Cisco Catalyst 9300L series is a staple in enterprise access networking, designed for SMBs, branch offices, and campus edge environments. Among its variants, the C9300L-48T-4X-E and C9300L-48T-4X-A are nearly identical in core hardware and software, with differences primarily rooted in regional compliance, power adapter details, and localized features. Below is a detailed comparison across 11 dimensions:
Both models share the same Catalyst 9300L hardware platform, delivering consistent performance:
Forwarding Rate: Both support line-rate forwarding up to 100Gbps (for 64-byte packets), handling high-traffic scenarios like video conferencing and file transfers for 1,000+ endpoints.
RAM: Equipped with 4GB DDR4 memory (expandable to 8GB), ensuring smooth operation of Cisco IOS XE and DNA Center management tools.
Storage: 4GB eMMC flash for system images, configurations, and logs, with USB support for external storage backups.
Verdict: No performance gap—both meet SMB network demands.
Both support 48 Gigabit Ethernet ports + 4 SFP+ ports, PoE+ (30W per port, 740W total), and key software features like IPv6 routing, VLANs, QoS, and 802.1X authentication. Differences are minor:
C9300L-48T-4X-E: Optimized for EU EMC compliance, with firmware tuned for European-frequency wireless APs (e.g., Cisco Aironet 2800i).
C9300L-48T-4X-A: Aligns with FCC Part 15 certification; early batches better support North American ISP IPoE (DHCP Option 82) deployments.
Both adopt a 1U rack-mount design (44mm height) with front-facing ports and rear power/stacking interfaces. Key differences:
Power Adapters: E uses a Euro-style round-head adapter (220-240V input); A uses a US-style flat-head adapter (100-240V input).
Certification Labels: E displays “CE” marks; A shows “FCC ID.” Some E models label local voltage (e.g., “230V”).
For IT admins and employees, both models offer identical usability:
Deployment: Quick setup via DNA Center (10 minutes to configure ports, PoE, and VLANs).
Management: Unified Web GUI/CLI interface—familiar to anyone versed in Cisco tools.
Troubleshooting: Consistent syslog/SNMP metrics for monitoring CPU, port traffic, and faults.
Only Noticeable Difference: Power cords vary by region (Euro vs. US plugs), but this doesn’t affect performance.
Hardware costs are nearly identical, but regional factors (taxes, certifications) may cause minor price gaps:
E Model: Slightly higher in Europe due to stricter EU environmental standards (RoHS), but often offset by tax incentives.
A Model: More competitive in North America, with bundled services (e.g., 1-year Cisco Smart Net support) common in dealer offers.
Bottom Line: Same value for money—choose based on regional support needs.
The C9300L-48T-4X series excels in “balanced” scenarios:
SMB Offices: 48 Gigabit ports + 4 SFP+ uplinks support 100-200 users, with PoE+ powering IP phones, APs, and cameras.
Branch Offices: Stack up to 8 units for 384 Gigabit + 32 SFP+ ports, simplifying multi-site management via DNA Center.
Education/Healthcare: 802.1X authentication secures access; QoS prioritizes video/medical imaging traffic.
Key Advantages:
Scalability: StackWise technology reduces upfront costs.
Intelligence: DNA Center automates configuration and monitoring.
Reliability: Redundant power support (optional) ensures business continuity.
Cisco IOS XE upgrades for C9300L-48T-4X models follow these steps:
Backup Config: Use write memory
or DNA Center to save settings.
Download Firmware: Get the latest IOS XE image from Cisco.com (match hardware version).
Upload Firmware: Transfer via TFTP/SCP or push via DNA Center.
Execute:
CLI: Set boot system flash:/new_image.bin
and reload.
DNA Center: Install via the “Software Center.”
Problem 1: Upgrade fails (e.g., power loss mid-process).
Fix: Boot into ROMmon (hold Mode
key), load the old firmware with boot system flash:/old_image.bin
, then retry.
Problem 2: Features break post-upgrade (e.g., PoE failure).
Fix: Check Cisco’s hardware-software compatibility matrix; roll back to a stable version if a bug is confirmed.
Problem 3: Management interface unreachable.
Fix: Verify IP settings (default: 192.168.1.1); use Console port (serial cable) to reconfigure.
The C9300L-48T-4X-E and -A are nearly identical in performance and features, with differences limited to regional compliance and minor design tweaks. Both are ideal for SMBs and branches seeking a reliable, scalable access switch—choose based on your location’s certification needs.