[j-nsp] Opportunistic ARP on Juniper MX?

2014-05-26 Thread Sebastian Wiesinger
Hello, does anyone know if Juniper MX does opportunistic ARP? Meaning, will it send out an ARP request by itself when an ARP entry expires (like Cisco does) or will it wait until it needs to resolve the ARP entry when a packet arrives? Regards Sebastian -- GPG Key: 0x93A0B9CE (F4F6 B1A3 866B

Re: [j-nsp] Opportunistic ARP on Juniper MX?

2014-05-26 Thread Mark Tinka
On Monday, May 26, 2014 09:10:20 AM Sebastian Wiesinger wrote: does anyone know if Juniper MX does opportunistic ARP? Meaning, will it send out an ARP request by itself when an ARP entry expires (like Cisco does) or will it wait until it needs to resolve the ARP entry when a packet arrives?

Re: [j-nsp] Opportunistic ARP on Juniper MX?

2014-05-26 Thread Sebastian Wiesinger
* Mark Tinka mark.ti...@seacom.mu [2014-05-26 09:18]: On Monday, May 26, 2014 09:10:20 AM Sebastian Wiesinger wrote: does anyone know if Juniper MX does opportunistic ARP? Meaning, will it send out an ARP request by itself when an ARP entry expires (like Cisco does) or will it wait

Re: [j-nsp] Opportunistic ARP on Juniper MX?

2014-05-26 Thread Prabhu Gurumurthy
Yes, juniper will re-arp after aging timer expires, default is 20 minutes. Juniper usually adds a jitter so that ARP does not expire en masse. If the ARP reply is not received, packets will be dropped unless the corresponding reply to who-has comes back Hope this helps Prabhu On May 26, 2014