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Questions tagged [juniper]

A tag for questions involving Juniper Networks hardware or software.

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oversubscription ratio network design [duplicate]

Can some one explain with an example what exactly is oversubscription ratio in networking? Where is it used? How do we calculate this value? Could you please provide any detailed example to explain.
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1 answer
33 views

Looking for more info on SNMP v3 Traps in Junos

I have a customer requirement where I need to be able to have Junos Space Network Management Platform be able to modify the severity of snmp traps on our routers and switches. So first I am trying to ...
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3 votes
1 answer
66 views

Juniper MX L2 policer over-policing small frames

Our network is currently going through a certification, and we're seeing some odd issues with the policer. We have 2 MX240 routers set up with MPLS/RSVP/IS-IS with a Martini-Draft l2circuit configured ...
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1 vote
1 answer
45 views

Juniper Core and Access Switch best practice

We have Juniper 14x EX4200 as access switches, and 2x EX8208 with virtual chassis configured between the 2 EX8208. from the access switched EX4200 we need 2 links.. one for the core A and second for ...
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2 votes
2 answers
274 views

Do Juniper l2circuit services (ccc) support a mismatched encapsulation type?

I am building an l2circuit ccc (draft-martini) between an EX4500 and an MX204. The issue is that I need to have mismatched l2circuit encapsulation-type on either side. The East-coast EX4550-32F (Junos:...
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0 votes
1 answer
361 views

Meaning of import or export in Juniper routing policies

What exactly is happening to the junos ospf protocol and junos routing instance when one executes these commands? set policy-options policy-statement POLICY-STATIC term TERM-STATIC from protocol ...
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2 answers
62 views

Juniper EX Switch as router with transfer network for upstream network

So im new at juniper and networking. On my Juniper EX4550 switch i want to setup a transfer network to my upstream provider. So my upstream provider assigned a /30 subnet for the transfer network: ...
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0 answers
94 views

Juniper SNMPv3 Issue with SRX and EX devices; no traps received by Junos Space

I've been seeing an ongoing problem with Juniper EX4300s and SRX 345 and 1500s. The problem that we continually see is that our monitoring servers stop receiving traps from these devices. I've had ...
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  • 157
3 votes
1 answer
121 views

how to configure dnsmasq client-identifier for juniper prefix host-name

I have a Juniper switch that has a dhcp-client configured like this: show interfaces irb unit 0 family inet dhcp client-identifier { prefix { host-name; } } I ...
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  • 171
1 vote
1 answer
62 views

QFX5100 question about load balance

I have a QFX5100 with 4x IP Transits (4x 10G) and I do not have bgp full table from them, is there anyway that I load balance my outgoing traffic? because with default route I can only force them to ...
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1 vote
1 answer
49 views

QFX10002-36Q Full BGP Question

I want to use a QFX10002-36Q with 4x Full table and 2x IXP and total received routes from all of them will be around 3.6-4 Milion routes, QFX10002-36Q datasheet said that this switch can hold 10M RIB ...
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2 votes
0 answers
149 views

Storm control problem with Juniper switch configuration (EX2300)

I am new with Juniper and generally new with switch configuration. Probably screwed up a lot but anyways, I will share my configuration right after I say what I want. I am getting Internet on ...
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2 answers
194 views

What services does MIB2D Daemon provide with respect to Juniper MX?

With respect to Juniper MX , can someone please explain what services does mib2d provide? There are many processes running on the Juniper MX depending on the services configured. These processes can ...
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1 vote
2 answers
134 views

discover neighbor on juniper switch despite blocked port

OS: JunOS 19.3 Hello all, I have an unusual problem. I have two juniper switches (A) and (B) that are connected on multiple ports I'm aware that this makes no sense for networking. This setup is not ...
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  • 171
2 votes
1 answer
96 views

QinQ on EX4200 with arbitrary C-VLAN

Trying to setup an ethernet link from CE located in building A to CE in building B. Customer may or may not tag it's frames sent over the link. Here's the setup I am trying to use +----+ +-------...
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4 votes
1 answer
502 views

Juniper - minor host 0 /var partition usage is high

Currently running a EX4300 switch. We seem to be low on space on fpc0. I have already run the request system storage cleanup all-members (only cleaned up a few megabytes). I have cleared the WTMP file ...
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1 answer
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How to judge whether a Juniper device is a PPC platform device?

I know there is noun PPC platform devices of Juniper, I want to know how to judge a Juniper Device is a PPC platform devices? Is Juniper MX480 a PPC platform device?
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3 votes
1 answer
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How do I export the config from a Juniper mx80

So I have been tasked with swapping an older Cisco router with a Juniper Mx80. I have a copy of the config from the Cisco device. The Mx80 was being used before so I want to wipe it and setup with the ...
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2 votes
1 answer
69 views

Is it possible to limit the configuration rollback count in MX-series?

I tried set system max-configuration-rollbacks in mx480, but it shows unsupported platform . ## ## Warning: statement ignored: unsupported platform (mx480) ## max-configuration-rollbacks 25; is there ...
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0 votes
1 answer
295 views

How to check the disk partitions usage of juniper device?

In this article : https://kb.juniper.net/InfoCenter/index?page=content&id=KB33032&cat=ROUTER_PRODUCTS&actp=LIST root@PE1:/var/home/labroot # gpart show -p => 34 62533229 ada0 ...
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2 votes
1 answer
124 views

Avoiding FPCs rebooting during RE switchover on Juniper EX8200 Switche

We have Juniper EX8208 chassis based switch running in a production environment. The switch has 2 REs running in active and standby role with RE0 being the primary routing engine. The device is ...
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1 vote
2 answers
165 views

Can I delete the /var/rundb/private directory?

under my Juniper MX480. /var/rundb/ the private directory occupy a large size, root@LA-MX480-RE0:/var/rundb # du -cks * | sort -rn 16691128 total 16275464 private 74976 lr-juniper.db 74912 ...
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  • 1,737
0 votes
1 answer
126 views

EX4200-48T power Consumption

I read Juniper documents but i could not find how much power does Juniper EX4200-48T consume? can anyone help me? thank you.
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4 votes
1 answer
1k views

Juniper "show route receive-protocol bgp" output meaning

When you show the received route from a specific neighbor in BGP with a Juniper, the output is the following : show route receive-protocol bgp X.X.X.X inet.0: V destinations, W routes (X active,...
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2 votes
0 answers
31 views

No entry in the multicast RIB while PIM join is present

I have a router which receives multicast traffic from the source over a multicast LSP(signaled by LDP): root@PE3> show pim join detail Instance: PIM.master Family: INET R = ...
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0 votes
1 answer
53 views

Juniper vMX router silently drops SSM traffic

I have a Juniper vMX router with two interfaces: ge-0/0/0.0 facing the multicast sender and ge-0/0/2.0 facing the multicast receiver. The router receives multicast packets addressed to 232.1.1.1 on ...
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2 votes
1 answer
117 views

What could prevent active routes from being transferred into Junipers forwarding table?

In a setup with two routers and two upstreams, I've stumbled over an issue that for IPv6 routes only, none of the active paths are installed into the forwarding table of one of the routers (called ...
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  • 131
2 votes
1 answer
61 views

Transporting TRILL over Juniper QFX5100

I've got 2 Brocade VDX switches setup using VCS and want to add another 2 switches to this group, but when connected to each other over a Juniper QFX5100, they won't see each other. The Brocade ...
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  • 121
0 votes
2 answers
158 views

PVLAN on juniper- native isolated VLAN & trunk

I'm trying to use PVLAN to isolate devices (servers) on a L2 network from each other. However, these devices are currently sit on trunk ports, because they have VLAN-aware IPMI interfaces. My config ...
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1 vote
1 answer
121 views

How do I rename a Junos BGP group?

Is it possible to change a special place in Junos rather than delete? In my case I want to change the ebgp-AS1009 to ebgp-AS23100, as far as I know only can delete the group ebgp-AS1009 then re-set. ...
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1 vote
1 answer
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What determines if a Juniper router is a route reflector client?

When I read bgp router reflector document: You see the topology is this: You see the Router A B C are in one cluster, D E are not clients of it. but how to configure to become this? I compared with ...
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4 votes
1 answer
29 views

Why test routing policy do not match in vMX?

This is my routing-policy: policy-statement rp-add-as-path-3times-local-as { term prefix1 { from { route-filter 1.1.1.0/22 orlonger; } then { as-...
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  • 1,737
1 vote
2 answers
206 views

Questions about logical-systems of juniper

In my Juniper MX480, the logic-systems config is below: [edit] logical-systems { r1 { interfaces { ge-0/0/0 { unit 0 { family inet { ...
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1 vote
1 answer
218 views

With reference to Juniper MX , what's the difference between Bridge Domain and Learning Domain?

I am trying to understand the difference between bridge domain and learning domain. I have tried to read through documentation and Juniper MX series book but no success. Need to understand the ...
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1 vote
1 answer
143 views

How to import a file into Junos main config file?

How to import a file into Junos config file? there is a case, I have a long prefix-list in config file: set logical-systems LR6-1931 policy-options prefix-list C20060 11.92.0.0/20 set logical-systems ...
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4 votes
3 answers
543 views

Why eBGP don't need config local-address?

There is a manual for me to learn Junos. you see the external peer configuration, there is no local-address option, but internal has. why eBGP configuration do not need it?
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1 vote
1 answer
249 views

CB fabric links require upgrade/training after adding New FPC in Juniper MX480

We are running a Juniper MX480 router is a production environment. Due to increase in traffic trend , it was required to installed new FPC 'MPC-3D-16XGE-SFPP' into slot 5 of MX480. Before the addition ...
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  • 1,058
1 vote
1 answer
55 views

Why the route comes from different AS?

Before, I know the AS path of BGP properties, such as the 200 100i means the route originate from AS100, use network import the route and through AS200, however in my case: admin@MX480> show route ...
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  • 1,737
1 vote
0 answers
34 views

Redirect Junos IP public -> IP private

we have an MX204 here that works as our BGP, border router and it is gateway of a service that has private IP, I need to access this service with private IP outside our network, you can tell me if I ...
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2 votes
1 answer
262 views

Juniper SRX Management Redirects

I've a Juniper SRX 340 Cluster (15.1X49-D70.3) on which I have some trouble with the Web management GUI. Since some time, when I try to access the Web board, I get the error "...
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1 vote
1 answer
26 views

what's the differences of two `filter` under `edit firewall` in junos?

I found there are two places of filter under firewall, [edit firewall filter filter-name] and [edit firewall family inet filter filter-name]. what's the differences of them?
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0 votes
1 answer
39 views

Is it only one Active route for a special destination?

When I read juniper document about show route: I show route IP: admin@MX480> show route 14.104.112.1 inet.0: 837234 destinations, 1784889 routes (832157 active, 0 holddown, 862249 hidden) + = ...
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0 votes
1 answer
253 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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2 votes
2 answers
470 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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0 votes
1 answer
111 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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4 votes
0 answers
199 views

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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  • 1,285
1 vote
1 answer
637 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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  • 1,058
2 votes
1 answer
187 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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5 votes
1 answer
210 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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  • 1,285
2 votes
2 answers
680 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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