Cisco WS-X6416-GE-MT - Interface Module - Expansion Manual do Utilizador descarregar pdf (Página 33)

White Paper

Secure Copy Protocol (SCP)

Currently supported in the Cisco Catalyst OS and Cisco IOS Software, the Secure Copy Protocol

provides a secure method for copying crypto image files. SCP relies on Secure Shell (SSH) and

allows the network administrator to copy a SCP to and from the system through an encrypted

channel.

Time Domain Reflectometer (TDR)

Time Domain Reflectometer (TDR) enables the troubleshooting of cable plants, easing the

operational support of the switch. Built into the port interfaces of 48-port 10/100/1000 RJ-45 and

the 6148A 10/100 modules, TDR enables network managers to remotely identify the location of

cable breaks and faults. The TDR test sends a signal along a cable. Using intelligent DSPs built

into the port interfaces, it measures the time it takes for the echo to return, and computes the

distance to the break.

TDR is an online test which, when completed, displays the port’s connected wire pairs and

distances to their breaks (if present). Execution commands are as follows:

Cisco Catalyst OS Cisco IOS Software

Console>(enable)test cable-diagnostics tdr 3/1

Console>(enable)show port tdr 3/1

IOS#test cable-diagnostics tdr interface g3/1

IOS#show cable-diagnostics tdr interface g3/1

Access Control Lists

Cisco Catalyst 6500 Series running a hybrid OS support the following types of ACLs:

●

Cisco IOS Software routing ACLs (RACLs) provide access control for routed traffic between

VLANs. Standard and extended Cisco IOS Software ACLs are configured on the input and

output of router interfaces and, as such, are applied to routed packets. The use of Cisco

IOS Software ACLs requires both a PFCx and a MSFCx on the Cisco Catalyst 6500 Series.

●

VLAN ACLs (VACLs) provide access control based on Layer 3 or Layer 4 information for IP

or IPX protocols. A VACL is applied to all packets (bridged and routed) on a VLAN and can

be configured on any VLAN interface. VACLs are used for security packet filtering and

redirecting traffic to specific physical switch ports. They are not defined by direction (input

or output). VACL functionality requires a PFCx.

●

QoS ACLs are used to identify ingress traffic which is should be marked or policed upon

entering a port or VLAN. QoS ACL functionality requires a PFCx.

●

Port-based ACLs (PACL) are access lists mapped to a physical port (rather than to a

VLAN, which is typically comprised of multiple ports). Like VACLs, PACLs are applied to

both Layer 2 and Layer 3 forwarded packets. Only ingress PACLs are supported on the

Cisco Catalyst 6500.

Cisco IOS Software RACLs have the same implementation in hybrid as in Cisco IOS Software

(whether on the Cisco Catalyst 6500 or any other Cisco IOS Software router). QoS ACLs for both

operating systems are covered in the QoS section of this white paper. This section describes the

differences between the VACL implementation in the Cisco Catalyst OS and Cisco IOS Software

and also covers PACL implementation in the Cisco Catalyst OS.

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