Cisco Cisco IOS XE 3.5E 發佈版本通知

The Cisco IOS XE Release 3.8.xE Documentation Roadmap provides quick and easy access to all 
relevant documentation for specific platforms. Look for Quick Links to Platform Documentation on the 
respective platform documentation pages. For more information, see 

This section describes the new and changed information for the Catalyst 4500-X Series Switch running 
Cisco IOS XE software:

No new features were introduced in Cisco IOS XE Release 3.8.3E.

No new features were introduced in Cisco IOS XE Release 3.8.2E.

Cisco Encapsulated Remote Switched 
Port Analyzer (ERSPAN) 

Helps monitor traffic on source ports or source VLANs, on remote destination 
switches or probes across the network. ERSPAN uses a generic routing encapsulation 
tunnel (GRE) tunnel to carry traffic between switches.

Limiting Login

Helps network administrators to limit the login attempt of users to a network. When 
a user fails to successfully login to a network within a configurable number of 
attempts within a configurable time limit, the user can be blocked. This feature is 
enabled only for local users and not for remote users. You need to configure the aaa 
authentication rejected command in global configuration mode to enable this 
feature.

x.509v3 with SSH Authentication

Uses the public key algorithm (PKI) for server and user authentication, and allows the 
Secure Shell (SSH) protocol to verify the identity of the owner of a key pair via digital 
certificates, signed and issued by a Certificate Authority (CA).