Rapid STP
I understand from Juniper public documents that rapid stp is the default available one. What I have understood of it is - it has faster re building time. Am I correct ? Is there any device which has...
View ArticleEX3400 no serial login prompt after recovery from bad upgrade
After recovering from a bad upgrade by reinstalling clean from usb, EX3400 standalone (new install) can't reach login: prompt from serial console. Seems like I am missing something simple as all the...
View ArticleEX4300 virtual-chassis - backup RE is poisoning the the mgmt IP's ARP entry...
Two EX-4300 devices in virtual-chassis (master/backup RE)VC mgmt IP: 10.232.1.100; MAC 10:0e:7e:a1:65:c0 (from the master; and from show int me0) When debugging an intermittent mgmt ip connectivity...
View Articlecan we claim EX2300 without JNPR ?
heloi know juniper EX series come with warranty 1 year support called JNPRhowever, if we purchase without JNPR. it mean if we receive defect product, ] do we have ability to claim or request RMA? thanks
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ethernet-switching table issue QFX10002
I observe a strange situation with the learning of mac addresses.Scheme is attached.Fact:If any host from internet (like 2.2.2.2) try setup tcp session with my host (1.1.1.1) - my switch (QFX10002-1...
View Articleexact part number
Hello There,Hope All is well, I need to extend a copper cable for around 40 meter maximum as an uplink from EX 2300 to EX 4600 what will be the part number of the SFP I shall purchase to give me a...
View ArticleEX4550, 40G QSFP+, no link
Dear, we have upgrade our EX4550-VC with ex4550-em-2qsfp-Modules.And also update Junos to the last recommened Version (15.1R7-S6). If we plug 40G-QSFP+ Modules into the Devices, they will successfully...
View ArticleBest practices and configuration changes
I have 6 EX2300-24P. One of the switch will be the core switch and together with remaining five will form hub and spoke topology. There will be 3 VLANS on each switch including Management VLAN. My...
View ArticleEX4200, PoE not working on all ports, how to set Voltage 24V instead 51.6V
hi all, I have issue when powerd up EX4200, poe is configured on all ports but seems that opeational status is off, this is config: set poe interface all set poe interface all telemetries set poe...
View ArticleQFX 3500 MLAG
Hello,Recently we used Arista with MLAG feature for redundancy and now are have in mind to use 2x QFX 3500 for one of our pop sites, can any one explain me how can i configure mc-lag between this 2x...
View ArticleLLDP on M120
HiI want to discover neighbor through LLDP but there's no LLDP command on M120.Any features can do like that?
View ArticleQFX3500 airflow qustion
Hello,We have some qfx3500 that their airflow are front to back so the cool air is entering from front of the chassis and exit from back of the chassis which 48x 10g is located, so my question is when...
View ArticleES2300 cannot connect
I installed Junos 18.3R3.4 on an EX2300 switch. I also updated JWeb to 18.2A1. The switch passes traffic without issue. The problem is that after a week or two the switch itself cannot be contacted....
View ArticleVirtual Chassis Split
Upon splitting of a VC after referencing some documents it's clear that both the members must split into independent masters. Make corrections to my understanding if I am wrong. Is it also possible...
View ArticleOuter vlan translation on QFX
Hi, can anyone that has sucsessfully configured vlan translation on an double tag frame please share a working configuration. I have managed to do this a MX, and also suceeded on doing a single tag...
View ArticleVLAN issue
Hi Fellas,I was trying to introduce a new vlan to the existing configuration on my qfx5100 device. The current version is 14.1x53-d26.2. I had everything running fine before. After I added new config...
View Articledifference between EX4600
Hello,Please can any one explain to me what is the main difference between these :EX4600-40F-AFI-TEX4600-40F-AFOEX4600-40F-AFII just checked the datasheet but didn't get it well ..I think front to...
View ArticleEX2300 packet-action log
Hiya. I am fairly new at JunOS so grateful for any help on the below: I am attempting to configure mac security on access ports on my EX2300 (18.1R3) but I just want to trap the mac violation and not...
View Articleex-3300 aging time and show ethernet-switching table
Hi All,I would like to understand how to read the value "Age" when I run the command show ethernet-switching table on ex-3300.From here:...
View ArticleEX4300-48p VC upgrade
Hi All, We are currently running with OS 14.1X53-D46.7 on EX4300-48p VC (total -6 switches). I would like to upgrade with new junos suggested released version - Junos 18.4R2-S3. Can I directly go from...
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