configure uplink ports as VC ports
Hello Juniper community how can I use the uplink ports 0 and 1 as a VC ports I know that the ports number 2 and 3 are by default the VC-port but my clients request to use the ports 0 and 1 as VC-ports...
View Articlecan't ping between 2 MC-LAG
Hey junos I have 2 EX9200 that connecting togther MC-LAG i created a Vlan named it managmet and give it ip on both EX9200 the issue i cant ping each ip from EX9200 to another but i can when i connect...
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Migration to a new core issue
hello guys I am trying to Migrate old cores to EX9200 core as mentioned in the picture belowi connected the old cores with the new one through trunk to expand the network and start Migrating the...
View ArticleMSTP
WELCOMEI HAVE THREE QUESTIONS: WHY A COMMAND :show spanning-tree interface msti 1SHOWS ALL ACTIVE INTERFACES ON EX2300, WHEN I ADD ONLY THREE IN MSTP INSTANCE 1 ? THERE IS POSSIBLE TO DISABLE MSTP...
View ArticleEX4600 recommanded frimware standard or service?
Hi, Guys I was looked at topic of Junos recommanded software version. But I found the release type is "standard/service". They are different as 14.1 and 17.3. I am confused that which version I have...
View ArticleQOS config for EX switches
Hi All, 1)Can someone please have a look at the config and please confirm if this will honor DSCP markings from endpoints on the EX switch. 2)Also can this config be applied to interface range ? 3)...
View ArticlePersistent MAC Causes connection issue in the same VLAN
Hello guys, I'm using EX2300 ELS with the latest version 15.1X53-D59.3. I found an issue about persisent MAC learning which causes connection issue between endpoints in the same VLAN. Here is part of...
View ArticleEX2200 I would like to set 4 ports for WAN usage
I have EX2200 configured with some vlans but I would like to sacrifice 4 ports be configured as "unmanaged" to work with WAN ISP - I need extra 4 ports for that purpose so I can connect 3 device and...
View ArticleQFX5200 Virtual Chassis ports
Hi Community, I am very confused. Here is a switch that is full with 100GE ports, and I can use only the 40GE ports for the VC.Can I use QSFP28 ports as Virtual Chassis ports on QFX5200-32C? Or can I...
View ArticleVlan hoping
Hi all I have a weird issue, I have an ex 3400 where I have setup an access port to be member on vlan 25 only, without enabling voice vlan. Behind this access port I have another L2 switch where I have...
View ArticleLayer 3 irb issues
Hi all,When an irb.10 is setup lets say with subnet 10.10.0.0/24 and I setup manually on my pc an ip address 100.195.0.10.Port where my pc is connected to is setup as access and member of vlan 10.I...
View ArticleJuniper EX DHCP Relay
Hello, I am trying to get DHCP relay to work with multiple subnets on an EX4200 switch. set interfaces vlan unit 12 family inet address 192.16.108/25 primaryset interfaces vlan unit 12 family inet...
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ex2200/3300 VOIP phone does not DOT1x with pc plugged in
Hello We have both ex2200 and ex3300 this is happening on. If a voip phone is plugged in and PC behind it, the PC with auth dot1 x and the phone will not, we can see the phone in lldp but the mac...
View ArticleConfigure 40G ports EX4300-24P
Hello, I have some scenario - I need to connect two switches over 40G ports from Juniper EX4300-24P (Rev.A). Can I use four ports in backside EX4300 for this or this 40G ports only for VCP? If I can...
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EX4300 Q-in-Q + common trunk (ELS)...how to ??
Hello everyone! I've been struggling with ESL on the 4300 trying to mix a normal vlan trunk with QinQ configuration.I need to configure a normal trunk between two EX4300 but, one of those vlans in the...
View ArticleQFX5100 - EX4300 VCF topology - spine/leaf or mesh
I'm getting set up to configure two pair of EX4300-48T and QFX5100-48S. My question is how the topology can work. We'd prefer to set them up in a full mesh - and it seems to be suggested as possible...
View Articlejuniper ex3400 stack and network testers
So we have a large location where we rely on fluke testers to identify which port a particular network jack is connected to. For some reason tests are returning port numbers with values greater than...
View ArticleNeed to block internet traffic in particular port in qfx 6k series
Kindly help with sample configuration
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QFX10k Major alarm FPC 0 Errors
Hi all;We have QFX10002-36q running 15.1X53-D62.5 version, we some strange logs and major alarm on FPC 0 as you can see below, have you already seen this issue, how to solve it ? is it a juniper bug ?...
View Articleip fabric design
Hi All, I have a general question about capacity planning when it come with deploing an IP Fabric scenario:Assuming I have: - qfx5200-32c -> 32x100Gbps interfaces -> Spine- qfx5200-48y ->...
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