Questions tagged [juniper]

A tag for questions involving Juniper Networks hardware or software.

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22 views

What's the meaning of these interfaces' prefix?

When I watch juniper tutorial time at 10:22, there have Services Interfaces introduction: but in my mx480 router, there have several interfaces I don't know prefix meaning. lt-0/0/10.6 ...
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2answers
118 views

Why my MX480 have 6 FPC slots, however the document say only support 3?

In Juniper PFC document: The maximum number of supported FPCs varies per router: MX480 router—3 FPCs but in my MX480, why there have 6 FPC Slots. admin@MX480-RE0> show chassis fpc ...
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1answer
31 views

My Juniper router do not have j-web configuration

I follow Juniper docs: I want to set up the j-web. but in my Junos do not have set system services web-management http. admin@MX480-RE0# set system services ? Possible completions: <[Enter]&...
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+200

EVPN MAC Advertisement route not installed to L2 forwarding table

I have a VLAN-based EVPN connecting two sites in a lab environment based on the network topology described in the DAY ONE: USING ETHERNET VPNS FOR DATA CENTER INTERCONNECT book: For some reason, it ...
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1answer
21 views

How to find invalid sessions on Juniper SRX 5800 series Firewall

In Juniper SRX 5800 series Firewall , when we run the command 'show security flow session summary node 0' , we see that it shows large numbers of sessions as invalidated. But we don't know ...
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1answer
20 views

What exactly does a Juniper PE use to find the correct transport LSP for the L2 circuit(Martini) neighbor?

Let's say, that I have a following simple L2 circuit(Martini) configuration: root@PE4> show configuration protocols l2circuit neighbor 192.168.2.2 { interface ge-0/0/5.777 { virtual-...
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1answer
87 views

How does a Juniper PE associate frames from the CE with correct route in <VPN_name>.l2vpn.0 table in case of Kompella L2 VPNs?

Let's say, that I have a following simple BGP-signaled L2VPN configuration: root@PE4> show configuration routing-instances vpn-b { instance-type l2vpn; interface ge-0/0/0.515; route-...
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2answers
96 views

Junos “request system software validate” safety

Just want to clarify: is it safe to issue the command request system software validate /var/tmp/image.tgz on a production Juniper MX router not during maintenance? Can I break something with this ...
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0answers
25 views

GRE IPIP on QFX3500

We have 2x QFX3500 in Virutal CHassis mode, so : can we lunch 2-4x GRE or IPIP tunnel ? onyl 2x tunnel is active and 2x tunnel is in standby mode, that 2 active tunnel has around 80-90mbps IMIX ...
5
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1answer
136 views

Finding the right BFD timers between Juniper QFX5110 and Cisco ASR1000

I am trying to configure BFD for both OSPF and BGP on the Cisco ASR1000 (non X) and Juniper QFX5110. The problem is that the QFX doesn't officially support BFD timers lower than 1000ms without ...
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94 views

Juniper MX: how to populate VRF RIB with EVPN Type 2 MAC+IP routes

I have a Juniper MX router at the edge of EVPN/VXLAN domain. Let's suppose that MX performs routing only, no any kind of switching/bridging instances on it. I want to exchange EVPN VRF routes (type5 ...
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2answers
35 views

2 AS in the same box JunOS

Today we have an MX204 and we announced our AS using Juniper, but we also have partnership with another internet provider that has another AS. This other AS has much less client and a much smaller ...
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1answer
88 views

What's the meaning of `unit 0` and `family ethernet-switching`?

What's the meaning of `unit 0` and `family inet`? With the above question, I learned the meaning of unit 0 and inet. So what does ethernet-switching mean? root@test> show configuration ... ... ...
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1answer
105 views

Juniper keeps a received BGP prefix in hidden state when the BGP next-hop is overwritten to a static route

I have a routing policy named rtbh configured as an ingress policy for a BGP peer: root@PE3> show configuration policy-options policy-statement rtbh term ipv4 | display inheritance no-comments from ...
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1answer
62 views

is it possible calculate a IP of Transit Traffic's rate in Juniper port mirroring?

In Juniper Router MX480, we can configure the port mirroring of a transmit port. then, is it possible calculate a IP of Transit Traffic's rate in Juniper port mirroring? I mean, I can configure B port ...
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3answers
68 views

Policy Based Routing by Interface and IP

Is it possible on Juniper or Cisco to configure PBR where it matches on an ingress interface AND a source IP address? My scenario traffic flows are as follows: Router1 > Router2 > WAN_Optimiser &...
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1answer
65 views

ip-prefix-routes with vxlan encapsulation on Juniper MX80 / MX104 17.3R3

I want to check whether this configuration is acceptable by MX80 or MX104 Junos 17.3R3 (JTAC recommended version)? Example configuration: set routing-instances VPN100 instance-type vrf set routing-...
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1answer
27 views

Using XFP-10G (120 KM Range) on Juniper MX routers

Hi everyone, We recently installed a new 10G XFP optics module in Juniper MX router. As per the customer , XFP supported range is 120 KM and it is from some third party vendor named 'menara'. Menara ...
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9 views

qfx3500 wrong fan report? [duplicate]

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 failed, is ...
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1answer
35 views

qfx5300 fan issue

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 the normal speed they have 1unit free space from up ...
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1answer
35 views

BGP “protocol next hop” resolves to different next-hop address than the same IP using ISIS

I have a BGP-learned prefix 130.130.0.0/24 with protocol next hop 10.0.2.5: root@r2> show route 130.130.0.0 detail inet.0: 60 destinations, 61 routes (57 active, 0 holddown, 4 hidden) 130.130.0.0/...
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1answer
20 views

QFX3500 RTG Question

i have 2x ae interface in my QFX3500 and i want to use ae1 as primary and ae2 as backup and here is my config : set protocols rstp interfaces ae1 disable set protocols rstp interfaces ae2 disable ...
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1answer
25 views

Juniper QFX3500 performance

We want to use a pair of juniper qfx3500 in virtual chassis mode and we have around 1000x SVI with 7 bgp peer and no full table and around 20gbps bps and 8m pps, can qfx3500 handle this amount of ...
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44 views

How to connect EVPN DC Fabric to MPLS IP VPN Backbone

Let's suppose that we have a common Clos EVPN/VXLAN-based DC fabric with IP gateways on leaves (anycast gateways). Also there is a lot of different IP VRFs inside a fabric where end hosts reside. What ...
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2answers
129 views

RE Protection vs DDOS Protection in Juniper MX series routers

Hi Everyone, Need to know the clear differences between RE protection and DDOS protection in Juniper MX. Both are used to save routing engine from depletion of resources. As mentioned in Juniper MX ...
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1answer
40 views

Virtual Chassis Setup in Juniper EX4200 Using Mixed Interface Types

We want to setup Virtual Chassis using 2 x Juniper EX4200 switches. In case of Virtual Chassis for EX4200 , we have to use 2 x VC cables (connected back to back) between 2 x Ex4200 switches along with ...
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3answers
161 views

What are the Major Differences between Juniper EX4200 vs Juniper EX4300?

Can someone please explain that what are the major differences between Juniper EX4200 and Juniper EX4300 switches? Both are standard Juniper Ethernet switches but is there any situation where EX4300 ...
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1answer
47 views

mx480 “PEM 3 absent” alarm

I have an alarm showing up on an MX480 after removing unused PEMs: "PEM 2 Absent". The mx480 only has 2 FPCs populated, which keeps it fully redundant with 2 PEMs online (each zone is 25%). ...
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1answer
87 views

With regards to Juniper Networks , how does 'targeted-distribution' knob works?

Can someone please explain how does the knob 'targeted-distribution' works in Juniper MX routers. We created aggregated Ethernet (AE) links on our Juniper MX router acting as BNG. However , after ...
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2answers
56 views

Is there a way to know the length of the cable used between the connected SFPs on a switching/routing device?

I have connected two Juniper routers with a QSFP28 optics and I need to find out the length of the optical cable I have used. Is there a command to check that in the router?
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1answer
110 views

How to use the TCP traceroute in Juniper?

How to use the TCP traceroute in Juniper? In Juniper OS I only know traceroute ip_address I don't know how to traceroute a destination with TCP protocol. is it possible to implement it?
2
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1answer
158 views

Juniper vMX Routers can't ping each other in GNS3

I have a couple of VMX Routers setup in GNS3 that are directly connected on their interface, ge-0/0/2 and they can't ping each other. PFB configuration. I can't seem to find the problem! UPDATE: Added ...
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1answer
42 views

Make eBGP and iBGP equal in Juniper MX204

Apologize for the dumb question, I come from the server world. Our network admin is on holiday and I'm filling in. For the sake of simplicity, we have a fairly symmetric traffic pattern, what goes up ...
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1answer
39 views

Show 'all' routes to a given prefix on Juniper Router

Forgive me if I'm not using the correct terminology here but I'm on a Juniper MX204 router, call it router A. I'm receiving full table from my ISP. I do a show route, i.e. show route 1.1.1.1 and I ...
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2answers
133 views

Migrate from Cisco HSRP gateway to Juniper VRRP Gateway

We have a pair of Cisco Nexus 3548 switches setup with HSRP acting as the network gateway for each of our network segments in a datacenter/VMware environment. We wish to replace the Cisco Nexus ...
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1answer
81 views

Juniper QFX Site to Site VPN

Im trying to setup a site to site vpn between two Juniper QFX5110's. Each end of the link is on the same subnet (so directly connected switches over dark fibre). I have configured each physical ...
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1answer
119 views

Fixing an SSL problem in Juniper SRX

We do have a problem; we setup a used Juniper SRX3400 Cluster hoping to move our configuration from old SRX3400 Cluster to new one (for some reason), however everything works but we cannot make HTTPS ...
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1answer
49 views

PEM Modules Redundancy in Juniper SRX3600 series Firewall

We have Juniper SRX3600 running in our network. At the moment only 2 x PEM Modules (AC Power Supply) are installed in the chassis while other 2 x PEM are not. This is shown below from the output of '...
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1answer
42 views

Why does Junos create two entries in LIB for single tag- one with “S=0” and other with implicit “S=1”?

In the penultimate LSR there are following two entries for label 301040: root@r2> show route table mpls.0 protocol rsvp mpls.0: 14 destinations, 14 routes (14 active, 0 holddown, 0 hidden) + = ...
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1answer
30 views

Why are the LDP installed LSPs not seen in the output of “show mpls lsp” in Junos?

I have established a LDP session between routers r1(lo0.0 has 192.168.1.1 configured) and r4(lo0.0 has 192.168.1.4 configured). According to show route table inet.3 192.168.1.4 in r1 the BGP prefixes ...
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1answer
36 views

Juniper / SRX-100 / Repurpose old device / Disable DHCP?

I have an old Juniper SRX-100. I want to re-purpose it for my network. I need to extend the network in a new location, so I need more ports. I could use a simple switch, but I have this laying ...
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2answers
74 views

juniper router /var directory is full , deleting .tgz file in root directory

i need to free some space on my juniper router , in the root directory when i use >ls -lash command i see a .tgz file which is 405 M , my question , if i delete this will it cause any problem ?
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1answer
22 views

Juniper MX: NTP broadcast on two VRFs with the same addressing

In Juniper, NTP broadcast is set at system level, so two VRFs cannot use the same addressing and use NTP broadcast at the same time. Is there any alternative?
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0answers
52 views

Juniper MX - ERPS over MPLS CCC or VPLS

I wonder if there is a possibility to implement an ERPS Ring over a few Juniper MX nodes that are interconnected via MPLS only? The only idea i have to configure this is using lt - interfaces with a ...
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1answer
49 views

What are the differences between injecting the default route to IGP using a static route or using a generated route?

Let's say, that I have a following network topology: isp_router[t1-0/0/0.0] <-> [t1-0/0/0.0]ospf_asbr I want to generate a default route for IGP in ospf_asbr router. One option would be a ...
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1answer
747 views

JunOS: How to copy the config file to TFTP server?

Model: j6350 JUNOS Software Release [12.1X46-D65.4] Is there an easy way to copy the config file to TFTP?
2
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1answer
78 views

How does ISIS find a next hop address for a prefix learned by ISIS?

I have two Juniper routers connected like this: r1[ge-0/0/2] <-> [ge-0/0/3]r2 Both ge-0/0/2 in r1 and ge-0/0/3 in r2 do not have a family inet configured: root@r1> show interfaces ge-0/0/2 ...
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2answers
136 views

Can't log in after admin password change

I reset my admin password with below command: #Set system login user admin authentication encrypted-password <new password> But now i can't login to my device, what can be the reason?
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0answers
25 views

Does Junos convert routing policy into binary tree?

Let's say, that there is a following simply route policy in Juniper router: root@vmx> show policy test Policy test: Term 1: from route filter: 10.10.10.7/...
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2answers
48 views

How can I tell which prefixes are being advertised?

Forgive me if this is a dumb question but I'm relatively new to the carrier networking world. We own a block of IP addresses, say a /18 and we advertise various /20s, /24s, /23s, etc all over the ...

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