Hello Everyone. We are migrating our core switches from Nortel 5500 to VSP 7200 Series. For nortel switches we've used OSPF. For VSP's we wanted to use Fabric . we've configured 2 VSP's with MLT between them with IS-IS. we've connected the new cores to old cores by a trunk port with a Management VLAN. From the new switch i am able to ping to other side of the old cores and all the IPs. So i've created a new VLAN in new cores. by using the access port with the new VLAN, i am not able to ping to the other side of the old core. I can only ping the new cores ?? Could you please someone help me out. Thank you in advance.
Best answer by Desiboy2019
Thank you for your response. We have vIST b/w two new cores. The problem was solved after we did the ospf redistribution for IS IS in the new core switches. Thank you.