Uruhu's den

In latest available software 1.4.8.2 ERPS(G.8032v1) works fine.

Chinese researchers have built the world’s fastest supercomputer, which is almost 50 percent more powerful than its predecessor.

It's very exhaustive article about subj.

note: as far as I understand juniper support g.8032 only for MX-series.

Amsterdam, 18 October 2010 – The Number Resource Organization (NRO) announced today that less than five percent of the world’s IPv4 addresses remain unallocated. APNIC, the Regional Internet Registry for the Asia Pacific region, has been assigned two blocks of IPv4 addresses by the Internet Assigned Numbers Authority (IANA). This latest allocation means that the IPv4 free pool dipped below 10% in January, just nine months ago. Since then, over 200 million IPv4 addresses have been allocated from IANA to the Regional Internet Registries (RIRs).

The NLB default setting is unicast mode. In unicast mode, NLB replaces the actual MAC address of each server in the cluster to a common NLB MAC address. When all the server in the cluster have the same MAC address, all packets forwarded to that address are sent to all members of the cluster. However, a problem with this configuration is when the servers NLB cluster are connected to the same switch, you cannot have two ports on the switch register the same MAC address. NLB solves this problem by masking the cluster MAC address. The switch looks at the source MAC address in the Ethernet frame header in order to learn which MAC addresses are associated with its ports. NLB creates a bogus MAC address and assigns that bogus MAC address to each server in the NLB cluster. NLB assigns each NLB server a different bogus MAC address based on the host ID of the member. This address appears in the Ethernet frame header.

Pretty good switch for FTTx access. Adult feature set, reliable hardware implementation, 4 combo GE’s and pitiful price less 270$.
Last software Release notes:

[Fast Ethernet Switch ES3528M/ES3552M-V1 Firmware Version 1.4.8.2]: Fast Ethernet Switch ES3528M/ES3552M-V1 Firmware Version 1.4.8.2

This we can see advanced options as Selective QinQ. Our choice!