DCBX Issue
Hello. We are using EX4500 devices to connect our iSCSI SAN network which is run by Equallogic. A few years ago I set up DCBX on the EX4500 according to a Dell guide we found on their site. I admit...
View ArticleCopy files using HTTPS on EX-Series devices
Hi Guys, I tried to copy files using HTTPS from a remote file system to an EX4200 (Junos 12.3 R8.7) with the following command:file copy https://<host>/<dir>/file.txt...
View ArticleLAG with active/passive links
So we have two EX4300 in a VC. Lets call the VC J-SWITCH1Then we have another environment that consists of two cisco switch stacks, each stack has 2 members.Lets call them C-SWITCH1 and...
View ArticleHigh CPU Load and MAC issues
Hey all, we are currently experiencing issues with ARP resolutions and high CPU load on a mixed virtual chassis with EX4200 and EX4500. I get a lot of these messages in the logfiles (filtered) Mar 2...
View ArticleEX3300 config issues for fiber ports?
Hello,I'm trying to add a EX3300 switch to my rack to take advantage of new fiber lines. Our fiber lines are directly conntect to the first port of the EX3300 switch and all the ethernet ports seem to...
View ArticleCan't talk between Switches after update
I'm having a wierd issue where after rebooting one of my ex4300s. It can no longer ping irb ips on the adjacent switch. Currently, this is a lab environment and just working on getting a working setup...
View ArticleQFX 5100
Hi - We are getting these errors in syslog what does it mean hardware? We already did a reboot on the switch and didnt see anything bad. Mar 3 17:23:57 20050.qfx.vc fpc1 localttp_send: Error (32), buf...
View ArticleRadius and local users
Hello, I have configure radius authentication for ex4200 and everey thing works fine:set system authentication-order [radius password] set system radius-server 192.168.1.2 secret xxxxxxxI have one...
View Articlearp issue on EX4300 with RTG interfaces
Hi,I configured RTG with 2 interfaces on EX4300 switches (junos 14.1), theese 2 interfaces are connected to 2 QFX5100 as in the attachement file. (please see attachement).- spanning tree is deactivated...
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EX4300-48T with rare behaviour
We recently purchased 5 brand new EX4300-48T switches to replace EX3300-48T switches we have in service (mainly because of the dual PS capablities in EX4300 not present in EX3300).All of them came with...
View ArticleEX3300 Uplink Performance
At the end of October I moved a EX3300 two member VC from one site to another and had to change the uplink as it now spans a greater distance on SMF instead of MMF, plus it connects to a 3rd party...
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JUNIPER QFX 5100 and VMWARE ESXI CONNECTIVITY CONSIDERATIONS
Recently, I came across a challenge where I have to deploy QFX VCF as server farm switching block and configure it for connectivity with VMware ESXI hosts. Initially it seems very simple deployment and...
View ArticleEfficient VRRP Configuration Recommendation
Hello, I'm at the last part of my lab testing before migrating our cisco infrastructure to juniper. I'm hoping if someone could provide some insight and recommendation for our infrastructure need....
View ArticleUpgrade JunOS EX4200 Virtual chassis member
We recently had two new switches (EX4200-48T) added to an existing Virtual Chassis, but where the JunOS versions are deviating from the existing members of the VC (as shown below). As we rely on fairly...
View ArticleTransfer-on-commit not working on two switches
We have 21 switch stacks on campus, nearly all of them are EX4200sFor 19 of these archive on committ is working fine, for 2 it is not I have looked at the configs carefully and even recreated them on...
View ArticleHow to troubleshoop flapping ports?
Below is the output of show log messages on one of my switch stacks. As you can see I have ports flapping quite often.Does this just mean the device (computer) that is attached to this port is being...
View ArticleEX2200 15.1R1.8 adding VLAN to interface is not accepted - is it the...
Hi, When adding a VLAN with the name "STAFF_9" to an interface via J-Web by modifyting the interface, a COMPARE before the commit shows no changes. Adding to the interface to the VLAN via the VLAN...
View ArticleWhich JunOS version should I install on EX2200/3300/4500?
Hi. I want to update JunOS on our EX2200/3300/4500 series switches.The latest domestic release is 12.3R12, but according to KB21476 recomndation I should install 12.3R11. Maybe this article is...
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EX4600 Virtual Chassis - having trouble making it show up.
This is new setup for me, Two EX4600, and Two EX4300. I am trying to get the 4600 VC'd.I have VC'd EX2200 before with no issues, but this is kicking my butt.I want to use, et-0/0/24 to connect both of...
View ArticleMoving "vlan mapping" config. from Cisco 3750 switch to Juniper EX4200 VC
Hello,I'm need your help, few days I tried move "vlan mapping" configuration from Cisco 3750 to Juniper VC EX4200 and at the moment not successfully, I have following coniguration on Cisco 3750:...
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