Questions tagged [juniper-ex]
Juniper Networks line of Ethernet switches
74
questions
1
vote
1answer
100 views
How to show a Juniper interface bandwidth usage?
I want to check a Juniper Switch's port bandwidth usage.
I tried show interfaces, but there is no current bandwidth condition:
admin@Juniper-ex3300-48t# run show interfaces ge-0/1/1
Physical ...
0
votes
1answer
75 views
Junos OS Upgrade on EX4200 Virtual Chassis
We have couple of EX4200s switches in Virtual Chassis mode running in the network. Each Virtual chassis has only 2 member switches.
We are required to upgrade the Junos OS on each member switch in ...
0
votes
1answer
43 views
Juniper Ex4200 problem with assign firewall to access port
This is my firewall filter rules :
family ethernet-switching {
filter port5 {
term port5 {
from {
source-address {
192.168.1.0/29;
...
0
votes
1answer
36 views
In IP6 fe80::8a10:8fff:feb7:1632 > ff02::2: ICMP6, router solicitation , length 16
When I use command to capture the packages of interface ae52.0 in my EX4300 gateway Switch (L3):
run monitor traffic interface ae52.0
I get many
In IP6 fe80::8a10:8fff:feb7:1632 > ff02::2: ...
0
votes
0answers
66 views
Why my ae interface Link type is down but the physical interface is up?
Why my ae interface Link type is down but the physical interface is up?
In my convergence layer Switch, I use two Juniper EX4300 devices realize the Stack:
so there have xe-0/0/x and xe-1/0/x ...
0
votes
0answers
24 views
Juniper EX Switch sending TCP reset on SSH connection randomly
So as stated in Title I'm observing that one of our switch randomly send RESET flag in TCP and ends the ssh connection in the middle and sends and Window size of 0 as well. Randomly it refuses to ...
3
votes
1answer
57 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
81 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
87 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
50 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
110 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
69 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
181 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
94 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
511 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
467 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
578 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
156 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
647 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
1k 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
293 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
254 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
724 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
52 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
518 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
498 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
53 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
451 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
2k 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
83 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
555 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 ...
3
votes
1answer
481 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
275 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
735 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
486 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
549 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
637 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
1k 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 ...
2
votes
1answer
145 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
394 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 ...
3
votes
1answer
220 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
161 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
5k 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
2k 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
885 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
968 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
...
