real ARP / CAM limits on Huawei CX600?

Anyone have any good info on how many ARP entries one of the Huawei CX600 routers can take? http://www.huawei.com/en/products/data-communication/metro-services-platform... I will be passing about 1000 L2TP tunnels to a router before it, and the subscriber network that will be hitting the interface is about 30K people at any given time. I'm hoping that it's cool ARP-wise and that the bridging that's done internally doesn't break (i.e. Huawei's equivalent to a CAM table) -- Also on LinkedIn?  Feel free to connect if you too are an open networker: scubacuda@gmail.com