[j-nsp] Can per flow load-balancing result in TCP session drops?

Doug Hanks dhanks at juniper.net
Mon Jun 27 16:16:00 EDT 2011


Siva,

The MX80 is a router.  It's packet-based.  It does however have a services card that allows for some flow-based use cases.

On a side note, the J Series is both a flow and packet-based device.  If you want packet-based functionality, disable the security with "delete security; set security forwarding-options family mpls mode packet-based"  On the flipside the J Series has a software forwarding plane while the MX has a hardware forwarding plane.

Thank you,
....................................
Doug Hanks
Systems Engineer
JNCIP-M/T #1441



-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of MSusiva
Sent: Monday, June 27, 2011 8:07 AM
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Can per flow load-balancing result in TCP session drops?

Hi experts,

Is MX80 a flow based or packet based router?

With asymmetric routing, will the TCP session ever get established. Suppose
if SYN packet goes out through one interface and the SYN+ACK is received on
another interface, will this router drop this SYN+ACK as this behavior is
seen in J series routers.

Thanks,
Siva
JNCIS-M
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