Datasheet
96
Release Notes for Cisco IOS Release 12.1E on the Catalyst 6500 and Cisco 7600 Supervisor Engine and MSFC
OL-2310-11
New Features
New Software Features in Release 12.1(8a)E
Release 12.1(8a)E supports these new software features:
• Support for source specific multicast with IGMPv3, IGMP v3lite, and URD. For complete
information and procedures, refer to this URL:
http//www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dtssm5t.ht
m
• Support for chassis with reduced MAC address allocation. Refer to the “Configuring STP” chapter
in the Catalyst 6500 Series Cisco IOS Software Configuration Guide at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/12_1e/swconfig/spantree.htm
• The highest value for the maximum-paths command has been raised from six to eight.
• Enhanced Unicast RPF for Supervisor Engine 2, PFC2, and MSFC2. Refer to the “Configuring
Network Security” chapter in the Catalyst 6500 Series Cisco IOS Software Configuration Guide at
this URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/12_1e/swconfig/secure.htm
• Backup server farms in Cisco IOS server load balancing. Refer to this publication:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121e8/
iosslb8e.htm
• Enhanced password security. Refer to this publication:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121e8/
8e_md5.htm
• With Supervisor Engine 2, you can configure the MTU size on VLAN interfaces to support jumbo
frames. For Supervisor Engine 1, see the “New Software Features in Release 12.1(7)E” section.
Release 12.1(8a)E provides initial support in 12.1E for the following software features (these features
were previously supported in 12.1(5c)EX releases):
• IGMP snooping querier
• With Supervisor Engine 2, PFC2, MSFC2, and DFCs, distributed hardware Layer 3 switching:
–
Distributed hardware IP unicast Layer 3 switching
–
Distributed hardware IP multicast Layer 3 switching, including (*,G) flows
• With Supervisor Engine 2, PFC2, MSFC2, support in distributed hardware for these features:
–
Multicast non-RPF traffic processing
–
PBR route-map sequences that use the match ip address and set ip next-hop keywords (the
MSFC2 provides processing in software for route-map sequences that use the match length and
set interface keywords); refer to the Cisco IOS Quality of Service Solutions Configuration
Guide, Release 12.1, “Classification,” “Configuring Policy-Based Routing,” at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/qos_c/qcprt1/qcdp
br.htm
With Release 12.1(11b)E and later releases, the PFC2 and any DFCs provide hardware support
for the set ip default next-hop PBR keywords.
–
TCP intercept
–
Enhanced reflexive ACLS
–
IP Unicast RPF