I'd like to know more about LAG+ECMP as well. You can't really use LAG+ECMP on EX3300 for instance. If you have 2x10G LAG uplink on which you're doing ECMP. Traffic will eventually be load balanced over the 2 LAGs thanks to ECMP but traffic will not be load balanced within the LAG members.
2013/7/24 Phil Bedard <[email protected]>: > This is unrelated somewhat, but what are the current LAG member limits > as well as ECMP limits? Any restrictions on LAG+ECMP? > > phil From: Sam > Sent: 7/24/2013 8:46 > To: Bouzemarene, Farid (ATS) > Cc: [email protected] > Subject: Re: [j-nsp] EX4550 version > Hi Farid, > > From an old case I had open with Juniper: > >>The EX4550 has an ARP table of maximum 8k entries. >> These entries are tracked in the kernel through something called tokens. >> Each ARP entry is a token. >> >> Because we have only 8k tokens available, from here we have the maximum >> number of ARP entries. >> >> However, because of how the chipset of EX4550 is designed, the MPLS LSPs are >> also making use of the same tokens. >> But each MPLS LSP is using 8 tokens. Therefore, 1000 LSPs would use all >> tokens and no ARP can be learned. >> >> The token usage is scaled up by the number of ECMP next-hops. So 1 LSP with >> 4 ECMP next-hops will take 1*8*4=32 tokens. > > -- > sam > > > On 24 Jul 2013, at 11:28, "Bouzemarene, Farid (ATS)" > <[email protected]> wrote: > >> Hello, >> >> Can you clarify the MPLS limits ? >> >> Thx >> >> ----- Message d'origine ----- >> De : Sam [mailto:[email protected]] >> Envoyé : Wednesday, July 24, 2013 10:39 AM >> À : Luca Salvatore <[email protected]> >> Cc : [email protected] <[email protected]> >> Objet : Re: [j-nsp] EX4550 version >> >> I used the 12.3R2.5 for quite some time now without any issue. The platform >> has its limitations (especially related to how MPLS is handled), but if >> you're just using it for L2 or basic L3 it works just fine. >> >> -- >> sam >> >> On 24 Jul 2013, at 03:27, Luca Salvatore <[email protected]> wrote: >> >>> Hi All, >>> >>> Just got a couple of new EX4550 switches... current recommended version is >>> 12.2r2.5 >>> But I just saw tha the 12.2 train is up release 5.3. >>> >>> Just wondering what the rest of you guys are running and if you have any >>> horror stories. >>> I'm not doing VC with these guys, they are going to be a pretty simple >>> layer 2 aggregation type switch. >>> >>> Thanks. >>> >>> _______________________________________________ >>> juniper-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/juniper-nsp >> >> >> _______________________________________________ >> juniper-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/juniper-nsp > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
