VSS-Enabled Campus Best Practice Configuration Example

Figure A-1 illustrates the baseline best practice configuration required to set up basic VSS enabled network. The circle indicates the essential steps required to create the VSS systems from standalone. The red text highlights the important CLI information with VSS configuration. Comments are provided in blue italic font.

Figure A-1 Overall VSS-Enabled Campus Best Practice Configuration Summary

 

End-to-End Device Configurations

The end-to-end devices configuration is categorized into three major sections. Each section configuration contains specific CLI which is a required as part of best practice configuration and corresponding explanation.

  • VSS and L2 Domain- Includes above base configuration as well as L2 domain configuration
  • Access-layer- Sample L2 domain configuration
  • L3 Domain - Includes global L3 configuration for VSS and core routers. Then separate section for specifics topologies (ECMP and MEC) for EIGRP and OSPF. In addition, the core devices configuration shown below are standalone router/devices.

VSS Specific

VSS Global Configuration

switch virtual domain 10 ! Must configure unique domain ID
switch mode virtual
switch 1 priority 110 ! Not needed, helps in operational mgmt
switch 2 priority 100 ! Not needed, helps in operational mgmt
dual-active exclude interface GigabitEthernet1/5/3 ! Connectivity to VSS during dual active
mac-address use-virtual ! Required for consistent MAC address
dual-active detection pagp trust channel-group 202 ! Enhanced PAgP based dual active detection
 
redundancy ! Default SSO Enabled
main-cpu
auto-sync running-config
mode sso
 

Switch 1

interface Port-channel1 ! Unique port-channel number for SW 1
description VSL Link from Switch 1
no switchport
no ip address
switch virtual link 1 ! Defines switch ID for SW 1
mls qos trust cos
no mls qos channel-consistency
 
interface ten 1/5/4
channel-group 1 mode on ! EC mode is ON – EtherChannel Managemeent Protocol off
interface ten 1/1/1
channel-group 1 mode on

Switch 2

interface Port-channel2 ! Unique port-channel number for SW 1
description VSL Link from Switch 2
no switchport
no ip address
switch virtual link 2 ! Defines switch ID for SW 2
mls qos trust cos
no mls qos channel-consistency
 
interface ten 2/5/4
channel-group 2 mode on ! EC mode is ON - EtherChannel Managemeent Protocoloff
interface ten 2/1/1
channel-group 2 mode on
 

Layer-2 Domain

VSS

udld enable
vtp domain campus-test
vtp mode transparent
spanning-tree mode rapid-pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
spanning-tree vlan 2-999 priority 24576 ! STP Root
port-channel load-balance src-dst-mixed-ip-port ! Enhanced hash algorithem
vlan 400 ! VLANs spanning multiple access-layer SWs
name L2_ Spaned_VLAN _400
vlan 450
name L2_ Spaned_VLAN _450
vlan 500
name L2_ Spaned_VLAN _500
vlan 550
name L2_ Spaned_VLAN _550
vlan 600
name L2_ Spaned_VLAN _600
vlan 650
name L2_Spaned_VLAN_650
vlan 900
name NetMgmt_VLAN_900
vlan 999
name Unused_Port_VLAN_999
vlan 2
name cr7-3750-Stack-Data-VLAN
!
vlan 102
name cr7-3750-Stack-Voice-VLAN
interface Vlan2 ! Sample VLAN interface configuration
ip address 10.120.2.1 255.255.255.0
no ip redirects
no ip unreachables
ip flow ingress
ip pim sparse-mode
logging event link-status
hold-queue 150 in
hold-queue 150 out
!

VSS—Multi-Chassis EtherChannel

PAgP

interface GigabitEthernet1/8/23 ! Interface on SW 1
description Access Switch Facing Interface
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport mode dynamic desirable ! Trunk mod dynamic and desirable
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900 ! Only allow need VLANs for a given trunk
logging event link-status ! Logging for link status
logging event trunk-status ! Logging for trunk status
logging event bundle-status ! Logging for port-channel status
load-interval 30
mls qos trust dscp
channel-protocol pagp
channel-group 202 mode desirable ! Define Port-channel, PAgP mode desirable
interface GigabitEthernet2/8/23 ! Interface on SW 2
description Access Switch Facing Interface
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport mode dynamic desirable
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900
logging event link-status
logging event trunk-status
logging event bundle-status
load-interval 30
mls qos trust dscp
load-interval 30
channel-protocol pagp
channel-group 202 mode desirable
interface Port-channel202 ! Automatically created by defining at interfaces
description Access Switch MEC
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900
logging event link-status
logging event spanning-tree status ! STP logging enabled on port-channel
load-interval 30
mls qos trust dscp
spanning-tree portfast ! Optional - helps during initialization
hold-queue 2000 out
 

LACP

LACP Sample Configuration

interface GigabitEthernet1/8/23
description Access Switch Facing Interface
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport mode dynamic desirable
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900
logging event link-status
logging event trunk-status
logging event bundle-status
load-interval 30
mls qos trust dscp
channel-protocol lacp
channel-group 202 mode active
hold-queue 2000 out
interface GigabitEthernet2/8/23
description Access Switch Facing Interface
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport mode dynamic desirable
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900
logging event link-status
logging event trunk-status
logging event bundle-status
load-interval 30
mls qos trust dscp
channel-protocol lacp
channel-group 202 mode active
hold-queue 2000 out
 
interface Port-channel202 ! Automatically created by defining at interfaces
description Access Switch MEC
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 202
switchport trunk allowed vlan 2,102,400,450,500,550,600,650,900
logging event link-status
logging event spanning-tree status
load-interval 30
mls qos trust dscp
spanning-tree portfast ! Optional - helps during initialization
hold-queue 2000 out

Access-Layer Switch

Sample Configuration (Platform Specific Configuration Varies)

interface GigabitEthernet0/27
description Uplink to VSS Switch Gig 1/8/24
switchport trunk encapsulation dot1q
switchport trunk native vlan 203
switchport mode dynamic desirable
switchport trunk allowed vlan 3,103,400,450,500,550,600,650,900
logging event link-status
logging event trunk-status
logging event bundle-status
carrier-delay msec 0
srr-queue bandwidth share 1 70 25 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mls qos trust dscp
channel-protocol pagp
channel-group 1 mode desirable
 
interface GigabitEthernet0/28
description Uplink to VSS Switch Gig 2/8/24
switchport trunk encapsulation dot1q
switchport trunk native vlan 203
switchport trunk allowed vlan 3,103,400,450,500,550,600,650,900
switchport mode dynamic desirable
logging event link-status
logging event trunk-status
logging event bundle-status
carrier-delay msec 0
srr-queue bandwidth share 1 70 25 5
srr-queue bandwidth shape 3 0 0 0
priority-queue out
mls qos trust dscp
channel-protocol pagp
channel-group 1 mode desirable
 
 
interface Port-channel1 ! Automatically created by defining at interfaces
description EC Uplink to VSS
switchport trunk encapsulation dot1q
switchport trunk native vlan 203
switchport trunk allowed vlan 3,103,400,450,500,550,600,650,900
switchport mode dynamic desirable
logging event link-status
logging event spanning-tree status
carrier-delay msec 0
spanning-tree portfast ! Optional - helps during initialization
 
 

Layer-3 Domain

The Layer 3 domain represents VSS interconnection to the core-layer. The core-layer devices configuration shown below are standalone router/switch.

Global Configuration

mls ip cef load-sharing <option> ! Apply Campus Best Practices

Multicast

VSS

ip multicast-routing
ip pim rp-address 10.122.100.1 GOOD-IPMC override ! RP mapping with filter
ip access-list standard GOOD-IPMC
permit 224.0.1.39
permit 224.0.1.40
permit 239.192.240.0 0.0.3.255
permit 239.192.248.0 0.0.3.255

Core 1 Standalone Router (No VSS)

Core RP ANYCAST - Primary

ip multicast-routing
interface Loopback0
description MSDP PEER INT ! MSDP Loopback
ip address 10.122.10.1 255.255.255.255
interface Loopback1
description ANYCAST RP ADDRESS (PRIMARY) ! Anycast RP Primary
ip address 10.122.100.1 255.255.255.255
interface Loopback2
description Garbage-CAN RP
ip address 2.2.2.2 255.255.255.255
interface Port-channel1 ! Core 1- Core2 L3 for MSDP
description Channel to Peer Core Node
dampening
ip address 10.122.0.18 255.255.255.254
ip pim sparse-mode
load-interval 30
carrier-delay msec 0
mls qos trust dscp
ip access-list standard GOOD-IPMC
permit 224.0.1.39
permit 224.0.1.40
permit 239.192.240.0 0.0.3.255
permit 239.192.248.0 0.0.3.255
ip msdp peer 10.122.10.2 connect -source Loopback0 ! MSDP Configuration
ip msdp description 10.122.10.2 ANYCAST-PEER-6k-core-2
ip msdp cache -sa-state
ip msdp originator-id Loopback0
 

Core 2 Standalone Router (No VSS)

ip multicast-routing
interface Loopback0
description MSDP PEER INT
ip address 10.122.10.2 255.255.255.255
interface Loopback1
description ANYCAST RP ADDRESS
ip address 10.122.100.1 255.255.255.255 ! Secondary ANYCAST RP
delay 600
interface Loopback2
description Garbage-CAN RP
ip address 2.2.2.2 255.255.255.255
interface Port-channel1
description Channel to Peer Core node
dampening
ip address 10.122.0.19 255.255.255.254
ip pim sparse-mode
load-interval 30
carrier-delay msec 0
mls qos trust dscp
ip pim rp-address 10.122.100.1 GOOD-IPMC override
ip access-list standard GOOD-IPMC
permit 224.0.1.39
permit 224.0.1.40
permit 239.192.240.0 0.0.3.255
permit 239.192.248.0 0.0.3.255
ip msdp peer 10.122.10.1 connect-source Loopback0
ip msdp description 10.122.10.1 ANYCAST-PEER-6k-core-1
ip msdp cache-sa-state
ip msdp originator-id Loopback0
 

EIGRP MEC

VSS

router eigrp 100
passive-interface default
no passive-interface Port-channel200
no passive-interface Port-channel201
network 10.0.0.0
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
no auto-summary
eigrp router-id 10.122.102.1
eigrp event-log-size 3000
nsf ! Enable NSF Capability
 
interface Port-channel200 ! Create L3 MEC Interface first
description 20 Gig MEC to CORE-1 (cr2-6500-1 4/1-4/3)
no switchport
dampening
ip address 10.122.0.26 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.125.0.0 255.255.0.0 5 ! Summarization for Access-subnets
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface Port-channel201
description 20 Gig to CORE-2 (cr2-6500-1 4/1-4/3)
no switchport
dampening
ip address 10.122.0.21 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.125.0.0 255.255.0.0 5
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
interface TenGigabitEthernet1/2/1
description 10 GigE to Core 1
no switchport
no ip address
logging event link-status
logging event bundle-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
channel-protocol pagp
channel-group 200 mode desirable
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet1/2/2
description 10 GigE to Core 2
no switchport
no ip address
logging event link-status
logging event bundle-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
channel-protocol pagp
channel-group 201 mode desirable
hold-queue 2000 in
hold-queue 2000 out
 
interface TenGigabitEthernet2/2/1
description to core 1
no switchport
no ip address
logging event link-status
logging event bundle-status
logging event spanning-tree status
load-interval 30
mls qos trust dscp
channel-protocol pagp
channel-group 200 mode desirable
hold-queue 2000 in
hold-queue 2000 out
 
interface TenGigabitEthernet2/2/2
description 10 GigE to Core 2
no switchport
no ip address
logging event link-status
logging event bundle-status
load-interval 30
mls qos trust dscp
channel-protocol pagp
channel-group 201 mode desirable
hold-queue 2000 in
hold-queue 2000 out
 

Core 1 Standalone Router (No VSS)

router eigrp 100
passive-interface default
no passive-interface Port-channel1
no passive-interface Port-channel20
no passive-interface Port-channel221
network 10.0.0.0
no auto-summary
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
eigrp event-log-size 3000
interface Port-channel20
description 20 Gig MEC to VSS 1/2/1 2/2/1
dampening
ip address 10.122.0.27 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 2 Standalone Router (No VSS)

router eigrp 100
passive-interface default
no passive-interface Port-channel1
no passive-interface Port-channel20
no passive-interface Port-channel221
network 10.0.0.0
no auto-summary
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
eigrp event-log-size 3000
interface Port-channel21
description 20 Gig to VSS 1/2/2-2/2/2
dampening
ip address 10.122.0.20 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
 

EIGRP ECMP

VSS

router eigrp 100
passive-interface default
no passive-interface TenGigabitEthernet1/2/1
no passive-interface TenGigabitEthernet1/2/2
no passive-interface TenGigabitEthernet2/2/1
no passive-interface TenGigabitEthernet2/2/2
network 10.0.0.0
no auto-summary
eigrp router-id 10.122.102.1
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
eigrp event-log-size 3000
nsf ! Enable NSF Capability
interface TenGigabitEthernet1/2/1
description 10 GigE to Core 1
no switchport
dampening
ip address 10.122.0.26 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet1/2/2
description 10 GigE to Core 2
no switchport
dampening
ip address 10.122.0.23 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
interface TenGigabitEthernet2/2/1
description to Core 1
no switchport
dampening
ip address 10.122.0.32 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet2/2/2
description 10 GigE to Core 2
no switchport
dampening
ip address 10.122.0.20 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip summary-address eigrp 100 10.120.0.0 255.255.0.0 5
logging event link-status
load-interval 30
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 1 Standalone Router (No VSS)

router eigrp 100
passive-interface default
no passive-interface TenGigabitEthernet4/1
no passive-interface TenGigabitEthernet4/3
network 10.0.0.0
no auto-summary
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
eigrp event-log-size 3000
interface TenGigabitEthernet4/1
description To VSS Ten1/2/1
dampening
ip address 10.122.0.27 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
interface TenGigabitEthernet4/3
description To VSS Ten2/2/1
dampening
ip address 10.122.0.33 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
logging event bundle-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 2 Standalone Router (No VSS)

router eigrp 100
passive-interface default
no passive-interface TenGigabitEthernet4/1
no passive-interface TenGigabitEthernet4/3
network 10.0.0.0
no auto-summary
eigrp log-neighbor-warnings
eigrp log-neighbor-changes
eigrp event-log-size 3000
interface TenGigabitEthernet4/1
description To VSS Ten 1/2/2
dampening
ip address 10.122.0.22 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
interface TenGigabitEthernet4/3
description To VSS Ten 2/2/2
dampening
ip address 10.122.0.21 255.255.255.254
ip flow ingress
ip pim sparse-mode
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
 

OSPF MEC

VSS

router ospf 100
router-id 10.122.0.235
log-adjacency-changes detail
auto-cost reference-bandwidth 20000 ! Optional
nsf ! Enable NSF Capability
area 120 stub no-summary
area 120 range 10.120.0.0 255.255.0.0 cost 10
area 120 range 10.125.0.0 255.255.0.0 cost 10
passive-interface default
no passive-interface Port-channel200
no passive-interface Port-channel201
network 10.120.0.0 0.0.255.255 area 120
network 10.122.0.0 0.0.255.255 area 0
network 10.125.0.0 0.0.255.255 area 120
interface Port-channel200
description 20 Gig MEC to VSS (cr2-6500-1 4/1-4/3)
no switchport
dampening
ip address 10.122.0.26 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface Port-channel201
description 20 Gig to VSS (cr2-6500-1 4/1-4/3)
no switchport
dampening
ip address 10.122.0.21 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 1 Standalone Router No VSS)

router ospf 100
router-id 10.254.254.7
log-adjacency-changes detail ! Helps in NSF Restart Activities
auto-cost reference-bandwidth 20000 ! Optional
passive-interface default
no passive-interface Port-channel1
no passive-interface Port-channel20
network 10.122.0.0 0.0.255.255 area 0
interface Port-channel20
description 20 Gig MEC to VSS 1/2/1 2/2/1
dampening
ip address 10.122.0.27 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 2 Standalone Router (No VSS)

router ospf 100
router-id 10.254.254.7
log-adjacency-changes detail
auto-cost reference-bandwidth 20000 ! Optional
passive-interface default
no passive-interface Port-channel1
no passive-interface Port-channel20
network 10.122.0.0 0.0.255.255 area 0
interface Port-channel21
description 20 Gig to VSS 1/2/2-2/2/2
dampening
ip address 10.122.0.20 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
 

OSPF ECMP

VSS

router ospf 100
router-id 10.122.0.235
log-adjacency-changes detail
auto-cost reference-bandwidth 20000 ! Optional
nsf ! Enable NSF Capability
area 120 stub no-summary
area 120 range 10.120.0.0 255.255.0.0 cost 10
area 120 range 10.125.0.0 255.255.0.0 cost 10
passive-interface default
no passive-interface TenGigabitEthernet1/2/1
no passive-interface TenGigabitEthernet1/2/2
no passive-interface TenGigabitEthernet2/2/1
no passive-interface TenGigabitEthernet2/2/2
network 10.120.0.0 0.0.255.255 area 120
network 10.122.0.0 0.0.255.255 area 0
network 10.125.0.0 0.0.255.255 area 120
interface TenGigabitEthernet1/2/1
description 10 GigE to Core 1
no switchport
dampening
ip address 10.122.0.26 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet1/2/2
description 10 GigE to Core 2
no switchport
dampening
ip address 10.122.0.23 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet2/2/1
description to Core 1
no switchport
dampening
ip address 10.122.0.32 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
interface TenGigabitEthernet2/2/2
description 10 GigE to Core 2
no switchport
dampening
ip address 10.122.0.20 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 1 Standalone Router (No VSS)

router ospf 100
router-id 10.254.254.7
log-adjacency-changes detail
auto-cost reference-bandwidth 20000 ! Optional
passive-interface default
no passive-interface GigabitEthernet2/5
no passive-interface TenGigabitEthernet4/1
no passive-interface TenGigabitEthernet4/3
no passive-interface Port-channel1
network 10.122.0.0 0.0.255.255 area 0
interface TenGigabitEthernet4/1
description To VSS Ten1/2/1
dampening
ip address 10.122.0.27 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
!
interface TenGigabitEthernet4/3
description To VSS Ten2/2/1
dampening
ip address 10.122.0.33 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out

Core 2 Standalone Router (No VSS)

router ospf 100
router-id 10.254.254.7
log-adjacency-changes detail
auto-cost reference-bandwidth 20000 ! Optional
passive-interface default
no passive-interface GigabitEthernet2/5
no passive-interface TenGigabitEthernet4/1
no passive-interface TenGigabitEthernet4/3
no passive-interface Port-channel1
network 10.122.0.0 0.0.255.255 area 0
interface TenGigabitEthernet4/1
description To VSS Ten 1/2/2
dampening
ip address 10.122.0.22 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out
!
!
interface TenGigabitEthernet4/3
description To VSS Ten 2/2/2
dampening
ip address 10.122.0.21 255.255.255.254
ip flow ingress
ip pim sparse-mode
ip ospf network point-to-point
logging event link-status
load-interval 30
carrier-delay msec 0
mls qos trust dscp
hold-queue 2000 in
hold-queue 2000 out