Getting MAC addresses using SNMP on EX2300/EX3400

In this post we are going to see how you can extract the content of the MAC address table using SNMP on EX2300 or EX3400. This is different than some other switching platforms like EX4200, EX4500, EX8200. To accomplish this, different Juniper enterprise MIBs must be used. Let us see how we can achieve this…. Keep reading »

Excluding interfaces from IRB State Calculations

As you know, in order you have an IRB up, you need to have at least one interface up on the VLAN for which the IRB is created. This condition is sometimes forgot by engineers troubleshooting why an IRB or RVI or SVI(in Cisco terms) is down. By default all interfaces part of the VLAN… Keep reading »

Workaround to enable DHCP Snooping in Juniper ELS CLI

DHCP Snooping allows a network device to monitor the DHCP messages received from untrusted devices connected to the network device. The DHCP Snooping is enabled per VLAN and the router or the switch where DHCP snooping is enabled checks the DHCP messages received from untrusted devices from that VLAN and builds the DHCP snooping database… Keep reading »