Static IP settings do not work on the 8x50 or AP7250 Access Points. (28529)

The configuration of static settings including VLAN tag, WX IP, WX name, AP IP and AP IP mask are not supported on the AP8750, AP8250, or AP7250.

Switching and Port IssuesPort Mirroring is not active after the switch is rebooted. (29684)

Port mirroring configuration cannot be saved and is not retained through reboots of the WX switch.

Router redundancy protocol on intermediary devices between WX switches in a Mobility Domain can interfere with communication among the switches. (16910)

If the Mobility Domain contains intermediary switches or routers that use a router redundancy protocol, WX switches that communicate through those intermediary devices might lose communication with one other due to the way some router redundancy protocols handle MAC addresses. If this issue occurs, log messages appear periodically on the seed WX switch indicating that member WX switches are entering or leaving the Mobility Domain.

Set the FDB timer (default 300 seconds) and the ARP timer (default 1200 seconds) to the same values on the WX switches. 3Com recommends using 300 seconds as the value for both timers. To set the FDB timer, use the set fdb agingtime command. To set the ARP timer, use the set arp agingtime command.

Known Problems

21

Mixing Autonegotiation with full-duplex mode on a link causes slow throughput and can cause a WX port to stop forwarding. (26276)

3Com recommends that you do not configure the mode of a WX port so that one side of the link is set to autone- gotiation while the other side is set to full-duplex.

Although MSS allows this configuration, it can result in slow throughput on the link. The slow throughput occurs because the side that is configured for autone- gotiation falls back to half-duplex. A stream of large packets sent to a WX port in such a configuration can cause forwarding on the link to stop.

Antenna sensing has been deprecated from system software. The antenna configuration is the authoritative source to enabling external antenna operation on the AP, even if the external antenna isn't actually connected. (34904)

FDB entry is not cleared when tagging mode on a port changes. (44970)

When the tagging mode on a port is changed, learned entries in the fdb are not cleared. As a result, connectivity may be lost. To work around this issue and restore connectivity, clear the fdb manually.

Client connecting to local switched untethered AP causes Mesh APs to time out. (44982)

In some configurations, a client connecting to a mesh AP that also has local switching enabled will cause other mesh APs in the network to time out and reboot.