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Ethernet Priority Flow Control, Multicast rate limiting

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DRAFT: BROCADE CONFIDENTIAL Multicast rate limiting 9 Ethernet Priority Flow Control Ethernet Priority Flow Control (PFC) is a basic extension of the Ethernet Pause. The Pause MAC control message is extended with eight 2-byte pause numbers and a bitmask to indicate which values are valid. Each pause number is interpreted identically to the base Pause protocol; however each is applied to the corresponding Ethernet priority / class level. For example, the Pause number zero applies to priority zero, Pause number one applies to priority one, and so on. This addresses one shortcoming of the Ethernet Pause mechanism, which is disruptive to all traffic on the link. However, it still suffers from the other Ethernet Pause limitations. Ethernet Priority Flow Control includes the following features: • Everything operates exactly as in Ethernet Pause described above except there are eight high-water and low-water thresholds for each input port. This means queue levels are tracked per input port plus priority. • Pause On/Off can be specified independently for TX and RX directions per priority. • Pause time programmed into Ethernet MAC is a single value covering all priorities. • Both ends of a link must be configured identically for Ethernet Pause or Ethernet Priority Flow Control because they are incompatible. Enabling an Ethernet PFC Perform the following steps from Privileged EXEC mode to enable Ethernet PFC. 1. Enter global configuration mode. switch#configure terminal 2. Specify the 10-gigabit Ethernet interface. Example of selecting the 10-Gigabit Ethernet interface port 0/2. switch(config)#interface tengigabitethernet 0/2 3. Enable an Ethernet PFC on the interface. switch(conf-if-te-0/2)#qos flowcontrol pfc 3 tx on rx on Example of enabling an interface 802.3x Pause flow control TX and RX. switch:admin>cmsh switch>enable switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. switch(config)#interface tengigabitethernet 0/2 switch(conf-if-te-0/2)#qos flowcontrol pfc 3 tx on rx on switch(conf-if-te-0/2)#exit switch(config)#end 4. Enter the copy command to save the running-config file to the startup-config file. switch#copy running-config startup-config Multicast rate limiting Multicast rate limiting provides a mechanism to control multicast frame replication and cap the effect of multicast traffic. Converged Enhanced Ethernet Administrator's Guide 101 53-1001761-01

Section	Page
Contents	3
Figures	11
Tables	13
About This Document	15
In this chapter	15
How this document is organized	15
Supported hardware and software	16
What’s new in this document	17
Document conventions	17
Text formatting	17
Command syntax conventions	17
Notes, cautions, and warnings	18
Key terms	18
Notice to the reader	19
Additional information	19
Brocade resources	19
Other industry resources	19
Getting technical help	19
Document feedback	20
Introducing FCoE	23
In this chapter	23
FCoE terminology	23
FCoE overview	23
FCoE hardware	24
Layer 2 Ethernet overview	25
Layer 2 forwarding	25
VLAN tagging	26
Loop-free network environment	27
Frame classification (incoming)	27
Congestion control and queuing	28
Access control	29
Trunking	30
Flow Control	30
FCoE Initialization Protocol	30
FIP discovery	30
FIP login	31
FIP logout	32
FCoE login	32
FCoE logout	32
Logincfg	33
Name server	33
FC zoning	33
Registered State Change Notification (RSCN)	34
FCoE queuing	34
Using the CEE CLI	35
In this chapter	35
Management Tools	35
CEE Command Line Interface	35
Saving your configuration changes	36
CEE CLI RBAC permissions	36
Accessing the CEE CLI through the console or Telnet	37
Accessing the CEE CLI from the Fabric OS shell	37
CEE CLI command modes	37
CEE CLI keyboard shortcuts	39
Using the do command as a shortcut	40
Displaying CEE CLI commands and command syntax	40
CEE CLI command completion	41
CEE CLI command output modifiers	41
Standard CEE Integrations and Configurations	43
In this chapter	43
Overview of standard CEE integrations	43
SAN Integration	43
Integrating a Brocade 8000 switch on a SAN	44
CEE and LAN integration	44
Creating the CEE map	46
Configuring DCBX	47
Configuring Spanning Tree Protocol	48
Configuring VLAN Membership	48
Configuring the CEE Interfaces	49
Server connections to the Brocade 8000 switch	51
Fibre Channel configuration for the CNA	51
Ethernet configuration for the CNA	51
Minimum CEE configuration to allow FCoE traffic flow	51
Configuring VLANs Using the CEE CLI	53
In this chapter	53
VLAN overview	53
Ingress VLAN filtering	53
VLAN configuration guidelines and restrictions	55
Default VLAN configuration	55
VLAN configuration and management	56
Enabling and disabling an interface port	56
Configuring the MTU on an interface port	56
Creating a VLAN interface	57
Enabling STP on a VLAN	57
Disabling STP on a VLAN	57
Configuring a VLAN interface to forward FCoE traffic	58
Configuring an interface port as a Layer 2 switch port	58
Configuring an interface port as an access interface	58
Configuring an interface port as a trunk interface	59
Disabling a VLAN on a trunk interface	59
Configuring an interface port as a converged interface	60
Disabling a VLAN on a converged interface	60
Configuring protocol-based VLAN classifier rules	60
Configuring a VLAN classifier rule	61
Configuring MAC address-based VLAN classifier rules	61
Deleting a VLAN classifier rule	61
Creating a VLAN classifier group and adding rules	62
Activating a VLAN classifier group with an interface port	62
Clearing VLAN counter statistics	62
Displaying VLAN information	62
Configuring the MAC address table	63
Specifying or disabling the aging time for MAC addresses	63
Adding static addresses to the MAC address table	63
Configuring STP, RSTP, and MSTP using the CEE CLI	65
In this chapter	65
STP overview	65
Configuring STP on Brocade FCoE hardware	66
RSTP overview	67
MSTP overview	69
Configuring MSTP on Brocade FCoE hardware	70
STP, RSTP, and MSTP configuration guidelines and restrictions	71
Default STP, RSTP, and MSTP configuration	72
STP, RSTP, and MSTP configuration and management	73
Enabling STP, RSTP, or MSTP	73
Disabling STP, RSTP, or MSTP	73
Shutting down STP, RSTP, or MSTP globally	73
Specifying the bridge priority	74
Specifying the bridge forward delay	74
Specifying the bridge maximum aging time	75
Enabling the error disable timeout timer	75
Specifying the error disable timeout interval	75
Specifying the port-channel path cost	76
Specifying the bridge hello time (STP and RSTP)	76
Specifying the transmit hold count (RSTP and MSTP)	76
Enabling Cisco interoperability (MSTP)	77
Disabling Cisco interoperability (MSTP)	77
Mapping a VLAN to an MSTP instance	77
Specifying the maximum number of hops for a BPDU (MSTP)	78
Specifying a name for an MSTP region	78
Specifying a revision number for an MSTP configuration	78
Flushing MAC addresses (RSTP and MSTP)	79
Clearing spanning tree counters	79
Clearing spanning tree-detected protocols	79
Displaying STP, RSTP, and MSTP-related information	80
Configuring STP, RSTP, or MSTP on CEE interface ports	80
Enabling automatic edge detection	80
Configuring the path cost	80
Enabling a port (interface) as an edge port	81
Enabling the guard root	81
Specifying the MSTP hello time	82
Specifying restrictions for an MSTP instance	82
Specifying a link type	83
Enabling port fast (STP)	83
Specifying the port priority	83
Restricting the port from becoming a root port	84
Restricting the topology change notification	84
Enabling spanning tree	84
Disabling spanning tree	85
Configuring Link Aggregation using the CEE CLI	87
In this chapter	87
Link aggregation overview	87
Link Aggregation Group configuration	87
Link Aggregation Control Protocol	90
Dynamic link aggregation	90
Static link aggregation	90
Brocade-proprietary aggregation	90
LAG distribution process	90
LACP configuration guidelines and restrictions	91
Default LACP configuration	91
LACP configuration and management	91
Enabling LACP on a CEE interface	91
Configuring the LACP system priority	92
Configuring the LACP timeout period on a CEE interface	92
Clearing LACP counter statistics on a LAG	92
Clearing LACP counter statistics on all LAG groups	93
Displaying LACP information	93
LACP troubleshooting tips	93
Configuring LLDP using the CEE CLI	95
In this chapter	95
LLDP overview	95
Layer 2 topology mapping	96
DCBX overview	98
Enhanced Transmission Selection (ETS)	98
Priority Flow Control (PFC)	99
DCBX interaction with other vendor devices	99
LLDP configuration guidelines and restrictions	99
Default LLDP configuration	100
LLDP configuration and management	100
Enabling LLDP globally	100
Disabling and resetting LLDP globally	100
Configuring LLDP global command options	101
Configuring LLDP interface-level command options	105
Clearing LLDP-related information	105
Displaying LLDP-related information	106
Configuring ACLs using the CEE CLI	107
In this chapter	107
ACL overview	107
Default ACL configuration	108
ACL configuration guidelines and restrictions	108
ACL configuration and management	108
Creating a standard MAC ACL and adding rules	108
Creating an extended MAC ACL and adding rules	109
Modifying MAC ACL rules	109
Removing a MAC ACL	110
Reordering the sequence numbers in a MAC ACL	110
Applying a MAC ACL to a CEE interface	111
Applying a MAC ACL to a VLAN interface	111
Configuring QoS using the CEE CLI	113
In this chapter	113
QoS overview	113
Rewriting	114
Queueing	114
User-priority mapping	114
Traffic class mapping	117
Congestion control	120
Tail drop	120
Ethernet pause	122
Ethernet Priority Flow Control	123
Multicast rate limiting	123
Scheduling	124
Strict priority scheduling	124
Deficit weighted round robin scheduling	125
Traffic class scheduling policy	125
Multicast queue scheduling	127
Converged Enhanced Ethernet map configuration	128
Configuring 802.1x Port Authentication	133
In this chapter	133
802.1x protocol overview	133
802.1x configuration guidelines and restrictions	133
802.1x authentication configuration tasks	134
Configure authentication between the switch and CNA or NIC	134
Interface-specific administrative tasks for 802.1x	134
Configuring 802.1x on specific interface ports	134
Configuring 802.1x timeouts on specific interface ports	135
Configuring 802.1x re-authentication on specific interface ports	135
Disabling 802.1x on specific interface ports	136
Configuring IGMP	137
In this chapter	137
About IGMP	137
Active IGMP snooping	137
Multicast routing	138
Configuring IGMP	138
Configuring IGMP snooping querier	139
Monitoring IGMP	139
Configuring RMON using the CEE CLI	141
In this chapter	141
RMON overview	141
RMON configuration and management	141
Default RMON configuration	141
Configuring RMON settings	141
Configuring RMON events	142
Configuring RMON Ethernet group statistics collection	142
FCoE configuration using the Fabric OS CLI	145
In this chapter	145
FCoE configuration guidelines and restrictions	145
Managing and displaying the FCoE configuration	146
Enabling or disabling an FCoE port	146
Configuring FCMAP values for a VLAN	146
Configuring FIP multicast advertisement intervals	146
Clearing logins	147
Displaying FCoE configuration-related information	147
Managing and displaying the FCoE login configuration	147
Enabling or disabling FCoE login configuration management	147
Displaying or aborting the current configuration transaction	148
Cleaning up login groups and VN_port mappings	148
Displaying the FCoE login configuration	149
Saving the current FCoE configuration	149
Creating and managing the FCoE login group configuration	149
Creating an FCoE login group	149
Modifying the FCoE login group device list	150
Deleting an FCoE login group	150
Renaming an FCoE login group	151
CEE configuration management	153
In this chapter	153
CEE configuration management guidelines and restrictions	153
CEE configuration management tasks	153
Display the running configuration file	154
Saving the running configuration file	154
Loading the startup configuration file	154
Erasing the startup configuration file.	154
Archiving the running configuration file	154
Restore an archived running configuration file	155
Archiving the startup configuration file	155
Restore an archived startup configuration file	155
Archive a startup configuration from Flash	155
Restore a startup configuration file from Flash	155
CEE configuration management commands	156
Flash file management commands	156
Debugging and logging commands	157

Match case Limit results 1 per page

Converged Enhanced Ethernet Administrator’s Guide

101

53-1001761-01

Multicast rate limiting

DRAFT: BROCADE CONFIDENTIAL

Ethernet Priority Flow Control

Ethernet Priority Flow Control (PFC) is a basic extension of the Ethernet Pause. The Pause MAC

control message is extended with eight 2-byte pause numbers and a bitmask to indicate which

values are valid. Each pause number is interpreted identically to the base Pause protocol; however

each is applied to the corresponding Ethernet priority / class level. For example, the Pause number

zero applies to priority zero, Pause number one applies to priority one, and so on. This addresses

one shortcoming of the Ethernet Pause mechanism, which is disruptive to all traffic on the link.

However, it still suffers from the other Ethernet Pause limitations.

Ethernet Priority Flow Control includes the following features:

•

Everything operates exactly as in Ethernet Pause described above except there are eight

high-water and low-water thresholds for each input port. This means queue levels are tracked

per input port plus priority.

•

Pause On/Off can be specified independently for TX and RX directions per priority.

•

Pause time programmed into Ethernet MAC is a single value covering all priorities.

•

Both ends of a link must be configured identically for Ethernet Pause or Ethernet Priority Flow

Control because they are incompatible.

Enabling an Ethernet PFC

Perform the following steps from Privileged EXEC mode to enable Ethernet PFC.

Enter global configuration mode.

switch#

configure terminal

Specify the 10-gigabit Ethernet interface.

Example of selecting the 10-Gigabit Ethernet interface port 0/2.

switch(config)#

interface tengigabitethernet 0/2

Enable an Ethernet PFC on the interface.

switch(conf-if-te-0/2)#

qos flowcontrol pfc 3 tx on rx on

Example

of enabling an interface 802.3x Pause flow control TX and RX.

switch:admin>

cmsh

switch>

enable

switch#

configure terminal

Enter configuration commands, one per line.

End with CNTL/Z.

switch(config)#

interface tengigabitethernet 0/2

switch(conf-if-te-0/2)#

qos flowcontrol pfc 3 tx on rx on

switch(conf-if-te-0/2)#

exit

switch(config)#end

Enter the copy command to save the running-config file to the startup-config file.

switch#

copy running-config startup-config

Multicast rate limiting

Multicast rate limiting provides a mechanism to control multicast frame replication and cap the

effect of multicast traffic.