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Questions tagged [juniper-junos]

A tag for questions involving Juniper Networks Operating System (Junos) software.

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Broken communication with FBF and next-table for route leaking

I have an MX960 configured as a BNG with two VRFs: one for subscriber access and another for Internet access. Some subscribers have static public IP addresses assigned by Radius, and their traffic ...
Pablo Xavier's user avatar
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37 views

Juniper Bulk CoA example for accumulation of CoA requests

I am working in BNG implementation with Juniper MX960 and I am interested in Bulk CoA feature to address accumulation of a series of CoA requests and commits all of them together. But I don't find any ...
Pablo Xavier's user avatar
1 vote
1 answer
70 views

Is it possible to accomplish Cisco IOS "prefix-suppression" functionality in Junos?

I have a network of three Juniper routers: ge-0/0/* and lo0.0 interfaces are in OSPF area 0. My goal is to have only the loopback addresses in OSPF, but as seen below, the network 10.7.0.4/31 used ...
Martin's user avatar
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How to avoid using aggregate route as a viable route for resolving BGP next-hops?

Let's say, that I receive the prefix 10.10.10.0/28 from two different iBGP peers: root@r1> show route 10.10.10.3 inet.0: 939819 destinations, 2781064 routes (939795 active, 0 holddown, 44 hidden) +...
Martin's user avatar
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1 vote
1 answer
46 views

juniper-security answer

[edit firewall filter test ] term 1 { from { source-address { 10.0.0.0/8; } } then { log; next term; } } term 2 { then { reject ; } } How is traffic, sourced ...
Marghli Dhikra's user avatar
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answer code block juniper table routage [duplicate]

want some one expert juniper help me for this question user@router> show route 192.168.100.2 inet.O: 15 destinations, 17 routes (15 active, 0 holddown, 0 hidden) Limit/Threshold: 1048576/1048576 ...
Marghli Dhikra's user avatar
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165 views

Upgrade path for QFX 13.2 to 21.4

I have a Qfx5100-48s-6q box running a software version 13.2X51-D38 that needs to be upgraded to a new version – “jinstall-host-qfx-5-21.4R3-S5.17-signed”. Any advise us on the upgrade path for this ...
user93188's user avatar
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Problem with adding bgp communities to qfx

I have a juniper QFX5100 and we have BGP with Telia/Arelion and here is our policy satements: set policy-options community Telia-Blackhole members 1299:666 set policy-options policy-statement Telia-...
Blackmetal's user avatar
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1 answer
98 views

What is "Laundry"-memory on Juniper MX systems?

When displaying the current memory usage on Juniper MX systems (running JunOS 21.4, in case it should matter), I do see an entry for Laundry. For example: > show system processes extensive Mem: ...
miho's user avatar
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116 views

Preconfigured VCF w/ QFX5100 doesn't auto-provision some vc-ports

I am currently (trying) to deploy a Virtual Chassis Fabric with QFX5100. I'm using the pre-provisioned model and got the stack working for now - however, some of the vc-ports do not auto-configure ...
Jan's user avatar
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JunOS tagging aggregate route from more specific route - bgp communities

I have a certain use case with rtbh for the following: A /32 route (say 10.1.1.1/32) is injected into the network with a specific bgp community I'd like to match the aggregate prefix that /32 belongs ...
Network Samurai's user avatar
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49 views

juniper access list for ipv6 under ex4200

I have a ex4200-48p and it is acting as my top of rack switch and i have the following firewall filter under each port : set firewall family ethernet-switching filter port24 term layer2 from ether-...
Blackmetal's user avatar
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387 views

juniper ex4200 broadcast and multicast storm control

i have applied the following configuration on my juniper ex4200-48p : set ethernet-switching-options storm-control action-shutdown set ethernet-switching-options storm-control interface ge-0/0/24.0 ...
Blackmetal's user avatar
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Juniper ex4200 neighbour discovery rate limit (IPv6)

We have a few Juniper EX4200 and they are working in layer2 , Is there anyway to rate limit the neighbour discovery on these platforms to prevent dos attacks? In ex4200 we can set mac address count ...
Blackmetal's user avatar
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115 views

Configure DHCP snooping with no option 82 on a pure layer 2 Juniper ex2300 using ELS

I have a Juniper ex2300 switch in a mostly-cisco environment (no MIST). On my cisco devices, I have DHCP snooping configured per vlan, with option 82 disabled on the access-layer switches because they ...
Cybersoldier's user avatar
3 votes
2 answers
335 views

ethernet switching table is empty | vQFX | EVE-NG

I'm new to Juniper switches. I configured vlan10 and assigned two ports to the relevant vlan. root> show vlans Routing instance VLAN name Tag Interfaces default-switch vlan10 ...
Aaqil's user avatar
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2 votes
1 answer
270 views

Juniper EX4650 pass double tags on trunk interface

Example topology: custA / custB > switch1 > EX4650 > switch2 > custA / custB custA outer tag 101  custB outer tag 102 The EX4650 should allow any inner tag on both vlan 101 and 102. Dot1Q ...
Dan's user avatar
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1 answer
381 views

The IRB.30 Interface cannot be pinged and i cannot SSH into the given IP

All configuration is done via Juniper Mist. In my Juniper EX4300-MP48 I created an interface IRB.30 with address 192.168.31.200 irb { unit 30 { description it; family inet { ...
The-IT-ID10T's user avatar
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Nested route policy failing

Any thoughts on why ::/0 is accepted in this example? Per these documents, the accept in the sub policy means it will match the condition in the parent and action in the parent will apply. But this ...
Dan's user avatar
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2 answers
179 views

ACX2100 cannot boot to new version

My customer upgrades the version for ACX2100 from 12.3X54-D34.1 to 20.4R3-S2.6. After adding software, they checked JUNOS Installation Software already 20.4R3-S2.6. vipa@BGG0333SRT03> show version |...
NHN's user avatar
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6 votes
0 answers
351 views

DHCPv6 Relay Agent on Juniper — Packets dropped: No SAFD

I tried to setup a DHCPv6 relay agent on a Juniper EX3400 switch. (SLAAC is unfortunately not enough for this use case.) While the setup of the (non-v6) DHCP relay agent worked flawlessly and was well-...
miho's user avatar
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1 answer
165 views

How do I partition my on-premises network so one part can only access the external (internet)?

Currently, our setup is the following: I need to make a change so there is no wireless access to our NAS. The Wifi "passthrough" needs to only be able to communicate with the external ...
Omroth's user avatar
  • 101
2 votes
2 answers
1k views

How do I view BGP communities of received routes in IOS XE before they go through route-map import policy?

I want to see the communities that are attached to a route when I first receive the route before it goes through the BGP import route-map. In my instance the route-map strips communities off so I ...
tcpipee's user avatar
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0 votes
1 answer
121 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 ...
Ben's user avatar
  • 157
3 votes
1 answer
381 views

Juniper SRX 340 route lookup failed

I've a strange issue on my Juniper; I've a policy to allow all traffic to a specific address behind it and, in effect, the policy works correctly. All the traffic I send reach the destination, except ...
Gianluca's user avatar
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0 answers
643 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 ...
Ben's user avatar
  • 157
0 votes
2 answers
990 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 ...
Nabeel's user avatar
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59 views

router-alert feature in DDoS prevention - MX series

I'm reading DDoS Prevention in MX series - 2nd. As mentioned in book "you can also configure whether an individual policer type should bypass that group’s aggregate policer" => I don't ...
Unstoppableee's user avatar
2 votes
1 answer
141 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 ...
244boy's user avatar
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0 votes
1 answer
2k 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 ...
aircraft's user avatar
  • 1,138
2 votes
1 answer
730 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 ...
Nabeel's user avatar
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1 vote
2 answers
610 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 ...
244boy's user avatar
  • 1,777
1 vote
1 answer
627 views

QSFP28 doesn't recognize 4x25G breakout cable and link with 4 SFP28s

So to preface, I'm not a network engineer but am somehow in charge of getting our juniper QFX5200-48y configured. The goal is to get our FS brand SPF28's and QSFP28's to talk to each other on the ...
girafferan's user avatar
0 votes
1 answer
1k views

How does JunOS device boot up ? Juniper JunOS Boot Process

Sounds pretty basic , I could no where find answer for my below questions Devices : srx 345 , ex3300 (VC) Inside a junOS device where is the image store path/.tgz , so that I can copy from one to ...
Sivagami N's user avatar
0 votes
2 answers
690 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 ...
jimmystack's user avatar
1 vote
1 answer
377 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. ...
244boy's user avatar
  • 1,777
1 vote
2 answers
610 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 { ...
aircraft's user avatar
  • 1,138
1 vote
1 answer
429 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 ...
Nabeel's user avatar
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1 vote
1 answer
1k 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 ...
244boy's user avatar
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4 votes
3 answers
1k 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?
244boy's user avatar
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1 vote
1 answer
709 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 ...
Nabeel's user avatar
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2 votes
1 answer
504 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 "...
Gianluca's user avatar
  • 371
1 vote
1 answer
65 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?
244boy's user avatar
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0 votes
1 answer
369 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]&...
aircraft's user avatar
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1 vote
1 answer
2k 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 ...
Nabeel's user avatar
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0 votes
1 answer
3k views

Understanding the Burst Size against policer for 1G/10G interfaces in Juniper MX

We are facing one confusion with regards to burst size value against rate limit or policer in Juniper MX. Need to understand two things :- (1) Is the burst size limit defined in firewall policer ...
Nabeel's user avatar
  • 1,120
2 votes
2 answers
2k 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 ...
Anton M.'s user avatar
  • 187
2 votes
0 answers
2k views

10G Interface on Juniper MX Stops Transmitting Output Optical Power

We have been facing an issue on Juniper MX series router. We have 10G interface on our router. Its does not matter whether interface is connected to DWDM or interface itself is a dark fiber. The end ...
Nabeel's user avatar
  • 1,120
0 votes
1 answer
357 views

Does JunOS breaks iBGP rules when using several routing instances?

I have setup with several routers where 1 is external eBGP router with 2 iBGP routers. Routes are coming from eBGP peer are landing to Routing-Instance Ext and after that their are moved to inet.0 ...
Tomato's user avatar
  • 123
5 votes
1 answer
914 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 ...
Geekman's user avatar
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