multicast & lsi interface
I'm having trouble following a multicast stream once the "show multicast route instance XXX group xxx.xxx.xxx.xxx" shows a lsi interface as the upstream interface. Pleas help me understand how to...
View ArticleJumbo frames between vlans
We have two EX4500s in a virtual chassis setupWe have two vlans that both have routed vlan interfacesWe would like to be able to route between these two vlans using jumbo framesCan this be done and if...
View ArticleDHCP Snooping issues on EX4200
Hello, I have an EX4200 (L3) with multiple vlans and a dhcp server attached to port 0/0/1 and a cisco 2960 access switch connected to port 0/0/48. I have vlans 5, 6 and 10 defined ob both switches....
View Article15.1 Now Recommended
15.1 is now the recommended release for most of the EX platform after 3 1/2 years on 12.3. Is anyone running 15 regularly in production and can report on general stability?
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Ex2200 lacp flap
Hello, I have a ex2200 and now version is 12.3R6.6, there's some lacp flapping suddenly happened during 1 mins yesterday, there's no something interresting in logs except LACP timeout Dec 11 19:17:40...
View ArticleMSTP with Juniper and Cisco Switch for load balancing
I am attempting to use MSTP to help with some load balancing and redudancy. I have two cisco access switches that feed into two EX4300 distrobution switches. If there is a better way to manage this...
View ArticleRSTP : Edge port with received BPDU > 0 ?
I'm running a network with 2 EX4500 as core switches and ex4200 VC as access switches.rstp is used for loop prevention.On the access switches, only the uplink pots (toward the ex4500 cores) should be...
View ArticleWhat the default action for storm-control default on QFX5100?
Hi All, May i know the default action will do by QFX5100 if storm happen at access switch that connected to QFX5100 as per below config. Is it the QFX will shut down the interface automatically even...
View ArticleScript in EX 2200
Hello, I want to know how I can do a script for all ours Switches in our network, I need to know which Switch has enabled:show configuration ethernet-switching-options secure-access-port interface all...
View ArticleL2 communication (VLAN)
Hello!It's my first post, so I'm going to say Hello to everybody! Also I'm sorry in advanced if this is not the right place (Ethernet switching) to post this message. First of all, this is my hardware...
View Articleqfx5100-48S: EVPN AND VXLAN
Hi everyone,I have a test lab,The topology diagram is as follows: qfx5100-1---------------qfx5100-2 | | | | |...
View Articledot1x works only one time - ex4200
Hello all,I have the following issue: dot1x works fine after a switch reboot. All supplicants authenticate and are placed on proper VLANS. However, if one supplicant reboots, or the cable gets...
View ArticleEX3300 Remove Line Card
We removed an unecessary switch from a virtual-chassis that was configured as a line card. It is now independent. How do you make this a member a master role to regain control of the swith? Thank you.
View Articleksyncd_select_control_plane_proto error
I am getting the below message logged every ten minutes on the backup RE of a two-member EX4200 VC. As the version is EOS (11.4R5) JTAC is not touching it. I plan to replace the switches with new units...
View ArticleVRRP and BFD for subsecond VRRP faiover
Hello, I'm trying to find a way of getting faster failover than the standard 600ms which VRRP provides. A little googleing suggests that BFD can be combined with VRRP, however I cannot find a Juniper...
View Articlerestrict access to EX switch
Hi I'm trying to implement access restriction via telnet\ssh to my switch via filter on lo0 interface as explained on this page...
View ArticleEX4550 - Hashing - LAG
Can anyone confirm if the ex4550 hashing for a LAG is 3bit or 8bit. Asking as wanting to confirm if there will be an issue uneven members in a 3,5,7 LAG
View ArticleEX4200 Hardware Difference - Old and New models
Hi All, We have some old(about 5 years) working ex4200-48T switches off the rack. Should we buy new 4200-48T switches for our new project or use the old ones? . Is there any hardware enhancement on new...
View ArticleVLAN firewall filter issue on EX switch
Hello Guys, We have two EX4200 switches installed with virtual chassis and we are configuring it as a router / firewall filter but we are facing somes issues with firewall filter that it isn't working...
View ArticleEX switch "Port high non-unicast traffic"
This is on several of our switches, the config is set to storm-control default. For instance on a 10gig SFP port, it exceeds daily. So taking out the default for storm control, would that be a better...
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