Overview

In modern multi-vendor service provider and data center networks, establishing a BGP session between a Cisco ASR router and a Huawei NetEngine router is a common operational requirement. While both platforms are high-performance routing giants, they operate on distinct operating systems—Cisco IOS XR and Huawei VRP—which can lead to configuration syntax differences and interoperability considerations. This FAQ addresses the most critical pre-sales and post-sales questions regarding BGP peering between these platforms, ensuring a smooth integration and robust routing architecture.

Frequently Asked Questions

Q1: Can I establish a standard BGP IPv4 session between a Cisco ASR 9000 and a Huawei NetEngine 8000?

Yes, establishing a standard BGP IPv4 session between a Cisco ASR and a Huawei NetEngine router is fully supported and widely deployed. Both platforms adhere to the core BGP-4 standard, making basic eBGP and iBGP peering straightforward. The main challenge is not protocol compatibility but the translation of configuration syntax from Cisco's IOS XR to Huawei's VRP, which can be easily managed by following vendor-specific command references .

Q2: What are the common configuration pitfalls when setting up BGP between Cisco ASR and Huawei NetEngine?

The most common pitfalls are syntax-related and include using incorrect commands for neighbor activation or route policy application. For example, Cisco IOS XR requires a clear "address-family" structure under the BGP process, while Huawei VRP uses a different hierarchical model. Additionally, discrepancies in default BGP route advertisement rules, such as Cisco's requirement to explicitly define a route policy to advertise prefixes, can lead to BGP sessions establishing but routes not being exchanged .

Q3: Is BGP Flowspec interoperability supported between Cisco ASR and Huawei NetEngine?

Yes, BGP Flowspec interoperability is supported, but it requires careful attention to software versions. Interoperability tests have confirmed that Huawei NE5000E and Cisco ASR9900 can interoperate, but the implementation details can differ. For instance, Cisco and Huawei use a specific NLRI format (op=0x81) for certain flowspec components that differs from Juniper. While Cisco provided special firmware during interop testing to resolve issues (integrated in IOS XR 5.3.2), it is crucial to ensure both devices are running recommended and interoperable software versions .

Q4: What advanced BGP features have been tested for interoperability between these vendors?

Extensive interoperability testing has been conducted for advanced features like BGP Segment Routing Traffic Engineering (SR-TE) and BGP-LU (Labeled Unicast). In these tests, Cisco ASR 9000 and Huawei NetEngine 8000 platforms successfully participated in multi-vendor environments. For example, a Cisco IOS XR router has functioned as a BGP controller pushing SR policies to Huawei hardware, and Huawei NetEngine routers have been validated in SR-TE per-flow traffic steering scenarios alongside Cisco and other vendors .

Q5: Are there any optical transceiver compatibility issues when connecting a Cisco ASR to a Huawei NetEngine?

Optical interoperability is not a protocol issue but a hardware specification one. As long as both devices use the same standards-compliant optical interfaces (e.g., SFP, SFP+, QSFP+) with matching parameters (wavelength, reach, fiber type), the link will come up. Cisco ASR routers typically use GLC-SX-MM for short reach, while Huawei equivalents like SFP-10G-SR should interoperate. Both vendors ultimately adhere to IEEE standards, so third-party or vendor-specific optics that follow MSA (Multi-Source Agreement) specifications will work, though using vendor-certified optics is recommended for full support .

Q6: What is the maximum throughput and routing table capacity when running BGP on an ASR versus a NetEngine?

The maximum throughput and BGP routing table capacity are platform-specific rather than vendor-specific, depending on the hardware model (e.g., ASR 9901 vs. NetEngine 8000 X8). Both platforms are carrier-grade and support full internet routing tables (over 1 million IPv4 routes). The Cisco ASR 9900 series offers high-performance line-rate forwarding, while the Huawei NetEngine 8000 series provides comparable capabilities. Ultimately, the specific throughput (in Gbps) and forwarding performance (Mpps) are defined by the line cards and system architecture of each specific model .

Q7: My BGP session establishes but routes are not being installed. How do I troubleshoot this between ASR and NetEngine?

If a BGP session is "Established" but no routes are exchanged, this is often a routing policy issue. On Cisco IOS XR, you must explicitly define and apply route policies (e.g., 'route-policy PASS-ALL' and 'default-originate' for default route announcements) in the address-family configuration. On Huawei VRP, the equivalent is using route-policy and applying it under the BGP view. Also, verify that the neighbor's 'remote-as' is correct and that any necessary 'next-hop-self' commands are configured to ensure the next-hop is reachable from the peer's perspective .

Q8: Is it possible to have the Cisco ASR advertise routes with multiple ASNs to a single Huawei NetEngine peer?

Yes, this is possible. You can configure the Cisco ASR to peer with the Huawei NetEngine using a single BGP session and advertise prefixes that originate from different ASNs. The ASR can be configured to send the original AS_PATH, or use the 'local-as' feature. The key is to configure the correct route policies to manipulate the AS_PATH attribute before sending routes to the NetEngine, allowing you to represent multiple customers or sub-ASNs over a single physical BGP connection .