Hello.
I have a question about mc-lag and rstp. RSTP is blocking Port-channel 1 on Cisco switch which is connected to two MX routers by Mc-lag link. On MX router I have configured RSTP accordig to:
http://www.juniper.net/documentation/en_US/junos13.3/topics/usage-guidelines/interfaces-configuring-multi-chassis-link-aggregation.html
(points 9, 10, 11).
Juniper support wrote to me in jtac case:
"MC-LAG provides loop-free Layer 2 network without running the Spanning Tree Protocol (STP).* Please refer the below links to configure the MC-LAG :
http://www.juniper.net/documentation/en_US/junos13.3/topics/usage-guidelines/interfaces-configuring-multi-chassis-link-aggregation.html http://www.juniper.net/documentation/en_US/junos13.3/topics/usage-guidelines/interfaces-configuring-multi-chassis-link-aggregation.html http://www.juniper.net/documentation/en_US/junos13.2/topics/concept/lag-multichassis-qfx-series-overview.html http://www.juniper.net/documentation/en_US/junos13.2/topics/concept/lag-multichassis-qfx-series-overview.html
What i want to achieve: irb.113 L3 interface is only on MX2. When connection between MX2 and SW1 will be
interrupted, traffic will be forwarded from SW1 to MX1 and then to MX2. Is it possible?
Configuration and topology:
http://pastebin.com/0CG3Bvae
Thank you in advance for help.