Technical Specifications
A Port is the high-speed Ethernet interface that connects to the Megaport network. It is configured as an 802.1Q VLAN trunk to support multiple Virtual Cross Connects - each presented as a unique VLAN.
These tables summarize the technical specifications for Megaport services:
| Interface Speed | Interface |
|---|---|
| 1 Gbps | 1000BASE-LX (10km; duplex on SMOF) |
| 10 Gbps | 10GBASE-LR (10km; duplex on SMOF) |
| 100 Gbps | 100GBASE-LR4 (10km; duplex on SMOF) |
| Service Attribute | Service Parameter/Value |
|---|---|
| MAC Layer | IEEE 802.3-2002 |
| Maximum Ethernet Frame Size (MTU) | VXCs support an Ethernet MTU of 9100 bytes. MCRs support an IP MTU of 1500 bytes. MVEs support a VXC Ethernet MTU of up to 9100 bytes; however, the supported IP MTU depends on the MVE vendor and the configuration. For details, contact your Megaport Account Manager. MVE internet connectivity is limited to an MTU of 1500 bytes. IX and many CSP ports do not support jumbo frames, but all support the standard MTU of 1500 bytes. |
| VLAN Ethernet Type | 0x8100 |
| Q-in-Q (802.1ad)A technique used by OSI Layer 2 providers for customers. 802.1ad provides for both an inner and an outer tag whereby the outer (S-tag) can be removed to expose the inner (C-tag) tags that segment the data. | Supported |
| CoS Level | Standard |
| Unicast Frame Delivery | Deliver Unconditionally |
| Multicast Frame Delivery | Deliver Unconditionally |
| Broadcast Frame Delivery | Deliver Unconditionally |
Layer 2 control tunneling
| Protocol | Action |
|---|---|
| STPSpanning Tree Protocol., RSTPRapid Spanning Tree Protocol., MSTPMultiple Spanning Tree Protocol., PVST+Per-VLAN Spanning Tree and Per VLAN Spanning Tree Plus Protocols. | Tunnel |
| PAUSE (802.3x)Ethernet pause frames allow for a temporary stop in data transmission. | Discard |
| LACP (802.1ax/802.3ad)Link Aggregation Control Protocol. | Discard - see link aggregation note below. |
| Link OAMOperation, Administration, and Maintenance link fault maintenance. | Discard |
| PNAC (802.1x)Port-based network access control. | Discard |
| E-LMIEthernet local management interface. | Tunnel |
| GARPGeneric Attribute Registration Protocol. | Tunnel |
Note
Link aggregation is supported using Link Aggregation Control Protocol (LACP). You can use LACP on an individual interface if you plan to add interfaces in the future. Link aggregation is supported locally by enabling LACP when creating a Port, but LACP is not carried across a VXC. For details on Link Aggregation Groups, see Creating a Link Aggregation Group.
Note
Megaport polices traffic to the committed information rate (CIR) of the ordered VXC speed. Megaport does not shape customer traffic. You can configure your own shaper if required; however, do not exceed eight megabytes for the committed burst size (CBS).