N9K vPC Track
The HSRP is configured on vPC. The active HSRP router is SD001. If the L3 uplink is down, the traffic towards will be blackholed.
Configure Track on vPC peers. Each SD has 2 separate L3 uplinks. Use 2 tracks to detect physical interface line protocol. Use a track list to include tracks. Apply track list under vPC domain.
- Shut down vPC domain if one of the links is down. Choose track list boolean and.
- Shut down vPC domain if both links are down. Choose track list boolean or.
track 1 interface Ethernet1/3 line-protocol
track 2 interface Ethernet1/4 line-protocol
track 10 list boolean or
object 1
object 2
vpc domain 50
track 10
Normal track status.
SD002# show trac
trace track
SD002# show track
Track 1
Interface Ethernet1/3 Line Protocol
Line Protocol is UP
3 changes, last change 00:01:10
Tracked by:
Track List 10
Track 2
Interface Ethernet1/4 Line Protocol
Line Protocol is UP
1 changes, last change 00:05:27
Tracked by:
Track List 10
Track 10
List Boolean or
Boolean or is UP
2 changes, last change 00:01:45
Track List Members:
object 2 UP
object 1 UP
Tracked by:
vPCM Domain 50
Boolean or track status with 1 link down.
SD002(config-track)# show track
Track 1
Interface Ethernet1/3 Line Protocol
Line Protocol is DOWN
2 changes, last change 00:00:58
Tracked by:
Track List 10
Track 2
Interface Ethernet1/4 Line Protocol
Line Protocol is UP
1 changes, last change 00:03:59
Tracked by:
Track List 10
Track 10
List Boolean or
Boolean or is UP
2 changes, last change 00:00:16
Track List Members:
object 2 UP
object 1 DOWN
Boolean and track status with 1 link down.
SD002(config-if)# show track
Track 1
Interface Ethernet1/3 Line Protocol
Line Protocol is DOWN
2 changes, last change 00:00:05
Tracked by:
Track List 10
Track 2
Interface Ethernet1/4 Line Protocol
Line Protocol is UP
1 changes, last change 00:03:05
Tracked by:
Track List 10
Track 10
List Boolean and
Boolean and is DOWN
2 changes, last change 00:00:05
Track List Members:
object 2 UP
object 1 DOWN
Track status when both links are down.
SD002# show track
Track 1
Interface Ethernet1/3 Line Protocol
Line Protocol is DOWN
6 changes, last change 00:00:09
Tracked by:
Track List 10
Track 2
Interface Ethernet1/4 Line Protocol
Line Protocol is DOWN
4 changes, last change 00:00:09
Tracked by:
Track List 10
Track 10
List Boolean or
Boolean or is DOWN
5 changes, last change 00:00:09
Track List Members:
object 2 DOWN
object 1 DOWN
Tracked by:
vPCM Domain 50
VPC domain is shut down due to track 10 failure.
SD002# show vpc
Legend:
(*) – local vPC is down, forwarding via vPC peer-link
vPC domain id : 50
Peer status : peer link is down
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : secondary
Number of vPCs configured : 3
Track object : 10
Peer Gateway : Enabled
Dual-active excluded VLANs : –
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 150s)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Delay-restore Orphan-port status : Timer is off.(timeout = 0s)
Operational Layer3 Peer-router : Disabled
Virtual-peerlink mode : Disabled
vPC Peer-link status
———————————————————————
id Port Status Active vlans
— —- —— ————————————————-
1 Po12 up –
vPC status
—————————————————————————-
Id Port Status Consistency Reason Active vlans
— ———— —— ———– —— —————
10 Po10 down failed Peer-link is down –
30 Po30 down failed Peer-link is down –
200 Po200 down failed Peer-link is down –
When I unshut the uplink ports, the vPC port channels will be restored once the delay restore timer is up.
vpc domain 50
delay restore 150
track 10
SD002# show vpc
Legend:
(*) – local vPC is down, forwarding via vPC peer-link
vPC domain id : 50
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : secondary
Number of vPCs configured : 3
Track object : 10
Peer Gateway : Enabled
Dual-active excluded VLANs : –
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is on.(timeout = 150s, 11s left)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Delay-restore Orphan-port status : Timer is off.(timeout = 0s)
Operational Layer3 Peer-router : Disabled
Virtual-peerlink mode : Disabled
vPC Peer-link status
———————————————————————
id Port Status Active vlans
— —- —— ————————————————-
1 Po12 up 1,10,20,30
vPC status
—————————————————————————-
Id Port Status Consistency Reason Active vlans
— ———— —— ———– —— —————
10 Po10 down* success success –
30 Po30 down* success success –
200 Po200 down* success success –
If the uplink is only 1 port channel, we can use only 1 track of port channel line protocol status and apply the single track under vPC domain.