Cisco Catalyst 6880-X Specifications download pdf (Page 56)

Distribution Layer April 2014

Step 6: Configure the system virtual MAC address.

By default, the VSS system uses the default chassis-based MAC-address pool assigned to the switch that is

resolved to be the active switch when the switches initialize. As a result of events such as stateful switchover,

the MAC may change. Set a virtual MAC address for the VSS system so that either active supervisor will use the

same MAC address pool, regardless of which supervisor is active, even across a system reload.

D6500-VSS(config)# switch virtual domain 100

D6500-VSS(config-vs-domain)# mac-address use-virtual

Configured Router mac address is different from operational value. Change will

take effect after the configuration is saved and the entire Virtual Switching

System (Active and Standby) is reloaded.

Step 7: Save and reload the switch.

Save the running configuration and then reload the entire system (both chassis).

copy running-config startup-config

reload

When the switches initialize after this final reload, the VSS configuration is complete.

Step 8: Configure QoS.

On the Cisco Catalyst 6500 Supervisor Engine 2T based switches and Cisco Catalyst 6880-X switches, QoS is

enabled by default and policies for interface queuing are defined by attached service policies. The QoS policies

are now defined using Cisco Common Classification Policy Language (C3PL), which is similar to Modular QoS

CLI to reduce operational complexity.

All interface connections in the distribution and core are set to trust differentiated services code point (DSCP)

markings. Even though this design is configured to trust DSCP markings, it is a best practice to ensure proper

mapping of CoS to DSCP for VoIP. This mapping is accomplished by overriding the default mapping of CoS 5

“voice bearer traffic” to DSCP 40, with DSCP 46, which is the EF per-hop behavior for voice.

This egress QoS policy is configured to accommodate the 10-Gigabit and 40-Gigabit Ethernet ports on cards

which use a 1P7Q4T queuing architecture.

! Enable port-based QoS

auto qos default

! Class maps for 1P7Q4T 10Gbps and 40Gbps ports service policy

class-map type lan-queuing match-any PRIORITY-QUEUE

match dscp ef

match dscp cs5

match dscp cs4

match cos 5

class-map type lan-queuing match-any CONTROL-MGMT-QUEUE

match dscp cs7

match dscp cs6

match dscp cs3

match dscp cs2

match cos 3 6 7

class-map type lan-queuing match-any MULTIMEDIA-CONFERENCING-QUEUE

match dscp af41 af42 af43

match cos 4

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Cisco Catalyst 6880-X Specifications Page 56

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