Cisco WS-X6248-RJ-45 - Catalyst 6000 Expansion Module Manual de usuario descargar pdf (Pagina 34)

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The following table provides a comparison of the different conﬁguration parameters for each operating system.

Switch Port ANalyzer (SPAN)

SPAN is a troubleshooting analysis feature used to mirror the trafﬁc coming to and from physical and logical

interfaces on the switch. A SPAN session is an association of a set of SPAN source ports or VLANs that need to be

monitored and a SPAN destination port is where the mirrored trafﬁc is sent. The SPAN destination port does not

belong to any VLAN and does not participate in spanning tree. Any Fast Ethernet or Gigabit Ethernet port can be

conﬁgured as a SPAN source or destination port (including fabric-enabled and DFC-enabled line cards).

SPAN has been implemented differently between the two operating systems. CatOS can support up to two

ingress-only or ingress/egress SPAN sessions and four egress-only SPAN sessions. Cisco IOS Software supports two

SPAN sessions that can include trafﬁc from both directions on the source interfaces. Different SPAN sessions can

contain overlapping or distinct sets of source interfaces. Both switchports and routed ports can be conﬁgured as

SPAN sources. Different SPAN sessions must contain distinct, nonoverlapping sets of destination interfaces.

Ingress SPAN (Rx) copies network trafﬁc received by the source ports for analysis at the destination port. Egress

SPAN (Tx) copies network trafﬁc transmitted from the source ports. Conﬁguration option “both” copies network

trafﬁc received and transmitted by the source ports to the destination port. The Cisco IOS Software can monitor only

one egress port and up to 64 ingress ports as source ports. Up to 64 SPAN destination interfaces are supported.

The following example conﬁgures ports 5/1-2 as SPAN Sources and port 5/3 as the SPAN destination.

RSPAN is currently not supported in the Cisco IOS Software.

Jumbo Frames

The jumbo frame feature supports a single larger-than-default Ethernet MTU size (1500 bytes) on the switch. The

MTU can be conﬁgured between 1500 to 10240 bytes with default (recommended) MTU of 9216 bytes. Jumbo

frames are switched in hardware with no performance impact for Fast Ethernet and Gigabit Ethernet interfaces.

These interfaces can be routed interfaces, access switchports, trunk switchports, or EtherChannels (observe any

CatOS Cisco IOS Software

set qos acl ip CatOS dscp 24 any

commit qos acl CatOS

set qos acl map CatOS 3/1

access-list 101 permit ip any any

policy-map IOS

class IOS access-group 101

police 4000000000 conform-action set-dscp-

transmit 24 exceed-action transmit

interface gigabitethernet 3/1

service-policy input IOS

CatOS Cisco IOS Software

set span 5/1,5/2 5/3 rx create monitor session 1 source int f5/1 – 2 rx

monitor session 1 dest int f5/3

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40 41 42

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Cisco WS-X6248-RJ-45 - Catalyst 6000 Expansion Module Manual de usuario Pagina 34