3Com Switch 8800 Advanced Software V5 Configuration Guide

74 CHAPTER 8: LINK AGGREGATION OVERVIEW
Service Loop Group As a Switch 8800 can accommodate different types of I/O Modules, service loop
ports are needed to redirect services between I/O Modules. Through service loop
ports, packets reaching an I/O Module can be passed to another one for being
processed. Service loop group is used to increase the throughput for redirecting
packets among I/O Modules.
Service loop group is implemented by creating link aggregation group for service
loop ports. To create a service loop group, create a manual link aggregation group
and then specify the services to be redirected for it. At present, the services can be
IPv6 unicast services, IPv6 multicast services, and tunnel services. Service Groups
IPv6 and IPv6mc are needed when mixing IPv4 modules with IPv6 modules and
IPv6 traffic needs to be forwarded thru the IPv4 module. For more information, see
“Centralized Mode for IPv6” on page 709.
When adding a port to a service loop group, make sure that the port supports the
services specified for the service loop group and meets the following
requirements:
■ The port is configured only with the physical configuration (such as speed and
duplex mode), QoS, and ACL. Other conflicting configurations, such as STP, are
not configured.
■ The port belongs to VLAN 1.
For ports that are already in a service loop group, you can perform configurations
that do not conflict with the service loop group for them, such as QoS.
Tabl e 7 Switch 8800 Options
SKU Description FA ports MPLS? IPv6?
3C17511 1-port 10GBASE-X (XENPAK) 1 No No
3C17512 2-port 10GBASE-X (XFP) 2 No No
3C17513 12-port 1000BASE-X (SFP) 2 No No
3C17514 24-port 1000BASE-X (SFP) 1 No No
3C17516 24-port 10/100/1000BASE-T (RJ45) 2 No No
3C17525 1-port 10GBASE-X (XENPAK)
Advanced
2 Yes No
3C17526 4-port 10GBASE-X (XFP) 1 No No
3C17527 2-port 10GBASE-X (XFP) Advanced 2 No
3C17528 48-port 10/100/1000BASE-T (RJ45) 1 No Yes
3C17530 24-port 1000BASE-X (SFP) Advanced 2 Yes No
3C17531 24-port 10/100/1000BASE-T (RJ45)
Advanced
2 Yes No
3C17532 48-port 10/100/1000BASE-T (RJ45)
Access
1 No Yes
3C17533 24-port 1000BASE-X (SFP) IP6 2 No Yes
3C17534 24-port 10/100/1000BASE-T (RJ45)
IP6
2 No Yes
3C17536 4-port 10GBASE-X (XFP) IP6 4 No Yes
3C17537 2-port 10GBASE-X (XFP) IP6 2 No Yes
3C17538 48-port 1000BASE-X (SFP) IP6 1 No Yes