ARP packets tagged on an access port
Hi, all,I thought I understand what an access port is, i.e. ethernet frames exchanged on an access port is untagged, but monitor traffic clearly shows the frame is actually tagged, how did this work at...
View ArticleStorm control actions
I understand that it is possible to specify boardcast bandwidth limits on a per interface basis, however is it also possible to configure different actions on a per interface basis? In addition to the...
View ArticleOn switch EX2300 there is failure of the virtual chassis?
EX2300-VC mib2d[4488]: SNMP_TRAP_LINK_DOWN: ifIndex 650, ifAdminStatus up(1), ifOperStatus down(2), ifName ge-1/0/29 Jan 6 08:13:25 EX2300-VC mib2d[4488]: SNMP_TRAP_LINK_UP: ifIndex 650, ifAdminStatus...
View ArticleEX Switch Losing ARP Requests
SRX <--> EX1 <--> MX <--> EX2 <--> ESXi <--> Workstation I am able to ping from the SRX to the MX interface facing the SRX and to the MX interface facing the workstation...
View ArticleTrunk between EX and SRX, native VLAN incompatibility?
I'm trying to set up a trunk between an SRX and an EX with the SRX acting as a sort of "router on a stick" (i.e. both subinterfaces on the trunk are configured for family inet and are routed ports)....
View ArticleEX230048P Dropping computers
Hi therehas anyone ever had issues with a computer that suddenly drops off the network and will not connect to the internet? Could the mac tables be corrupt? Any thoughts or experiences would be...
View ArticleBPDU's not sent on ae interface
Hi,I've configured a standalone EX2300 with an ae interface, which connects to an EX-series virtual chassis.This switch only has one ae uplink (with two interfaces), no other uplinks to any other...
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Unable to load junos on vqfx-pfe
Good morning, I am running the the virtual appliance of the QFX10000 Switch, the name of the image is cosim-18.4R1.8_20180212.qcow2. I am able to login into the Unix shell by using username = root,...
View ArticleDSCP marking on the edge
I know this topic has been discussed ad nauseam, so I'm mostly asking about peripheral questions here (and I have read the applicable documentation on the subject). First, I'm setting up an EX to...
View ArticleUnable to upgrade EX3300 stack members to JunOS 12.3R12.
Hello everyone,Yesterday I tried to upgrade our EX3300 stack with Junos 12.3R12. The current fw is 12.3R6.6. I have downloaded fw to: /var/tmp/jinstall-ex-3300-12.3R12.4-domestic-signed.tgz on master...
View ArticleBPDU hanadling on a port with rstp disabled (per port)
Hi, Lets assume that a switch has RSTP globally enabled, but on some ports it has RSTP disabled (set protocols rstp interface <name> disable).What happens when it receives a RSTP BPDU on one of...
View Articlelayer2-protocol-tunneling lacp Decapsulation does not work on EX4500
Hi I have an issue where LACP traffic is being punted to the route processor on EX4500 even though layer2-protocol-tunneling has been enabled on the relevant VLAN. I have tried this with the trunk port...
View ArticleEX4600: IPv6 multicast traffic causing all IRB interfaces to become unresponsive
Hi,I'm hoping that before I contact support, someone could maybe guide me to the right direction over this thing, as I'm not sure whether I'm just not understanding some fundamental aspect of the box....
View ArticleSRX1500 cluster issues
Hello, Model: srx1500Junos: 15.1X49-D110.4 I run a chassis cluster of 2x SRX1500 devices and monitor two interfaces (one from each node) in redundancy-group 1: set chassis cluster redundancy-group 1...
View ArticleEX4300 crash while attempting to bring up 10G interface
Hello, I was attempting to bring up a 10G interface on Model: ex4300-48t and JunOS: 13.2X51-D26.2, noticed that the box crashed and generated a core-dump: /var/tmp/pfex_junos.core.0.gz The 10G...
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EX2200-C won't boot.
I have a 2200-C that will not boot. It looks like it is going into activating the factory configuration and then nothing. Unfortunately, all I have is a picture of the error message. Sorry, it's not...
View ArticleEX3400 crashes after 4 days up
Hi,I have 4x Juniper EX3400 in a virtual chassis:1x EX3400 with POE3x EX3400 without POE Since mid december 2019 i have to reboot the chassis after 4 days uptime -> SSH & WebInterface is not...
View ArticleMAC pause frames are increasing on some ports of EX-3400
Dear Team, We have EX-3400 devices as a access layer switches.DHCP is configured in CORE devices(CISCO).When we connect end devices(PC,laptops,IP phone), we are unable to get DHCP IP addresses due to...
View ArticleCreate VC and add new switch to existing single switch stack
Hello,Looking for the best way to go about this. I have a single ex2300 in production now, and I need to add another switch to that stack. I want to create a VC and join this new switch to it, just not...
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