BLADE OS 5.1 Release Notes
BMD00098, December 2009
23
Known issues
The following are known issues for BLADEOS 5.1 on the 1/10Gb Uplink Ethernet Switch Module.
Access Control Lists
When an Access Control List (ACL) is installed on two different ports, only one statistics
counter will be available. The GbESM does not support two different statistics counter for one
ACL installed on two different ports.
The ACL filters for TCP/UDP work properly only on packets that do not have IP options.
When configuring an ACL to set 802.1p priority for in-profile packets, and updating the DSCP
field using TOS bits for out-of-profile packets, the out-of-profile packets will have also the
802.1p priority set as defined in the in-profile setting.
Although the management port can be configured for port filtering option, actual port filtering
will not occur, because the system filters out the management VLAN.
IGMP Relay
When having joins from multiple VLANs, and the multicast data transmitter is on a VLAN that
did not receive any joins, multicast data is routed only if the flood option is disabled using the
/cfg/l3/igmp/adv/flood d
command.
If an IGMP v2 joins an IGMP group on the same port where an IGMP v1 join has already been
issued, the software will default to the IGMP v1 timeout value.
Interoperability with Older Hubs
The command-line interface might display link up and link down messages continuously for an
external port that is connected to certain older hub models configured for 100 Mbps halfduplex. The
display might show link up erroneously. This behavior has been observed when connecting the
GbESM with the following devices:
NETGEAR FE104 100 hub
SBS 1000Base-T NIC
3Com Linkbuilder FMS100 Hub 3C250 TX/I
3Com SuperStack II 100TX 3C250C-TX-24/12
Nortel Baystack 204 Hub
If the GbESM is connected to an Alteon Application Switch which requires a link speed of 100
Mbps half-duplex, then enable auto negotiation on the GbESM port with port speed=any,
mode=any, fctl=both, and auto=on.
