Look into documentaion for ERX (8.2.x train). I think they are suggesting a weird trick with etherchannels and then they relay on access switch to decide which E120 to bundle into (http://www.juniper.net/techpubs/software/erx/junose82/swconfig-physical/html/ethernet-config15.html#1017884).
Interesting thing is a new VSS-1440 from Cisco that enables two boxes to be single etherchannel device. I guess that it will take a while for them to have a stable IOS code. Regards, Bostjan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alex Lemk Sent: Wednesday, November 21, 2007 6:40 AM To: juniper-nsp@puck.nether.net Subject: [j-nsp] ME design from JNPR Hi, Our company is going to deploy ME network for providing broadband services for residential customers. JNPR proposes the design with few MX480 used as a core and E120 as a BRASes. This model looks like a BRAS centric, because all customer ME rings will be connected to E120 and all traffic (including VoD,Multicast and Business) will flow through the BRASes also. During the design analyze I found few possible issues, which were not highlighted by JNPR: - All customers are connected to four E120. There are not topology redundancy, i.e. each ME access ring connected only to single E120. If this E120 fails, then all connected customers will lost their services. JNPR claims that they know how to make topology redundancy with addinf second BRAS, but couldn't explain how to provision it :) Has anybody seen such configuration before? - Another question is ISSU support. JNPR claims again, that their BRASes have a support of this feature, but I didn't find any mentions about ISSU in JunOS documentation. Is it true ? Is it full ISSU with upgrades between major releases ? - Is there another well known weaks of such design ? - I didn't find public reports about MX480 and E120. Can somebody unicast me about his experience with these boxes ? ==== Alex _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
