10.200.0.24 10.200.0.26 10.200.0.32 +------+ +------+ +------+ +------+ |XiAn | | SZ | |HKBR | |Canada| |Huawei+------+ +-----+ASR9k +-----+ASR9k | +------+ +------+ +------+ +------+
For the issue, HuaWei is Head, asr9k should mid and end node. And Huawei found they put the traffics to Canada by LDP label, not TE label. So traffics should arrive to HK ASR9k by LDP label, then forwarding by LDP too from HK ASR9k to Canada. That not match normal scenario.
For normal scenario, should use TE label from head to end. And after Huawei put traffics to TE LSP, the issue will recovery to normal. Refer to why Huawei send traffics by LDP, that should their issue, will fix in future by them, but even if to do that, 9k shouldn’t drop packets. We need find whether packets drop at 9k and due to label issue first. Now set up test environment in customer site. waiting update.