question about QFX routing
Hello,we are using Mikrotik CCr1072 and a hp dl380 g9 with 2x e5-2680v4 with VyOS and both are acting as routers, but when we have many flows or connections it causes that we faced high cpu usages, so...
View ArticleNumber of license needed on Virtual Chassis
How many enhanced license need when two Ex4300 configured as VC ?
View ArticleQFX5100 to Cisco UCS 40GB QFSP+ Wont Come Up?!?!?! HELP
I need the communities help desperately. I have a QFX5100 connected directly to a Cisco UCS Fabric Interconnect 6332 via 40gb QFSP+ cable. I have no link light, zilch, nadda but the QFX sees the gbic...
View Articleshow chassis routing-engine in VC only shows one RE (Backup one)
Hi, I have a 3-member VC of EX4300 running Junos 17.3R3-S4.2 as follows: Preprovisioned Virtual Chassis Virtual Chassis ID: 61a1.80b7.80fa Virtual Chassis Mode: Enabled Mstr Mixed Route Neighbor List...
View ArticleDDOS protection violation on QFX switch
Hello!Very often we get a violation of default DDOS protection rule for 'exceptions' on FPC1 on our QFX10008 box:{master}[edit] minotaur@core-sw1-sp.ki# run show ddos-protection protocols exceptions...
View ArticleEX4600 Halt / Power Down
I just started using EX4600s, and have found an interesting anomaly. If I issue the command "request system power-off" or "request system halt", the systems stops, but I do not get the prompt "hit any...
View ArticleHow to configure Firewall FIlter on QFX 5110
Hi Team, I have Core switch QFX 5110, and a lot off vlan has been configure. Vlan user and Vlan Server. I need apply firewall filter on this switch,- certain vlan user need to block from access to vlan...
View ArticleRe: Recommended Juniper switch and router for a home lab
OK, can't figure out how to start a new thread so hopefully somehow, people will see my question(s) here . . . .Attached is a MS Word document showing my progress in using the CLI to configure my...
View ArticleQFX5120-48Y VC-port with different speed
Dear All, i need help to change the speed of vc-port to be equal, could you please help us. lab@QFX-ACCESS-1# run show virtual-chassis vc-port...
View Articleex4200 tcp mss
Hello,We have some ex4200 as top of rack switch so i want to know is there anyway to set tcp mss on them?these switches are acting as layer 2 only between my rack and core,thank you.
View ArticleXSTP : Interface xe-6/0/29 is not enabled for Ethernet Switching
A551384@UKLB-RMG-S00-VCF-S01# commit check[edit protocols rstp]'interface'XSTP : Interface xe-6/0/29 is not enabled for Ethernet Switchingerror: configuration check-out...
View ArticleHow can migrate broadast and multicast storm control from cisco to juniper...
Dear AllHow can migrate broadast and multicast storm control from cisco to juniper QFX5100&QFX5120 cisco configuration :storm-control broadcast level 1.00storm-control multicast level...
View ArticleELS switch EX4300 dot1q tunneling HELP!
I can make this work on non-ELS switch(ex3300) but not on my ex4300... dot1q-tunneling { layer2-protocol-tunneling { all; Will this work?? Objective is to have vlan transparent on...
View ArticleMigrate Cisco STP to juniper
Dear All, we need to migrate these cisco configuration , to juniper configuration: spanning-tree uplinkfast!errdisable recovery cause udlderrdisable recovery cause bpduguarderrdisable recovery cause...
View ArticleEX4200 running recommended 15.1R7-S6 unable to install J-web due to low free...
Hi! Once in awhile I bump into customers that use JWeb and would like to have the full JWeb application, not just the light version called "platform" that's included in the Junos images. To make your...
View ArticleQFX5100 Support instance-type no-forwarding or not supported
Hello all, could you please QFX5100 Support instance-type no-forwarding or not supported ?? or supported with license ?
View ArticleMake differenet ospf Process using QFX Virtual chassis
Dear All, we need to migrate cisco switches to juniper QFX but I don't find the feature instance-type (no-forwarding), to make different process in OSPF , now I have to make it using instance -type...
View ArticleHow can make netflow in Juniper QFX
Dear All, How can make netflow for the following information: Netflow Data Export enabled Exporting flows to 10.16.16.2 (3322)Exporting flows from 10.16.16.15 (61111)Version: 5Layer2 flow creation...
View ArticleConfiguration archival using host n routing-instance
Hi.I have two ex4600 that are running 18.4R3-S3 and I have activated the management routing-instance mgmt_junos.I have got it to work with RADIUS and SNMP without any issues, but when I'm trying to add...
View ArticleJunos OS upgrade for EX switches.
Hi all. Currently I'm in the process of upgrading EX3300/4300/4600 switches(some in virtual chassis) to new Junos OS listed in the download section. Most of the switches haven't been upgraded in a few...
View ArticleQuestion on MSTP regions.
Hi. Is the MSTI information of one region present in the MST BPDUs of another region? Here I have two Regions, each with several MSTIs. EX1----EX2------------EX3----EX4Region A...
View ArticleDHCP option 82 relay: QFX switch does not insert client´s MAC address
Hello team:I am testing a QFX 5110 switch that I configured as a DHCP relay for PCs that request IPs to a DHCP server located one hop across this switch.I am interested in the switch inserting option...
View ArticlePortfast
INFO:Model: ex2200-48t-4gJunos: 15.1R7-S1 I want to enable portfast on interface beside trunk portBut after my test only 2s difference.Portfast enable: 26sPortfast disable: 28s ?Any miss in my...
View ArticleEX4300: Traffic drop issues
We have a Layer 2 customer NNI terminating on one of our switch gig port. Our customer is reporting a high packet loss on circuits terminating on this port on NNI. Our setup has customer A end on...
View ArticleEVPN Loop protection
Hi I am looking at an EVPN design that has the potential risk for the introduction of external links between attached CE devices. I have been looking at this rfc...
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EX3300 VC after upgrade to JunOS 12.3R12-S17 Lost remote access
Hello,This evening we upgraded our EX3300 VC to the latest JunOS 12.3R12-S17 since then we have lost remote access via SSH to our Switch. Other user logins are not functional and throw the same...
View ArticleNSSU and Pre provisioned VC requirement
Hi everybodyhttps://www.juniper.net/documentation/en_US/junos/topics/task/installation/ex-series-software-upgrading-nssu-fixed-virtual-chassis-cli.htmlAs per above link:Preparing the Switch for...
View ArticleUpgrading JUNOS without no-copy on EX SW?
Hi everybody,On SRX we have without no-copy option during software...
View ArticleEX4600
Hello,Shall we determine the license on purchasing EX 4600 in other words is the license come by default with the device isn't the advanced feature license ?another inquiry: Does its ports support...
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I please need assistance for basic EX2200 routing with an existing telecom...
HiIm familar with switching topics, but I don't get forward in a simple "home configuration" topic with an existing telecom router.I don't want to change the existing telecom router but I want to use...
View ArticleQFX5100-48S-6Q
Hi, I can see only active ports on QFX5100 through "show vlans" operational mode cmd. What about if I want to see the ports that are not UP but configured under the VLAN for QFX5100? I recently...
View Articlepacket buffer for EX3300 / EX4300/ NFX-250-S1
Hi, can someone let me know what the packet buffer sizes are for the EX3300, EX4300, and NFX-250-S1 devices? Can the default buffer sizes on these boxes be increased utilizing the q-pic-large-buffer...
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Network loop detection options with EVPN/VXLAN
Hello, We are currently in the progress of deploying a EVPN/VXLAN (Spine-Leaf) architecture in our datacenters. This used to be a flat layer 2 network with seperation of networks by using VLANs. One...
View ArticleEX4200 VC won't commit after a member core dump
I've got a 3 member virtual-chassis EX4200 that won't commit its config. This morning, member0 rebooted and dumped core immediately after a commit was performed. Console showed a lot of this,...
View ArticleEX 4200 in virtual Chassis keeps rebooting
I have a EX 4200 in a Virtual Chassis that keeps rebooting itself every 15 -30 minutes with Last reboot reason 0x2:watchdog tried restarting both the nodes so as to reset the routing engine demon but...
View ArticleSNMP version from V2 to V3
We are planning to upgrade SNMP version on Juniper switches from Version 2 to Version 3.Can you please suggest some standard config on juniper mx switch ?Details :SNMP ver 3SNMP User 1:- Username :...
View ArticleVerify private isolated vlan on EX3400.
Looking for command/verification parity between EX3300 & EX3400 when displaying the forwarding table to determine if a host has been added to the isolated pvlan. EX3300:EX3300> show...
View ArticleTraps on a EX-2300 switch - BPDU - how to send a trap on enable
We are working on getting notifications for ports that go into a BPDU state when a loop happens. And once again the newer EX-2300 switches are causing issues. (I really hate how inconsistent these...
View ArticleDrops on Output Errors - EX3400
Hi all, I have a server connected to an EX3400. The server is at 1g/Full-duplex (autonegotiation). However, I am seeing the following errors Input errors: Errors: 0, Drops: 0, Framing errors: 0, Runts:...
View ArticleQuestion on storm control
Hi everyone. https://www.juniper.net/documentation/en_US/junos/topics/concept/rate-limiting-storm-control-understanding.htmlAccording to the documentation above:"A traffic storm is generated when...
View ArticleQFX5100 GigabitEthernet (SFP-T) LED Status and Chassis hardware absent.
Hello. On qfx5100-48s switch LED status and Chassis hardware status absent after upgrade JunOS starting from version 19. For example, with version 18.1R3-S6.1 - LED Status is blinking and "show chassis...
View ArticleQFX - ip helper - Requires explanation
Hi everybody, I do understand why a lot of people would prefer working on Cisco. I need my client to boot from my PXE server on another subnet and I spent my day searching how to do it ... With a...
View Articleinit: %AUTH-1: getty repeating too quickly on port /dev/ttyu1, sleeping 30 secs
It would seem the config file needs to be corrected in the build. So this will need reapplied after a reboot.Ive seen this on 20.1R1-S3.3 and 20.2R1-S2.1Here is my quick fix. run start shell user...
View ArticleRSTP and BPDU Block-On-Edge
Hello colleagues, According to my understanding and reading about configuring rstp on Juniper interfaces: if bpdu-block-on-edge is configured:- When BPDU is received the port will be blocked.-It should...
View ArticleQFX3500 Performance Question
Hello,i want to use 2x QFX3500 as virtual chassis as my core switching and i have following featurs :10-15gbps bps6m pps8-9 BGP Peers with no full tables,10k Routes in worst case40-50k mac address in...
View ArticleStacking EX4650 with EX4600-40F?
Hello, I was wondering if there is a way to stack an EX4650 in a mixed virtual chassis with a EX4600-40F. I was reading this document where EX4650 is group with QFX. Thank you....
View ArticleJunos CoS Classification
I am reviewing the JNCIE-ENT self study bundle and am confused by some CoS configuration. The examples given guide the user through creating both dscp and ieee802.1p classifiers. Then they are...
View ArticleSymetrical port mirroring
Say I wanted to tap my inet port for a firewall poc... will analyzer work for this, or do I need to use firewall filters?
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why does my qfx3500 fan fail every 1-2month ?
Hello,I have a 2x QFX3500 in virtual chassis mode and every 1-2 month one of my Fan trays showed as failed and everything is ok , Fan trays are spining at normal speed they have 1unit free space from...
View Articleqfx3500 false fan report
Hello,we have 2x qfx3500 in VC and since last week it shows chassis #1 fan tray 2 (management fan) is Failed then today we replaced it with a healthy management module but it still showing it as...
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