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N5K FabricPath/vPC+

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Ernesto Fernandez gomez-pinto
Level 1
Level 1

‎02-03-2014 04:40 AM - edited ‎03-07-2019 05:58 PM

Hello,

I have problem with vPC`+ in N5K. I think that all my setup it's ok but my peers are not reachables in fabricpath in the vpc domain.

n5k-del-1(config)# show vpc

Legend:

                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 21

vPC+ switch id                    : 121

Peer status                       : peer adjacency formed ok

vPC keep-alive status             : peer is alive

vPC fabricpath status             : peer is not reachable through fabricpath

Configuration consistency status  : success

Per-vlan consistency status       : success

Type-2 consistency status         : success

vPC role                          : primary

Number of vPCs configured         : 0

Peer Gateway                      : Disabled

Dual-active excluded VLANs        : -

Graceful Consistency Check        : Enabled

Auto-recovery status              : Enabled (timeout = 240 seconds)

vPC Peer-link status

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

id   Port   Status Active vlans

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

1    Po1    up     -

n5k-del-2(config)# show vpc

Legend:

                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 21

vPC+ switch id                    : 121

Peer status                       : peer adjacency formed ok

vPC keep-alive status             : peer is alive

vPC fabricpath status             : peer is not reachable through fabricpath

Configuration consistency status  : success

Per-vlan consistency status       : success

Type-2 consistency status         : success

vPC role                          : secondary

Number of vPCs configured         : 0

Peer Gateway                      : Disabled

Dual-active excluded VLANs        : -

Graceful Consistency Check        : Enabled

Auto-recovery status              : Enabled (timeout = 240 seconds)

vPC Peer-link status

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

id   Port   Status Active vlans

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

1    Po1    up     -

n5k-del-1(config)# show run int port-channel 1

!Command: show running-config interface port-channel1

!Time: Tue Mar  3 12:31:16 2009

version 6.0(2)N2(3)

interface port-channel1

  switchport mode fabricpath

  spanning-tree port type network

  vpc peer-link

n5k-del-1(config)# show port-channel summary

Flags:  D - Down        P - Up in port-channel (members)

        I - Individual  H - Hot-standby (LACP only)

        s - Suspended   r - Module-removed

        S - Switched    R - Routed

        U - Up (port-channel)

        M - Not in use. Min-links not met

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

Group Port-       Type     Protocol  Member Ports

      Channel

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

1     Po1(SU)     Eth      LACP      Eth1/1(P)    Eth1/2(P)    Eth1/17(P)

                                     Eth1/18(P)

n5k-del-2(config)# show run int port-channel 1

!Command: show running-config interface port-channel1

!Time: Tue Mar  3 12:33:57 2009

version 6.0(2)N2(3)

interface port-channel1

  switchport mode fabricpath

  spanning-tree port type network

  vpc peer-link

n5k-del-2(config)# show port-channel summary

Flags:  D - Down        P - Up in port-channel (members)

        I - Individual  H - Hot-standby (LACP only)

        s - Suspended   r - Module-removed

        S - Switched    R - Routed

        U - Up (port-channel)

        M - Not in use. Min-links not met

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

Group Port-       Type     Protocol  Member Ports

      Channel

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

1     Po1(SU)     Eth      LACP      Eth1/1(P)    Eth1/2(P)    Eth1/17(P)

                                     Eth1/18(P)

n5k-del-1(config)# show run fabricpath

!Command: show running-config fabricpath

!Time: Tue Mar  3 12:32:02 2009

version 6.0(2)N2(3)

install feature-set fabricpath

feature-set fabricpath

vpc domain 21

  fabricpath switch-id 121

interface port-channel1

  switchport mode fabricpath

interface Ethernet1/1

  switchport mode fabricpath

interface Ethernet1/2

  switchport mode fabricpath

interface Ethernet1/17

  switchport mode fabricpath

interface Ethernet1/18

  switchport mode fabricpath

fabricpath domain default

fabricpath switch-id 21

n5k-del-2(config)# show run fabricpath

!Command: show running-config fabricpath

!Time: Tue Mar  3 12:31:17 2009

version 6.0(2)N2(3)

install feature-set fabricpath

feature-set fabricpath

vpc domain 21

  fabricpath switch-id 121

interface port-channel1

  switchport mode fabricpath

interface Ethernet1/1

  switchport mode fabricpath

interface Ethernet1/2

  switchport mode fabricpath

interface Ethernet1/17

  switchport mode fabricpath

interface Ethernet1/18

  switchport mode fabricpath

fabricpath domain default

fabricpath switch-id 22

n5k-del-1(config)# show run vpc

!Command: show running-config vpc

!Time: Tue Mar  3 12:36:23 2009

version 6.0(2)N2(3)

feature vpc

vpc domain 21

  role priority 100

  peer-keepalive destination 10.0.0.22 source 10.0.0.21

  auto-recovery

  fabricpath switch-id 121

  ip arp synchronize

interface port-channel1

  vpc peer-link

n5k-del-2(config)# show run vpc

!Command: show running-config vpc

!Time: Tue Mar  3 12:36:01 2009

version 6.0(2)N2(3)

feature vpc

vpc domain 21

  role priority 110

  peer-keepalive destination 10.0.0.21 source 10.0.0.22

  auto-recovery

  fabricpath switch-id 121

  ip arp synchronize

interface port-channel1

  vpc peer-link

any idea?

Best Regards

Labels:
0 Helpful
1 Accepted Solution

Accepted Solutions

Go to solution
Steve Fuller
Level 9
Level 9
In response to Ernesto Fernandez gomez-pinto

‎02-03-2014 11:24 AM

Hi,

The issue you have is that you don't have any VLANs configured and operating in FabricPath mode i.e.,

!
vlan 100
  mode fabricpath
!

I just set this up using your configuration and see exactly the same behavior until a VLAN is created that then has mode fabricpath configured.

If you look at the peer-link state in the FabricPath topology and active the VLANs I think you'll see the forwarding state of the interface is DOWN and there are no active VLANs.

 
N5K-p10-1# sh fabricpath isis interface port-channel 101
Fabricpath IS-IS domain: default
Interface: port-channel101
  Status: protocol-up/link-up/admin-up
  Index: 0x0001, Local Circuit ID: 0x01, Circuit Type: L1
  No authentication type/keychain configured
  Authentication check specified
  Extended Local Circuit ID: 0x16000064, P2P Circuit ID: 0000.0000.0000.00
  Retx interval: 5, Retx throttle interval: 66 ms
  LSP interval: 33 ms, MTU: 1500
  P2P Adjs: 1, AdjsUp: 1, Priority 64
  Hello Interval: 10, Multi: 3, Next IIH: 00:00:03
  Level   Adjs   AdjsUp  Metric   CSNP  Next CSNP  Last LSP ID
  1          1        1      20     60  00:00:35   ffff.ffff.ffff.ff-ff
  Topologies enabled:
    Topology Metric  MetricConfig Forwarding
    0        20      no           DOWN
N5K-p10-1# sh fabricpath topology interface port-channel 101
Interface           Topo-Description                 Topo-ID    Topo-IF-State
------------------- -------------------------------- ---------- -------------
port-channel101     0                                0               Down
N5K-p10-1# sh fabricpath topology vlan active
Topo-Description                 Topo-ID   Active VLAN List
-------------------------------- --------- -------------------------------------
0                                0         --

If you then change the VLAN mode from mode ce to mode fabricpath (note that you need to exit the vlan configuration mode for the change to take effect), you should see the following SYSLOG message:

 
2014 Feb  3 12:50:23 N5K-p10-1 %ETHPORT-3-IF_ERROR_VLANS_REMOVED: VLANs 99-100 on Interface port-channel101 are removed from suspended state.
2014 Feb  3 12:50:23 N5K-p10-1 %L3VM-5-FP_TPG_INTF_UP: Interface port-channel101 up in fabricpath topology 0

And then show vpc will indicate that the vPC fabricpath status as "peer is reachable through fabricpath"

N5K-p10-1# sh vpc
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link
vPC domain id                   : 21
vPC+ switch id                  : 121
Peer status                     : peer adjacency formed ok
vPC keep-alive status           : peer is alive
vPC fabricpath status           : peer is reachable through fabricpath
[snip]
N5K-p10-1# show fabricpath isis interface port-channel 101
Fabricpath IS-IS domain: default
Interface: port-channel101
  Status: protocol-up/link-up/admin-up
  Index: 0x0001, Local Circuit ID: 0x01, Circuit Type: L1
  No authentication type/keychain configured
  Authentication check specified
  Extended Local Circuit ID: 0x16000064, P2P Circuit ID: 0000.0000.0000.00
  Retx interval: 5, Retx throttle interval: 66 ms
  LSP interval: 33 ms, MTU: 1500
  P2P Adjs: 1, AdjsUp: 1, Priority 64
  Hello Interval: 10, Multi: 3, Next IIH: 00:00:01
  Level   Adjs   AdjsUp  Metric   CSNP  Next CSNP  Last LSP ID
  1          1        1      20     60  00:00:47   ffff.ffff.ffff.ff-ff
  Topologies enabled:
    Topology Metric  MetricConfig Forwarding
    0        20      no           UP

TN5K-p10-1# show fabricpath topology vlan active
Topo-Description                 Topo-ID   Active VLAN List
-------------------------------- --------- -------------------------------------
0                                0         99-100







Regards

View solution in original post

4 Replies 4

Go to solution
Steve Fuller
Level 9
Level 9

‎02-03-2014 06:50 AM

Hi,

Is your port-channel 1 interface which is configured as your vPC peer-link operating as a FabricPath interface? Can you post the output of the show fabricpath isis interface brief command.

Regards

0 Helpful

Go to solution
Ernesto Fernandez gomez-pinto
Level 1
Level 1
In response to Steve Fuller

‎02-03-2014 06:56 AM

Hello,

n5k-del-1(config-if)# show fabricpath isis interface brief

Fabricpath IS-IS domain: default

Interface    Type  Idx State        Circuit   MTU  Metric  Priority  Adjs/AdjsUp

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

port-channel1 P2P   1     Up/Ready   0x01/L1   1500 10      64          1/1

n5k-del-2(config-if)# show fabricpath isis interface brief

Fabricpath IS-IS domain: default

Interface    Type  Idx State        Circuit   MTU  Metric  Priority  Adjs/AdjsUp

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

port-channel1 P2P   1     Up/Ready   0x01/L1   1500 10      64          1/1

Regards.

0 Helpful

Go to solution
Steve Fuller
Level 9
Level 9
In response to Ernesto Fernandez gomez-pinto

‎02-03-2014 11:24 AM

Hi,

The issue you have is that you don't have any VLANs configured and operating in FabricPath mode i.e.,

!
vlan 100
  mode fabricpath
!

I just set this up using your configuration and see exactly the same behavior until a VLAN is created that then has mode fabricpath configured.

If you look at the peer-link state in the FabricPath topology and active the VLANs I think you'll see the forwarding state of the interface is DOWN and there are no active VLANs.

 
N5K-p10-1# sh fabricpath isis interface port-channel 101
Fabricpath IS-IS domain: default
Interface: port-channel101
  Status: protocol-up/link-up/admin-up
  Index: 0x0001, Local Circuit ID: 0x01, Circuit Type: L1
  No authentication type/keychain configured
  Authentication check specified
  Extended Local Circuit ID: 0x16000064, P2P Circuit ID: 0000.0000.0000.00
  Retx interval: 5, Retx throttle interval: 66 ms
  LSP interval: 33 ms, MTU: 1500
  P2P Adjs: 1, AdjsUp: 1, Priority 64
  Hello Interval: 10, Multi: 3, Next IIH: 00:00:03
  Level   Adjs   AdjsUp  Metric   CSNP  Next CSNP  Last LSP ID
  1          1        1      20     60  00:00:35   ffff.ffff.ffff.ff-ff
  Topologies enabled:
    Topology Metric  MetricConfig Forwarding
    0        20      no           DOWN
N5K-p10-1# sh fabricpath topology interface port-channel 101
Interface           Topo-Description                 Topo-ID    Topo-IF-State
------------------- -------------------------------- ---------- -------------
port-channel101     0                                0               Down
N5K-p10-1# sh fabricpath topology vlan active
Topo-Description                 Topo-ID   Active VLAN List
-------------------------------- --------- -------------------------------------
0                                0         --

If you then change the VLAN mode from mode ce to mode fabricpath (note that you need to exit the vlan configuration mode for the change to take effect), you should see the following SYSLOG message:

 
2014 Feb  3 12:50:23 N5K-p10-1 %ETHPORT-3-IF_ERROR_VLANS_REMOVED: VLANs 99-100 on Interface port-channel101 are removed from suspended state.
2014 Feb  3 12:50:23 N5K-p10-1 %L3VM-5-FP_TPG_INTF_UP: Interface port-channel101 up in fabricpath topology 0

And then show vpc will indicate that the vPC fabricpath status as "peer is reachable through fabricpath"

N5K-p10-1# sh vpc
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link
vPC domain id                   : 21
vPC+ switch id                  : 121
Peer status                     : peer adjacency formed ok
vPC keep-alive status           : peer is alive
vPC fabricpath status           : peer is reachable through fabricpath
[snip]
N5K-p10-1# show fabricpath isis interface port-channel 101
Fabricpath IS-IS domain: default
Interface: port-channel101
  Status: protocol-up/link-up/admin-up
  Index: 0x0001, Local Circuit ID: 0x01, Circuit Type: L1
  No authentication type/keychain configured
  Authentication check specified
  Extended Local Circuit ID: 0x16000064, P2P Circuit ID: 0000.0000.0000.00
  Retx interval: 5, Retx throttle interval: 66 ms
  LSP interval: 33 ms, MTU: 1500
  P2P Adjs: 1, AdjsUp: 1, Priority 64
  Hello Interval: 10, Multi: 3, Next IIH: 00:00:01
  Level   Adjs   AdjsUp  Metric   CSNP  Next CSNP  Last LSP ID
  1          1        1      20     60  00:00:47   ffff.ffff.ffff.ff-ff
  Topologies enabled:
    Topology Metric  MetricConfig Forwarding
    0        20      no           UP

TN5K-p10-1# show fabricpath topology vlan active
Topo-Description                 Topo-ID   Active VLAN List
-------------------------------- --------- -------------------------------------
0                                0         99-100







Regards

Go to solution
Ernesto Fernandez gomez-pinto
Level 1
Level 1
In response to Steve Fuller

‎02-04-2014 08:09 AM

Hi steve,

You are right, i have configured one vlan as fabricpath mode and the peer is reachable.

Thks for your help.

Regards.

0 Helpful
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