Installation guide

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

Features for Supervisor Engine Software Release 5.2

This section describes the new features available in software release 5.2.

• GARP VLAN Registration Protocol (GVRP; see IEEE 802.1p) provides 802.1Q-compliant

VLAN pruning and dynamic VLAN creation on 802.1Q trunk ports.

• GARP Multicast Registration Protocol (GMRP; see IEEE 802.1p) maintains Layer 2 multicast

groups that determine which switch ports need to participate in multicasts.

• EtherChannel frame distribution is conﬁgurable with Layer 2 Switching Feature Card II

(WS-F6020A) and can use either Media Access Control (MAC) addresses or IP addresses and

either source or destination or both source and destination addresses.

Enter a show module command for the supervisor engine to determine if EtherChannel frame

distribution is conﬁgurable on your switch. If the display shows the “Sub-Type” to be “L2

Switching Engine I WS-F6020,” then EtherChannel frame distribution is not conﬁgurable on

your switch; it uses source and destination MAC addresses. EtherChannel frame distribution is

conﬁgurable with any other switching engine and the default is to use source and destination IP

addresses.

• The Spanning-Tree Protocol can be enabled and disabled on a per-VLAN basis.

Features for Supervisor Engine Software Release 5.1

This section describes the new features available in software release 5.1.

• IP supernetting, compatible with classless interdomain routing (CIDR) allows entry of a netmask

instead of a subnet mask.

• 802.1Q-to-ISL VLAN mapping allows mapping of up to eight 802.1Q VLANs numbered above

1005 to ISL VLANs.

• Quality of service (QoS) prioritizes network trafﬁc with class of service (CoS) values received in

ISL or 802.1Q frame headers or with CoS values set in the switch.

• All Ethernet ports on all modules, including those on a standby supervisor engine, support

EtherChannel (maximum of eight ports) with no requirement that ports be contiguous or on the

same module.

• All Ethernet ports on all modules support Inter-Switch Link (ISL) and 802.1Q VLAN trunking.

• For transmitted trafﬁc, provides up to four SPAN sessions; for received or both transmitted and

received trafﬁc, provides up to two SPAN sessions.

Usage Guidelines and Restrictions

This section provides usage guidelines and restrictions for the Catalyst 6000 family switches.

• The following debounce timer command options have been added to increase the jitter tolerance

on 10/100 UTP ports to make them interoperable with out-of-spec NICs:

set option debounce enable—sets debounce to 3.1 seconds on 10/100 cards.

set option debounce disable—sets debounce to 300 mS. The default is 300 mS debounce.

(CSCdp56343)

• Software release 5.x does not support full or destination-source ﬂows for IPX trafﬁc. As a result,

please note that the following caveat listed as open in release 5.3(3) will not be ﬁxed: