Table Of Contents

Inter-rack Switch Control Network Commands on Cisco IOS XR Software

clear controller switch

clear controller switch errdisable

clear controller switch inter-rack

show controllers switch

show controllers switch inter-rack ports

show controllers switch inter-rack statistics

show controllers switch inter-rack stp

show controllers switch inter-rack udld

show controllers switch stp location

show controllers switch stp ports

show controllers switch stp region

show controllers switch udld location

show controllers switch udld ports

Inter-rack Switch Control Network Commands on Cisco IOS XR Software

---

This chapter describes the Cisco IOS XR software commands used to monitor inter-rack switches for the Cisco CRS-1.

clear controller switch

To clear the statistics for the Broadcom switches for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the clear controller switch command in administration EXEC mode.

clear controller switch {instance} {statistics} {all {location node-id} | location node-id | ports number{location node-id}}

Syntax Description

instance	Switch instance identifier. The switch number is either 0 or 1.
statistics	Clears statistics for packets transmitted/received on switch ports.
all	Clears statistics for all ports.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.
ports number	Clears statistics for a specific switch port.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was updated on the Cisco CRS-1 to include inter-rack switches.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The clear controller switch command is used to specify intra-rack switches.

Task ID

Task ID	Operations
root-system	execute

Examples

:The following example shows how to clear the statistics for the Broadcom switches:

RP/0/0/CPU0:router(admin)# clear controller switch 1 statistics all location f0/sc0/cpu0

clear controller switch errdisable

To clear the err-disable state of the switch port for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the clear controller switch errdisable command in administration EXEC mode.

clear controller switch errdisable {port {FE | GE} {0 | 1}} {location node-id}}

Syntax Description

port	Specifies the port.
FE	Specifies the ports for the Fast Ethernet (FE).
GE	Specifies the ports for the Gigabit Ethernet (GE).
0	Specifies port number 0 for the backplane FE.
1	Specifies port number 1 for the backplane FE.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was updated on the Cisco CRS-1 to include inter-rack switches.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Task ID

Task ID	Operations
root-system	execute

Examples

The following example shows how to clear the error disable state for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)## clear controller switch errdisable port GE 1 location 
f0/sc0/cpu0

clear controller switch inter-rack

To clear the ISC switch counters, use the clear controller switch inter-rack command in administration EXEC mode.

clear controller switch inter-rack {errdisable {ports {number | all} | statistics {all | ports number}} {location node-id}

Syntax Description

errdisable	Clears the err-disabled state of the port if the port was brought down by Unidirectional Link Detection (UDLD).
ports	Specifies the port.
number	Number for the port. The range is from 0 to 21.
all	Specifies all ports for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card.
statistics	Clears the statistics for the switch.
all	Specifies all of the ports.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The clear controller switch inter-rack command is used to specify inter-rack switches.

Task ID

Task ID	Operations
root-system	execute

Examples

The following example shows how to clear statistics for all the ports for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# clear controller switch inter-rack statistics all location 
f0/sc0/cpu0

show controllers switch

To display the control Ethernet connection in the route processor (RP), use the show controllers switch command in administration EXEC mode.

show controllers switch instance {ports | statistics} location node-id

Syntax Description

instance	Two intra-rack switches are present on the RP/SC. The instance is from 0 to 1 that identifies the specific switch.
ports	Displays the port states as up, down, or err-disabled. The ports keyword displays control Ethernet switches, port states, statistics, and Spanning Tree Protocol (STP) information.
statistics	Displays switch port statistics.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The show controllers switch command is used to specify intra-rack switches.

Task ID

Task ID	Operations
fabric	read
root-system	read

Examples

The following sample output shows how to verify the control Ethernet connection on the RP:

RP/0/RP0/CPU0:router(admin)# show controllers switch 0 ports location 0/rp0/Cpu0

RP/0/RP0/CPU0:router(admin)#show controllers switch 0 ports location 0/rp0/CPu0

FE Port  0 : Up, STP State : FORWARDING (Connects to - 0/RP0)

 FE Port  1 : Up, STP State : FORWARDING (Connects to - 0/RP1)

 FE Port  2 : Down                       (Connects to - 0/FC0)

 FE Port  3 : Down                       (Connects to - 0/FC1)

 FE Port  4 : Down                       (Connects to - 0/AM0)

 FE Port  5 : Down                       (Connects to - 0/AM1)

 FE Port  6 : Down                       (Connects to - )

 FE Port  7 : Down                       (Connects to - )

 FE Port  8 : Down                       (Connects to - 0/SM0)

 FE Port  9 : Up, STP State : FORWARDING (Connects to - 0/SM1)

 FE Port 10 : Down                       (Connects to - 0/SM2)

 FE Port 11 : Down                       (Connects to - 0/SM3)

 FE Port 12 : Down                       (Connects to - 0/SM4)

 FE Port 13 : Down                       (Connects to - 0/SM5)

 FE Port 14 : Down                       (Connects to - 0/SM6)

 FE Port 15 : Down                       (Connects to - 0/SM7)

 GE Port  0 : Up, STP State : FORWARDING (Connects to - GE_0)

 GE Port  1 : Up, STP State : FORWARDING (Connects to - Switch 1)

The following sample output shows how to verify the control Ethernet connection on intra-rack switches for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch 0 ports location f0/sc0/Cpu0

FE Port  0 : Up, STP State : FORWARDING (Connects to - F0/SC0)

 FE Port  1 : Up, STP State : FORWARDING (Connects to - F0/SC1)

 FE Port  2 : Down                       (Connects to - F0/FC0)

 FE Port  3 : Down                       (Connects to - F0/FC1)

 FE Port  4 : Down                       (Connects to - F0/AM0)

 FE Port  5 : Down                       (Connects to - F0/AM1)

 FE Port  6 : Down                       (Connects to - F0/LM0)

 FE Port  7 : Down                       (Connects to - F0/LM1)

 FE Port  8 : Down                       (Connects to - F0/SM0)

 FE Port  9 : Down                       (Connects to - F0/SM1)

 FE Port 10 : Down                       (Connects to - F0/SM2)

 FE Port 11 : Down                       (Connects to - F0/SM3)

 FE Port 12 : Down                       (Connects to - F0/SM4)

 FE Port 13 : Down                       (Connects to - F0/SM5)

 FE Port 14 : Down                       (Connects to - F0/SM6)

 FE Port 15 : Down                       (Connects to - F0/SM7)

 GE Port  0 : Up, STP State : FORWARDING (Connects to - GE_0)

 GE Port  1 : Up, STP State : FORWARDING (Connects to - Switch 1)

Table 1 describes the significant fields shown in the display.

Table 1 show controllers switch Field Descriptions 

Field	Description
FE Port	Fast Ethernet (FE) port.
STP State	Spanning Tree Protocol (STP) state of the port.
GE Port	Gigabit Ethernet (GE) port.

show controllers switch inter-rack ports

To display the inter-rack switch port states for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the show controllers switch inter-rack ports command in administration EXEC mode.

show controllers switch inter-rack ports {all} {location node-id}

Syntax Description

all	Displays all the ports for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The port numbers, which range from 0 to 21, correspond to those on the front panel.

---

Note The show controllers switch inter-rack ports command is applied only to the 22-port SCGE. When you use the all and location keywords, all other supported cards are displayed including the route processor (RP).

---

Task ID

Task ID	Operations
fabric	read
root-system	read
admin	read

Examples

The following example shows sample output of the control Ethernet connection for inter-rack switches on the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch inter-rack ports all location 
f0/sc0/CPU0

GE_Port_0 : Down                      

 GE_Port_1 : Down                      

 ...

 ...

 GE_Port_13 : Up

 GE_Port_14 : Up

 ...

 ...

 GE_Port_20 : Down                      

 GE_Port_21 : Down                      

 To_5618  :  Up

 Stacking : Up

show controllers switch inter-rack statistics

To display the statistics on the ports of the inter-rack switches for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the show controllers switch inter-rack statistics command in administration EXEC mode.

show controllers switch inter-rack statistics {interface number | all} {brief | detail} location node-id

Syntax Description

interface number	Number for the Gigabit Ethernet interface. The range is from 0 to 21. The interface number identifies the specific front panel GE port on the 22-port SCGE.
all	Displays statistics of all ports for inter-rack switches.
brief	Displays transmit and receive statistics on the GE ports.
detail	Displays MIB like detailed switch port statistics that include transmit, receive, and error packet counts.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Task ID

Task ID	Operations
fabric	read
root-system	read
admin	read

Examples

The following example shows sample output on the port statistics counters for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch inter-rack statistics all brief 
location f0/sc0/cpu0

Port          Tx Frames   Tx Errors   Rx Frames   Rx Errors

-----------------------------------------------------------

GE_Port_0 :      374423           0     1776848           0

GE_Port_1 :      251232           0      170742           0

GE_Port_2 :      857923           0      414409           0

GE_Port_3 :      239437           0      152772           0

GE_Port_4 :      166166           0       82031           0

GE_Port_5 :           0           0           0           0

GE_Port_6 :           0           0           0           0

...

...

GE_Port_16 :           0           0           0           0

GE_Port_17 :           0           0           0           0

GE_Port_18 :           0           0           0           0

GE_Port_19 :           0           0           0           0

GE_Port_20 :           0           0           0           0

GE_Port_21 :           0           0           0           0

To_5618    :      522072           0      293720           0

Stacking   :        1482           0           0           0

Stacking   :           0           0           0           0

The following example shows sample output for the detailed statistics per port for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch inter-rack statistics 0 detail 
location f0/sc0/cpu0

GE_Port_0 

 Rx fragment            :          0    Tx fragment           :          0 

 Rx unicast             :    1642337    Tx unicast            :     379927 

 Rx multicast           :      51619    Tx multicast          :     205950 

 Rx broadcast           :      91436    Tx broadcast          :     150357 

 Rx FCS error           :          0    Tx FCS error          :          0 

 Rx Pause               :          0    Tx Pause              :          0 

 Rx Undersize           :          0    Tx Oversize           :          0 

 Rx FFP drop            :          0    Tx CFI drop           :          0 

 Rx Control frame       :          0    Tx Cell error         :          0 

                                        Tx Jabber             :          0

                                        Tx excessive collision:          0

                                        Tx tagged vlan        :          0

                                        Tx abort              :          0

Table 2 describes the significant fields shown in the display.

Table 2 show controllers switch inter-rack statistics Field Descriptions 

Field	Description
Port	Logical port number. The range is from 0 to 21 and corresponds to the ports on the front panel.
Tx Frames	Transmit frame counter.
Tx Errors	Transmit cell error counter.
Rx Frames	Receive frame counter.
Rx Errors	Receive code error counter.
Rx fragment	Receive fragment counter.
Rx unicast	Receive unicast frame counter.
Rx multicast	Receive multicast frame counter.
Rx broadcast	Receive broadcast frame counter.
Rx FCS error	Receive FCS error frame counter.
Rx Pause	Receive pause frame counter.
Rx Undersize	Receive undersize frame counter.
Rx FFP drop	Packets dropped by FFP counter.
Rx Control frame	Receive control frame counter.
Tx fragment	Transmit fragment counter.
Tx unicast	Transmit unicast frame counter.
Tx multicast	Transmit multicast frame counter
Tx broadcast	Transmit broadcast frame counter
Tx FCS error	Transmit FCS error frame counter
Tx Pause	Transmit pause control frame counter.
Tx Oversize	Transmit oversize packet counter.
Tx CFI drop	Number of CFI packets dropped for this port.
Tx Cell error	Transmit cell error counter.
Tx Jabber	Transmit jabber counter.
Tx excessive collision	Transmit excessive collision frame counter.
Tx tagged vlan	Transmit tagged VLAN packet counter.
Tx abort	Transmit aborted packet counter.

show controllers switch inter-rack stp

To display information for the spanning tree protocol (STP) of inter-rack switches for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the show controllers switch inter-rack stp command in administration EXEC mode.

show controllers switch inter-rack stp {location node-id | ports interface number {location node-id} | region {location node-id}}

Syntax Description

location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.
ports interface number	Displays the number for the Gigabit Ethernet interface. The range is from 0 to 21. The interface number that identifies the specific front panel GE port on the 22-port SCGE.
region	Displays MST region configuration information that includes MST revision number, instance to VLAN mapping, and MST region name.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Task ID

Task ID	Operations
fabric	read
root-system	read
admin	read

Examples

The following sample output displays information for STP:

RP/0/RP0/CPU0:router(admin)# show controllers switch inter-rack stp location f0/sc0/cpu0

##### MST   0 vlans mapped:   2-4094

Bridge        address 5246.48f0.20ff  priority      32768 (32768 sysid 0)

Root          this switch for the CIST

Operational   hello time  1, forward delay  6, max age  8, txholdcount  6

Configured    hello time  1, forward delay  6, max age  8, max hops     4

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ---------------------------

##### MST   1 vlans mapped:   1

Bridge        address 5246.48f0.20ff  priority      32769 (32768 sysid 1)

Root          this switch for MST1

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ---------------------------

           GE_13 Desg  FWD    20000 128.  14 P2p 

           GE_14 Desg  FWD    20000 128.  15 P2p 

           GE_15 Desg  FWD    20000 128.  16 P2p 

           GE_17 Desg  FWD    20000 128.  18 P2p 

           GE_22 Desg  FWD    20000 128.  23 P2p 

Table 3 describes the significant fields shown in the display.

Table 3 show controllers switch inter-rack stp Field Descriptions 

Field	Description
MST	Multiple Spanning Tree (MST).
vlans mapped	Number of VLANs mapped.
Bridge	Part of the bridge identifier and is taken as the most significant part of the bridge ID comparisons.
Root	MAC address of Root and Priority.
Operational	Operational STP parameters.
Configured	STP configured parameters.
Interface	Interface running STP.
Role	MSTP role that includes designated, alternate, root, and backup.
Sts	Spanning tree state (STS) that includes forwarding, blocking, and learning.
Cost	Cost associated with the port.
Prio.	Priority associated with the port.

show controllers switch inter-rack udld

To display the inter-rack connection for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card, use the show controllers switch inter-rack udld command in administration EXEC mode.

show controllers switch inter-rack udld {interface number | all} location node-id

Syntax Description

interface number	Number for the Gigabit Ethernet interface. The range is from 0 to 21. The interface number identifies the specific front panel GE port on the 22-port SCGE.
all	Displays statistics of all ports for inter-rack switches.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Task ID

Task ID	Operations
fabric	read
root-system	read
admin	read

Examples

The following sample output shows who is connected to the inter-rack on the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch inter-rack udld all location 
f0/sc0/cpu0

Interface Gig port# 13

---

...

Current bidirectional state: Bidirectional

Current operational state: Advertisement - Single neighbor detected

...

...

    Entry 1

    ---

    ...

    Device name: 0_RP0_CPU0_Switch  

    Port ID: GE_Port_0  

    Neighbor echo 1 device: nodeF0_SC0_CPU0

    Neighbor echo 1 port: Gig port# 13

Table 4 describes the significant fields shown in the display.

Table 4 show controllers switch inter-rack udld Field Descriptions 

Field	Description
Interface Gig port	Interface number that identifies the specific front panel GE port on the 22-port SCGE.
Current bidirectional state	Current bidirectional state of the port is undetermined, bidirectional, or unidirectional.
Current operational state	Port operational status that includes up or error-disabled.
Device name	Connected device or neighbor.
Port ID	Port ID.
Neighbor echo 1 device	Device ID of neighbor.
Neighbor echo 1 port	Port ID of neighbor.

show controllers switch stp location

To display the STP information for intra-rack switches, use the show controllers switch stp location command in administration EXEC mode.

show controllers switch stp location node-id

Syntax Description

node-id

The node-id argument is entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The spanning tree protocol (STP) runs on links between RPs and SCs.

Task ID

Task ID	Operations
fabric	read
root-system	read

Examples

The following sample output shows how to verify information for the spanning tree for location 0/rp0/CPU0 on the RP:

RP/0/RP0/CPU0:router(admin)# show controllers switch stp location 0/rp0/Cpu0

##### MST   0 vlans mapped:   2-4094

Bridge        address 0011.93ef.e392  priority      36864 (36864 sysid 0)

Root          address 5246.48f0.20ff  priority      32768 (32768 sysid 0)

              port       GE_Port_0    path cost             0

Regional Root address 5246.48f0.20ff  priority      32768 (32768 sysid 0)

                                      internal cost     20000 rem hops  3

Operational   hello time  1, forward delay  6, max age  8, txholdcount  6

Configured    hello time  1, forward delay  6, max age  8, max hops     4

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ----------------------------

##### MST   1 vlans mapped:   1

Bridge        address 0011.93ef.e392  priority      36865 (36864 sysid 1)

Root          address 5246.48f0.20ff  priority      32769 (32768 sysid 1)

              port       GE_Port_0    cost              20000 rem hops  3

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ----------------------------

       FE_Port_1 Desg  FWD   200000 128.   2 P2p 

       GE_Port_0 Root  FWD    20000 128.  49 P2p 

The following sample output shows how to verify the connection on intra-rack switches for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch stp location f0/sc0/CPU0

##### MST   0 vlans mapped:   2-4094

Bridge        address 0800.453e.469a  priority      36864 (36864 sysid 0)

Root          address 5246.48f0.20ff  priority      32768 (32768 sysid 0)

              port       GE_Port_0    path cost             0

Regional Root address 5246.48f0.20ff  priority      32768 (32768 sysid 0)

                                      internal cost     20000 rem hops  3

Operational   hello time  1, forward delay  6, max age  8, txholdcount  6

Configured    hello time  1, forward delay  6, max age  8, max hops     4

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ---------------------------

##### MST   1 vlans mapped:   1

Bridge        address 0800.453e.469a  priority      36865 (36864 sysid 1)

Root          address 5246.48f0.20ff  priority      32769 (32768 sysid 1)

              port       GE_Port_0    cost              20000 rem hops  3

Interface        Role Sts Cost      Prio.Nbr Type

---------------- ---- --- --------- -------- ----------------------------

       FE_Port_1 Desg  FWD   200000 128.   2 P2p 

       GE_Port_0 Root  FWD    20000 128.  49 P2p 

Table 5 describes the significant fields shown in the display.

Table 5 show controllers switch stp location Field Descriptions 

Field	Description
MST	Multiple Spanning Tree Protocol (MST).
vlans mapped	VLANs mapped to MST instance.
Bridge	MAC address of Bridge and Priority.
Root	MAC address of Root and Priority.
Regional Root	Root of the MST region.
Operational	Operational STP parameters.
Configured	STP configured parameters.
Interface	Interface running STP.
Role	MSTP role that includes designated, alternate, root, and backup.
Sts	Spanning tree state (STS) that includes forwarding, blocking, and learning.
Cost	Cost of path to root.
Prio.Nbr Type	Priority of switch port.

show controllers switch stp ports

To display the Spanning Tree Protocol (STP) information for intra-rack switches, use the show controllers switch stp ports command in administration EXEC mode.

show controllers switch stp ports {FE {0 | 1} | GE {0 | 1}} location node-id

Syntax Description

FE {0 | 1}	Displays information for the Fast Ethernet (FE) port. Choose one of the following values: •0—FE port number 0. •1—FE port number 1.
GE {0 | 1}	Displays information for the Gigabit Ethernet (GE) port. Choose one of the following values: •0—GE port number 0. •1—GE port number 1.
location node-id	Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

---

Note The port numbers must match the port numbers that are displayed on the front panel of the 22-port SCGE card.

---

Task ID

Task ID	Operations
fabric	read
root-system	read

Examples

The following example shows the remote-end point that is connected to the GE link even if the remote endpoint is on a different chassis:

RP/0/RP0/CPU0:router(admin)# show controllers switch stp ports FE 1 location 0/rp0/CPU0 

FE_Port_1 of MST1 is designated forwarding 

Edge port:             no        (default) port guard :    none     (default)

Link type: point-to-point           (auto) bpdu filter: disable     (default)

Boundary : internal                        bpdu guard : disable     (default)

Bpdus (MRecords) sent 9190, received 3

Instance Role Sts Cost      Prio.Nbr Vlans mapped

-------- ---- --- --------- -------- -------------------------------

       1 Desg  FWD   200000 128.   2 1

Table 6 describes the significant fields shown in the display.

Table 6 show controllers switch stp ports Field Descriptions 

Field	Description
GE Port	Gigabit Ethernet (GE) port.
STP State	Spanning Tree Protocol (STP) state of the port

show controllers switch stp region

To display information for the spanning tree for the Multiple Spanning Tree (MST) region, use the show controllers switch stp region command in administration EXEC mode.

show controllers switch stp region location node-id

Syntax Description

location node-id

Specifies the specific RP/SC in the system in which the switches are present. This applies to location descriptions for the node-id argument as entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Task ID

Task ID	Operations
fabric	read
root-system	read

Examples

The following example displays sample output from the show controllers switch stp region command:

RP/0/RP0/CPU0:router(admin)# show controllers switch stp region location 0/rp0/CPU0

Name      [STP_1]

Revision      1 

Instances configured 2

--------  ---------------------------------------------------------------------

   0      2-4094

   1      1

------------------------------------------------------------------------------- 

show controllers switch udld location

To display the Unidirectional Link Detection (UDLD) information for intra-rack switches., use the show controllers switch udld location command in administration EXEC mode.

show controllers switch udld locationnode-id

Syntax Description

node-id

The node-id argument is entered in the rack/slot/module notation.

Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.4.1	This command was introduced on the Cisco CRS-1.
Release 3.5.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

UDLD runs on links between RPs and SCs.

Task ID

Task ID	Operations
fabric	read
root-system	read

Examples

The following sample output shows who is connected on the RP:

RP/0/RP0/CPU0:router(admin)# show controllers switch udld location 0/rp0/CPU0

Interface GE_Port_0

...

...

Current bidirectional state: Bidirectional

Current operational state: Advertisement - Single neighbor detected

...

    Entry 1

    ---

    Device name: nodeF0_SC0_CPU0  

    Port ID: Gig port# 13  

    Neighbor echo 1 device: 0_RP0_CPU0_Switch

    Neighbor echo 1 port: GE_Port_0

The following sample output shows an intra-rack connection for the 22-port Shelf Controller Gigabit Ethernet (22-port SCGE) card:

RP/0/RP0/CPU0:router(admin)# show controllers switch udld location f0/sc0/CPU0

Interface GE_Port_0

---

...

Current bidirectional state: Bidirectional

Current operational state: Advertisement - Single neighbor detected

...

    Entry 1

    ---

    ...

    Current neighbor state: Bidirectional

    Device name: nodeF0_SC0_CPU0  

    Port ID: Gig port# 22  

    Neighbor echo 1 device: F0_SC0_CPU0_Switch

    Neighbor echo 1 port: GE_Port_0

Table 7 describes the significant fields shown in the display.

Table 7 show controllers switch udld location Field Descriptions 

Field	Description
Current bidirectional state	Current bidirectional state of the port is undetermined, bidirectional, or unidirectional.
Current operational state	Port operational status that includes up or error-disabled.
Current neighbor state	Neighbor state states that the link state is observed