Installation guide

Release Notes for Catalyst 6000 Family Software Release 5.x 31

Resolved Caveats in Software Release 5.2(1)CSX

• The supervisor engine software incorrectly allows conﬁguration of an MSM as a SPAN

destination port. When conﬁgured as a SPAN destination port, the MSM ignores the SPAN

trafﬁc. If you conﬁgure an MSM as a SPAN destination port, remove it from the destination port

list with a set span disable mod_num/port_num command. This problem is ﬁxed in software

release 5.2(2)CSX. (CSCdm20714)

• When the SPAN destination port is a trunk port, the encapsulation matches the trunk type: ISL

or 802.1Q. When the SPAN destination port is an access port, the default encapsulation is

802.1Q. The default encapsulation cannot be changed on Gigabit Ethernet access ports used as a

SPAN destination. To disable 802.1Q encapsulation on other ports, enter a set trunk

mod_num/port_num off command before entering a set span command. This problem is ﬁxed in

software release 5.2(2)CSX. (CSCdm20968)

• On EtherChannels between 10/100 Ethernet switching modules, occasionally after changing the

speed of the EtherChannel ports from 10 Mbps to 100 Mbps or 100 Mbps to 10 Mbps, the

channel may form with fewer ports or multiple channels may form. To restore the original

EtherChannel conﬁguration, disable all the ports in the EtherChannel and then enable them. This

problem is ﬁxed in software release 5.2(2)CSX. (CSCdm22352)

• With redundant supervisor engines, after switch over to the standby supervisor engine, SNMP

applications on network management systems fail when accessing cdpCacheTable

(1.3.6.1.4.1.9.9.23.1.2.1). This problem is ﬁxed in software release 5.2(2)CSX. (CSCdm22434)

• When you turn off the power on any module, you cannot turn the power back on through SNMP.

The workaround is to use the CLI command set module power up mod_num. This problem is

ﬁxed in software release 5.3(1)CSX. (CSCdm23288)

• On 10/100 and 100 Mbps Ethernet switching modules with one or more EtherChannel trunks,

after entering set module power down and set module power up commands, occasionally the

spanning tree state is “not connected” for all but VLAN 1. To restore connectivity, reset the

module. This problem is ﬁxed in software release 5.2(2)CSX. (CSCdm23329)

• If IGMP is enabled, when a port in an EtherChannel to the MSM gets disabled, the switch stops

forwarding IP multicast trafﬁc in groups learned on the switch to the MSM. To restore

transmission of IP multicast trafﬁc to the MSM, disable and then enable the channel. This

problem is ﬁxed in software release 5.2(2)CSX. (CSCdm24673)

Resolved Caveats in Software Release 5.2(1)CSX

This section describes resolved caveats in supervisor engine software release 5.2(1)CSX:

• In some cases, if you change the VLAN assignment of ports in a Fast EtherChannel, some ports

are placed in the “errdisable” state and the channel is not renegotiated. The correct behavior is

that the channel is torn down and renegotiated. This problem is ﬁxed in software release

5.2(1)CSX. (CSCdk32807)

• Under some circumstances, several ports might incorrectly be assigned the same ifIndex value

(you can see the ifIndex values for ports using the show port command). If multiple ports share

an ifIndex value, when you change the conﬁguration on one port other ports with the same

ifIndex value might be affected. If this problem occurs, clear the switch conﬁguration using the

clear conﬁg all command (make sure you back up your switch conﬁguration before entering this

command or your conﬁguration will be lost) and reset the switch. This problem is ﬁxed in

software release 5.2(1)CSX. (CSCdk74506)