Hybrid ports are supported on Ethernet ports, where they provide the capabilities and features of access and network mode ports on a per-VLAN basis. The following services support hybrid port functionality: Epipe PW, Ipipe PW, IP-VPN, VPLS, and IES.
For ingress traffic, QoS and traffic management on a hybrid port functions in the same way for access and network port modes. Refer to the 7705 SAR Quality of Service Guide, ‟QoS for Hybrid Ports on Gen-2 Hardware” and ‟QoS for Gen-3 Adapter Cards and Platforms” for details.
Network VLANs on a hybrid port provide OAM down MEP support, as well as port loopback support (in line mode with latched timers only).
The following hardware supports hybrid ports:
6-port SAR-M Ethernet module (except for the Fast Ethernet ports (ports 1 and 2))
6-port Ethernet 10Gbps Adapter card
8-port Gigabit Ethernet Adapter card
10-port 1GigE/1-port 10GigE X-Adapter card (only in 10-port 1GigE mode)
Packet Microwave Adapter card (only in Ethernet port mode (not mw-link mode))
7705 SAR-A Ethernet ports (except for the Fast Ethernet ports (ports 9 to 12))
7705 SAR-Ax Ethernet ports
7705 SAR-M Ethernet ports
7705 SAR-H Ethernet ports
7705 SAR-Hc Ethernet ports
7705 SAR-Wx Ethernet ports
7705 SAR-X Ethernet ports
In some scenarios, combining the access and network capabilities under the same port is beneficial. A typical scenario is shown in Figure: Hybrid Port Application, where a single port hosts both access-side services and a traffic management model together with network-side IP/MPLS routing and switching capabilities simultaneously.
In this scenario, a network interface is configured to ensure connectivity between the cell site 7705 SAR and the aggregation site 7705 SAR. The network interface is used for all IP/MPLS traffic and is bound to VLAN-1. Another VLAN (VLAN-2) is configured to bind the management traffic of a microwave radio (an MPR-e) to an access-side service such as an Ethernet PW or VPLS. For security reasons, many mobile operators prefer to transport management traffic of network elements under a service construct as opposed to basic GRT-based routing. To accommodate this preference, an access-side service and a network interface can be configured to coexist on the same port when the port is configured for hybrid mode.
