Known issues, Access Control Lists, Igmp Relay

BLADE OS 5.1 Release Notes

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.

BMD00098, December 2009