PVLAN ARP Poisoning Preventions
All,I am setting up a PVLAN on QFX5200 switches and want to prevent ARP poisoning on the promiscuous router port. Because the ports involved are also part of MC-LAG groups, it is my understanding that...
View ArticleJuniper EX4300MP activity LED's
It is a bit unusual and I could not find any reference to this behavior:On this switch, EX4300MP some activity LED's are lit when there is nothing plugged into the port. Not just lit green, sometimes...
View ArticleAggregated ethernet
Hi All I have 2x EX2300-48T switches that I have just enabled aggregated ethernet on. Both are running the same version (15.1X53-D590) with pretty much 98% identical configuration on, 1 switch has...
View ArticleVirtual-Chassis QFX5100
Hello, I upgrade my QFX 5100 to JunOS 17.3R3.10Model: qfx5100-48s-6qJunos: 17.3R3.10 I create a virtual-chassis between 2 QFX. At the beggining i had some trouble with vc-port but now it's OK.show...
View ArticleObject Groups for ACLs like cisco
Hi, Guys, Can we use object groups for ACL in juniper switches as mentioned in the below Cisco link?...
View Articlemore advanced using pipe for MORE specific output
Hi all,I am tying to get more and more specific output from command of >show interface rather than whole. I have just got the following command, it is a litte bit better than displaying...
View ArticleEX4200, PoE not working on all ports
We have a stack of four EX4200-48PX switches, running Junos 15.1R7.9. One of these switches has 31 Ruckus R710 access points patched in, the remaining 17 ports have nothing patched in. Yesterday we had...
View ArticleNot fully functional when booted from backup image
We have a a good number of EX2200 switches. We've observed issues when the switch boots from the backup partition (which, unfortunately, happens all too often when we restart our EX2200s). Things like...
View ArticleLACP scenario
Hi everyone,Please consider the following example: SW1 gig1-----------gig1SW2 gig2------------gig2 Both switcehs have been configured with lacp.LACP allows the switches to bundle the ports with...
View ArticleEX2300 cannot change root password
I have super-user rights, and go thru the motion of changing the root password, but it never changes.When I look at the config, the secret data for the password is the same as what is in all the other...
View ArticleMX Virtual Chassis
Hello everybody, I have MX480 with dual RE-S-X6-64G-BB routing engine. Also there is another MX480 with dual RE-S-X6-64G-S routing engine. Can they be combined into virtual chassis?
View ArticleNetwork Time Protocol (NTP) Mode 6 Scanner vulnerability
We just had an internal security scan run and the Nessus software found this vulnerability on our Juniper EX4200 switches running Junos 15.1R7.9. We do point all of our Juniper switches to our internal...
View ArticleEX4300 - Check-out failed for Chassis control process
Hi, I installed a pair of EX4300 a few weeks ago. Very simple setup, and using virtual chassis. Today I had to make a few changes to the configuration, but commit failed: root@tpsw01# commit fpc0:...
View Articlehow to find IP address of other end interface link connected to neighbor machine
Hi, Consider I have 2 juniper devices A & BA & B are connected with the phyiscal interface. I logged in to A device & I know the IP address on connected physical interface end.How to find...
View ArticleIs this a valid EX3400 vme port configuration
Hello,I need a little help someone to validate is this normal working configuration.The question is about the vme port of EX3400 switch (version 15.1X53-D57.3 )The topology is attached to this...
View ArticleJuniper ex4600 rack mount kit or rails .
Hi community, we have a juniper ex4600 switch in our company, it is fully functional but the problem is that the rails were lost, I tried to find rails for this switch, but in the datasheet I did not...
View ArticleIPv6 and SLAAC with static address range
Forgive me if this is a dumb question, but I'm just starting to configure IPv6 on our network and I'm working on a SLAAC configuration now. What I can't find anywhere is what can I do to reserve a...
View Article1400w PSU showing up as 1100w usable ?
All my 4300-MP switches wth 1400w power supplies show up in the power budget as 1100w pwr supplies.My guess.. The extra power is needed for the switch and it only offers 1100w to the poe controller...
View ArticleI cant create users login on ex-3400
Hi I have two ex-3400 switches configured in virtual-chassis . They are on Junos (Junos: 15.1X53-D57.3) . I have added some users login in order to ssh that switch but I am not able to access that...
View ArticlePrinter issues on EX2300
Hi, hopefully i am not the very first one in the work to have this issue. So the issue is as follows. I am busy with a project where the client is moving from cisco to juniper on core and access. They...
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