QFX5100 VCF Backup RE dropping out
I have a VCF of all qfx5100 with 14.1X53-D35.3 code. suddenly a commit cant reach the backup RE.seems to be running the VCF protocols but comms are down? rebooted the member, zeroised the member and...
View Articleqsfp+ SR4 distances when splitted into 4x10GBaseSR ifs
Hi, I'm getting a little confused with max distances with qfx qsfp+. QFX-QSFP+-40GbaseSR4 are given for distance of 100m over om3 mmf, 150m over om4 MMF.I get it that we can configure the QSFP+ as a...
View ArticleEX3300 virtual chassis
Hi, Is there any chance to configure two ex3300 switches in virtual chassis , while first one is EX3300-24 port and the second one is EX3300-48 port ?
View ArticleQFX5100 Stops passing IP traffic
Hello Posting here in a run up to open cases left and right. Last friday I had the following issue occur which we only resolved by taking the effected switch(s) out of the network. We are in the...
View ArticleVRRP Groups EX4300
Dear All I had an issue about a month ago with a EX4300 Virtual Chassis which Juniper Support helped resolve (2 thumbs up to Juniper Support to get the issue fixed). During the support call the...
View ArticleVirtual-chassis qfx5100 Switch Oversubscription
Hi All, During my studies about QFX-5100-48T virtual chassis I noted that there is a kind of lack in the documentation about the switch over-subscription's topic. The 2 sets of built-in interfaces on...
View ArticleQ-in-Q to virtual router instance?
Hi together We have a customer with different sites which are connected through a QinQ network and all these sites need a local router/switch. Thus we use some Cisco switches to do the double tagging...
View Articleinterface-range config inheritance change
There are large ex4300 stacks with hundreds of access ports. The bulk of these ports are access ports on a single VLAN, but there are exceptions sprinkled about. With Junos 13.2, the exception...
View ArticleQFX .vs EX DHCP Command syntax
This code does not work in our EX-4600, is there a way to make it work.? ## ## Warning: configuration block ignored: unsupported platform (ex4600-40f) ## dhcp { maximum-lease-time 1000;...
View Articlechanging temperature thresholds on EX switch
Since we wanted to receive alarms from Junos Space / Network Director about tempretures on EX switches , its possible . But if you want to receive temp. alarms once switch reaches specific temp. , then...
View ArticleWhat is different between helper bootp and dhcp-relay?
HI,I have EX2200 switch and my necessary configure dhcp relay option. In documentation I found two commands for it, helper bootp and dhcp-relay. In documentation not indicate exactly distinction...
View ArticleConverting media types between sa EX2200 and Cisco
Hello I have a situation. On our floor I have 1 SRX220. It connects to a Cisco 3560 switch with mm fiber. From the Cisco siwtch it has to convert it to a single mode fiber to an EX2200 switch that...
View ArticleEX9200 SF2 Module interface
Hi, I have a question for ex9200 sf2 module.On the sf2 module, I could see two sfp interface beside External clock interface.I know that it can't be used as an Ethernet port, but I'm not sure where...
View ArticleVirtual Chassis LACP flap (GRES / NSB ?)
Hello,I have a topology composed of 6 EX3300 in VC.1 is master , one other is backup (botj have same weight, 129). The four others are linecard. I've done an upgrade from 12.3R9 to 12.3R12 few days...
View ArticleTrunk between Juniper EX4200 & Cisco 2960X disconnect randomly?
Hi and thanks in advance.I have this issue.(both Juniper & Cisco stack or virtual chassis) Juniper EX4200 CORE with Ge1/0/8 trunk port with Vlan1 added as native (in order to "talk" with...
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VLAN ID .vs IP Segment
I want to use the same vlan-id and vlan or irb in both switches. Is this possible with out any alarms or errors.?
View Articleqfx 5100 48 t 1G interface configuration (ge-x/x/x)vs 10G xe-x/x/x
dear community, we're integrating a virtual chassis formed by 4 Juniper qfx, 2x5100 48 t and 2x qfx 5100 96s. for the 48T ones, most of the acces ports are meant to be 1G ones UTP When configuraing...
View ArticleEX4300 with active QSFP+ DAC cables
Is it possible to use the active QSFP+ DAC cables (7 or 10 meter) with the EX4300 switches for VC connections? In most Juniper documention, it shows that the active cables only work with the QFX...
View ArticleEX4200 Firewall Filter on A VLAN
I have an EX4200 running as a switch/router. I have a few Servers on a VLAN. I am looking to create a Firewall Filter and apply this filter to the VLAN with the Servers. The goal of allowing RDP...
View ArticleNot able to access hosts in particular L3 subnet
I have Juniper 4500/4200 switches; 4500 configured as L3 and multiple L3 subinterfaces are created and tagged across 4200 switches in differnet locations. My problem is that I am not able to access...
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