authentication md5 key-string 7 XXXXXXXXXXXXXXXXXXXXXXXXXX load-interval 30 ! ! router ospf 100 router-id XXX.XXX.XXX.254 auto-cost reference-bandwidth 100000 redistribute connected subnets redistribute static subnets network XXX.XXX.XXX.16 0.0.0.7 area 0 default-information originate ! router bgp XXXXX bgp log-neighbor-changes neighbor XXX.XXX.XXX.XXX remote-as XXXXX neighbor XXX.XXX.XXX.XXX description Link ! address-family ipv4 network XXX.XXX.XXX.0 neighbor XXX.XXX.XXX.XXX activate exit-address-family ! ip forward-protocol nd ! ip bgp-community new-format no ip ftp passive ! ! control-plane 

4x Core switches with two PSU each using 1 to 4 Power split???

Reddit,

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Building a new MDF and going over the power requirements. Currently we have 4 Dell S4148 Core switches that have two PSU's each. C13 to C14 Power cables.

Curious to know if this is smart or stupid. Since there are two redundant PSU on each switch, and we have two circuits with two PDU's on each side of the rack, would the following one-to-four power cable be OK to use ONE slot on the PDU to feed 4 of the Core switches?

The following Amazon link is what I'm considering purchasing, thoughts?

https://www.amazon.com/IEC320-Female-Socket-Splitter-Spliter/dp/B075D8FFFH/ref=sr_1_13?crid=2SAFM0S1EH4A7&dchild=1&dd=AMvNZzOQilBHeFMu1RGHuA%2C%2C&keywords=c13+to+c14+power+cord&qid=1600100527&refinements=p_85%3A2470955011%2Cp_90%3A8308921011&rnid=8308919011&rps=1&sprefix=c13+to+c14+power%2Caps%2C178&sr=8-13

I figured, nobody should be unplugging power cables anyway, this would allow the cables to look SUPER clean and labeling would be a breeze. The catch though... it's only one cable to four switches, however, it's also the same on the redundant side. Is it really that much of a concern? After all, that ONE PDU only has ONE cable going to the ceiling.

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tl;dr - one to four C13 to C14 power cable smart or stupid for Core switches? and... really any 'pair' of devices?

IT documentation - logical system connection.

Hello.

I`m familiar with Visio and use MediaWiki to write some details. I don`t need to evidence hardware on sites. I wonder what to use to document application? OK create in Visio export to png and add to MediaWiki, but maybe it is something better, faster? It is easier to send someone from mgmt png in mail or link to png, not Visio file (probably will not open attachment). App servers, DB servers, Users from WAN and Internet FW, LB etc. This kind of documentation/notes. Some tools that check and report to creator in time that "in this documentation there was no changes since [DATE] or i.e. 3 months". I wonder how to control change? Probably everyone of us has documentation from first run of application and then changes in hardware are made and not update on documentation. I need network information on diagram s2s name, maybe sysadmins department name or IP or in LoadBalancer info about Pool (i.e. 3 servers in pool). Normal stuff put in Visio.

Any suggestions? Or stay as it is and use Visio, upload to MediaWiki, and png as a thumbnail?

Brocade switches

Has anyone here had experience with brocade switches? I found a good deal on a ICX6450-48P and just wanted to check and see if it was any good. Also, I saw that there are references to port licenses on brocade's website. It this something that I have to worry about?

Sample python scripts

Hello everyone,

Not sure if I have posted this before but I want to get some ideas as of where a python script can help in my day to day life in an enterprise network.

We have Cisco equipment, Solarwinds management server with NCM module installed and recently Cisco DNA.

The thing is, we don't do much in regards to config. Most of the stuff is being configured from the team in India, which leaves us room for project work.

However, I have never seen a need to automate anything with Python that our tools cannot do. Solarwinds NCM has good features in regards to identifying and reporting missing or excess lines of config, and if I need to configure an interface, it would be easier to do it myself.

So what are some good cases that you have used in production that made python worthwhile?