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Questions tagged [juniper-ex]

Juniper Networks line of Ethernet switches

3
votes
1answer
24 views

Juniper EX4500 selective q-in-q

This switch supports selective qinq? For example I got 3 vlans on client port: 100, 200, 300. I need to add second tag on vlans 100, 200 but vlan 300 must run as is, without adding second tag. Is it ...
1
vote
1answer
62 views

Weird Juniper switch behavior

Weird Juniper switch behavior I have bought EX4300 and SRX300 on ebay to study it and started to read documentation. After some time i wanted to test my knowledge and configure it to test it at home. ...
1
vote
1answer
36 views

EX3300 can not use irb.x, so how to access the layer-3 address?

EX3300 can not use irb.x, I have a Juniper EX4300 convergence layer Switch, in it there are irb interfaces. such as irb.3, and if I have another EX4300 for access layer, I can set vlan l3-interface ...
0
votes
0answers
31 views

Why the ae1's `Link` is `down` but its indicator is light?

In my Juniper EX4300 I created a ae1 I added xe-0/2/3 and xe-1/2/3 to ae1, xe-0/2/3 { ether-options { 802.3ad ae1; } } xe-1/2/3 { ether-options { 802.3ad ae1; } } ...
1
vote
0answers
33 views

What's the uplink port shows in the `show interfaces terse`?

My Juniper EX4300 have four uplink port: but when I show interface, there only two xe port: Interface Admin Link gr-0/0/0 up up pfe-0/0/0 up up pfe-0/0/0.16383 up up ...
4
votes
0answers
39 views

Juniper EX4300 / MAC limiting SNMP trap

I have the following device and configuration: Model: ex4300-32f Junos: 17.3R3-S3.3 show configuration groups GLOBAL-SNMP { snmp { client-list MANAGERS { 10.8.9.0/28; } community TEST-COMMUNITY ...
4
votes
1answer
97 views

Juniper EX4200 QinQ question

newbie here with a very similar question to one that was posted a couple of years back ... only slightly different (so, as the original question was asked so perfectly, I've copied it nearly verbatim ...
1
vote
2answers
63 views

Juniper EX use upstream gateway

On a Juniper EX series how can I set the L3 IP range, but specify a gateway that is upstream? VLAN - Subnet - Gateway 10 - 10.1.10.0/24 - 10.1.10.1 20 - 10.1.20.0/24 - 10.1.20.1 If I do the config ...
2
votes
1answer
288 views

How to check the Juniper Switch's port bandwidth?

I use the CoS method limited the EX3300's switch port bandwidth to 200m. But I have a question, how to check whether it works? Is there the Juniper Switch EX3300's switch port have a bandwidth ...
1
vote
2answers
278 views

How can I set the Juniper EX3300 Switch's Interface traffic speed?

How can I set the Juniper EX3300 Switch's Interface traffic speed? Before asking this question I have attempted many methods, all fail. first of all, set the Interface traffic speed is not the ...
1
vote
2answers
328 views

Configure VLAN with DHCP traffic properly forwarded

I have a windows DHCP server in VLAN 10 and I have wireless clients in VLAN 288. The VLANs are defined in my Juniper EX-4600 and the VLANs are tagged/trunked all the way to the Meraki APs. [DHCP]---[...
2
votes
1answer
101 views

Why the EX4300 continue the system halting?

Why the EX4300 continue the system halting? In the LCD, I press to the system halt, then it last this HALTING status a very long time. so far, there take 20+ minutes at least.
2
votes
1answer
380 views

ERROR: Package signature validation failed. Aborting install. When upgrade the JUNOS

My device is EX4300. I use the bellow command for upgrade the JUNOS version by: request system software add reboot /var/tmp/jinstall-ex-4300-14.1X53-D47.3-demostic-signed.tgz I get the bellow error:...
2
votes
1answer
820 views

What's the purpose of JUNOS' sfid process?

In the last few days, one Juniper EX-2200-48P has started complaining via syslog: Jun 21 12:50:03 ex2200-b sfid[717]: TASK_OS_MEMHIGH: Using 52118 KB of memory, 103 percent of available After a ...
4
votes
1answer
210 views

Ex2300 not finishing ZTP process

I have a working Cent OS server that is giving out dhcp and is also acting as a ftp server. ZTP works as it should on EX-2200 switches but something is off when I try to perform the same process on s ...
5
votes
2answers
191 views

Juniper: WakeOnLan over 802.1x without using default VLAN

Case We have a working 802.1x configuration on all our access ports. I want to enable WakeOnLan, but have no idea, how to target computers with Magic Packet. Tests We tried to send Magic Packet ...
3
votes
1answer
577 views

EX3300: Voice VLAN stopped working after upgrade to 15.1R6.7

We have 50+ Juniper EX3300 switches with access points configured to work with dot1x and voice vlan. We also have a variety of Yealink T23G, T42G, T26G and T48G phones that worked perfectly in our ...
2
votes
1answer
50 views

RVIs and routing out of firewall

I have managed to configure a number of EX3300 switches (using virtual chassis) with vlans and the appropriate layer-3 configurations for RVIs. I can get the traffic to flow internally on the ...
1
vote
1answer
428 views

Juniper Switch - Enabling Ports?

I have a Juniper EX2200-C switch that I am trying to setup and running into issues with. Unfortunately the Juniper website is not much help. I've managed to setup the device's root login and enabled ...
0
votes
2answers
459 views

Device need Telnet to configure, but no IP is assigned

I have a UPS device connected to a Juniper EX switch. According to the UPS device documentation the device used DHCP and BOOTP to obtain a IP. This is part of a management network which doesn't have a ...
1
vote
2answers
48 views

Config history not updating on Juniper ex4200

I need to make some changes to my switch stack, so I backed up my config and compared it to the running config to double check. The two are wildly out of sync. Going to the config history in J-web I ...
0
votes
1answer
380 views

Linux LACP (802.3ad) working for ingress traffic only?

We've setup LACP (802.3ad) on our Juniper switch and a Linux host, connected to the switch with 3x 1Gbps links. We are able to download from multiple sources at a rate of 3 Gbps, but when uploading ...
1
vote
3answers
1k views

Juniper EX how to clear route forwarding table?

After layer 3 routing a large IPv6 assignment on an EX Juniper switch, the route forwarding table filled up and some entries corrupted or became otherwise invalid. We want to clear the whole table. ...
2
votes
2answers
73 views

Juniper EX uplink module for access downlinks

We have a Juniper EX-4200 (1Gbps downlinks) with the SFP+ uplink module. The switch is connected to our providers via 10x aggregated 1Gbps ports (ge-0/0/0 to ge-0/0/9). Can we connect a server to the ...
2
votes
1answer
454 views

How to get multiple uplinks on Juniper EX switch to work?

We have a Juniper EX4200. Ports 0, 2, 4 and 6 are connected to another Juniper switch. These ports are our network uplinks. All other ports are connected to our servers. We want traffic to use all 4 ...
4
votes
1answer
427 views

Juniper EX incoming packets VLAN tagged

I'm trying to configure a Juniper EX4200 switch. Usually packets are statically forwarded to me, but this time they are VLAN tagged. Here is my configuration : interfaces { ge-0/0/0 { ...
2
votes
2answers
245 views

From SFP+ to SFP + Juniper EX4200 specific question

Say we have a Juniper EX4200 with the 4x 1G SFP uplink module, with 1G transceivers, and another switch with 10G SFP+ downlinks. Can we connect the 10G SFP+ downlinks of one switch to the 1G SFP ...
1
vote
1answer
642 views

Juniper ZTP DHCP Server Setup

I am currently trying to configure DHCP as part of a ztp setup. Right now my topology is as follows: ex2200(me0,10.0.20.2)->(ge-0/0/1,10.0.20.1)srx100(fe-0/0/2,10.0.80.1)<-(eth0,10.0.80.2)centos6....
1
vote
2answers
379 views

How to configure Juniper EX switch for anti-bruteforcing?

How can I configure to secure my switch from brute force attacks via ssh? Can I configure something like Fail2ban?
1
vote
0answers
503 views

Juniper EX3300 and Q-in-Q

I have a Juniper EX3300 switch that has a 10Gbps connection to our upstream provider. Our upstream provider (lets call them Provider A) passes us various connections on tagged VLANs over this single ...
1
vote
1answer
576 views

Juniper EX4200 firewall filter applied to trunk port not matching specific VLAN

EX4200 switch has a firewall filter applied to input of trunk port. Intent is to rate-limit (police) input bandwidth per VLAN id. However the 'show firewall' command points out that policing is ...
1
vote
1answer
992 views

OSPF setup between EX2200 and EX4200

Brief description: I have two juniper switches, an EX2200 and an EX4200. They are connected physically and OSPF is in the Full state, so they each see their neighbor, but they are not seeing the ...
3
votes
1answer
136 views

Can't copy files within ERX

I use FileZilla FTP client to connect to my equipment in order to get files from there. I tried same process in my ERX, without success. Below is a view of my directory bras-2.cm#dir Please wait... ...
0
votes
1answer
305 views

How to collect core dump files in Juniper ERX

For troubleshooting purposes, I need to collect some files from my ERX.(by ftp) Below is the content of my directory ERX#dir *** Active/standby file systems are being synchronized. *** ...
3
votes
1answer
2k views

DHCP Relay for two L3 EX2200 Juniper (How many relays?)

I came accross this tutorial: Topology: [Client PC] --- ge-0/0/0 [EX Switch] ge0/0/1 --- [DHCP Server] Client PC is in VLAN 10. The DHCP server is in VLAN 20 with the 20.20.20.2 IP address. The ...
2
votes
1answer
196 views

DHCP Relay Juniper on two EX2200

I have a two EX2200 switches that are connected to each other using OSPF routing. One switch is configured as a dhcp server and gives out IP addresses to devices on local interfaces. I set up DHCP ...
2
votes
1answer
153 views

DHCP giving out addresses on only one interface, Juniper EX2200

My EX2200 is successfully giving out ip addresses over DHCP on interface ge-0/0/42. And only on that interface. Here is the config as I have it for that port, and the one next to it: ge-0/0/42 { ...
3
votes
4answers
4k views

Is Olive the same as vMX?

In the past I spun up JunOS Olive in my home lab to learn JunOS. But it looks like Juniper has something called vMX. Is this comparable to vMX? Obviously its not free, but for learning purposes (...
1
vote
3answers
2k views

Cannot commit on Junos

I am learning Junos. I applied the following command on my switch: hw_tanyu_n@yamsc-a-DC-R1R13-asw-1.cm> configure Entering configuration mode The configuration has been changed but not committed ...
1
vote
3answers
1k views

Reason to disable spanning-tree?

I inherited a small setup for a VM complex. It is centrally connected via a Juniper EX Switch Stack (as a virtual chassis). Connected to it via lag/trunks (carrying all the same vlans) are 4 Dell ...
1
vote
1answer
809 views

Juniper mirroring trunk ports

I have a virtual chassis of 2 EX4600-40f. The 4 ports (0/0/1, 0/0/2, 0/0/3, 0/0/4) where my ESX are connected are configured in trunk mode with some vlans. I would like to copy the traffic (tagged) of ...
1
vote
1answer
1k views

Juniper routing - one way communication

I have an SRX3600 and an EX2200. I can ping everything on the EX2200 from the SRX, but I can't ping the gateway (or anything else) on the SRX from the EX. Another set of eyes would be wonderful. ...
1
vote
2answers
878 views

Blocking all VLANs between Juniper switches

I have some Juniper switches (Model: ex4550-32f) connected together with trunk ports. I want to allow VLAN 6 on all below interfaces because it is the main switch and connected to other switches in ...
3
votes
2answers
2k views

Duplicate packet / ping reply in network configuration

I'm having a issue with receiving duplicate packets in my network and I'm unsure what's causing it. A simplistic explanation of what's happening is this: Server1 sends a ping request to Server2 ...
1
vote
2answers
258 views

Juniper ztp trigger system requests

I have automated my network provisioning with ztp and ansible and it's already rocking. When ztp finishes I have a working config but I'm missing 2 things: the xe-0/1/2 and xe-0/1/3 on my ex3300 are ...
5
votes
2answers
1k views

Juniper trunking with two links (not using LAG)

Some reason I'm drawing a blank on this. Let's say I have two EX switches connected together with 2 links to each other (xe-0/1/0 and xe-0/1/1 on both switches). I can easily setup a trunk on one of ...
0
votes
2answers
1k views

Route NTP traffic through Routing-Instance

Switch 2 needs to route it's NTP requests through a specific vlan that is setup on a routing-instance. Current NTP setup on switch 2 is set system ntp server 10.0.0.21 set system ntp source-...
3
votes
1answer
323 views

Segregate VLAN based on L3 subnet

I have a Juniper EX switch, which receives 3 subnets (192.168.1~3.0/24) from a untagged port of upstream switch (I don't have access to that switch). Is it possible to configure the EX switch to put ...
2
votes
1answer
1k views

Running Junos directly from a USB stick

I got a Juniper EX2200 switch which is unable to boot, prior to a corrupted flash. The JTAC support is expired and i tried almost everything to get it working again. I read an article about "Running ...
5
votes
2answers
1k views

Proper connection and VLAN configuration between Juniper EX4300 and Aruba 7010 Controller?

I have a Juniper EX4300 switch that is connected to a firewall which in turn connects to the WAN. I have an Aruba 7010 Controller that I would like to connect to the Juniper switch. On the Juniper ...