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Nexus 5596 svi - strange

ronald.spicka
Level 1
Level 1

hi all,

I currently got 2 nexus 5596 to do some tests

First of all i wanted to create a management if without using mgmt0 (i use this if for vpc-peer)

So what i did is:

create a vlan

create a vrf

enable feature interface-vlan

create a interface vlan within this vrf and set a ip

enable a trunk with this vlan

on one of the nexus it works, on the other not .. really strange

vlan is up and got a spanning-tree forwarding port

but on the strange switch the layer 3 if is down/down

both switches are 5596 with 5.1.3

anyone ever experienced such an issue?

thanks!

1 Accepted Solution

Accepted Solutions

Hmm, sounds strange. Can you verify it came with the base license installed. I've seen that before where the base license didn't get installed and the switch wouldn't do something. I can't remember if it was that the SVI wouldn't come online or something else...

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View solution in original post

32 Replies 32

AJ Cruz
Level 3
Level 3

Do you mean for the peer keepalive link? Do you have M or F cards?

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It's a nx 5596 not an 7k

i use the mgmt0 is used for the vpc peer keepalive yes

Oh ya ><

It sounds like a vPC issue maybe.

What does a "sh vPC" on each switch show? Also, can you post the vPC and peer link config?

Sent from Cisco Technical Support iPad App

it have the same issue if i remove the vpc config und just add a normal trunk between both switches (even after wr er)

Here are some details (vlan 3801 is used for l3):

Working switch:

switch2# sho inter vlan 3801

Vlan3801 is up, line protocol is up

  Hardware is EtherSVI, address is  547f.ee09.e6c1

  Internet Address is 172.24.128.5/24

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec

switch2# sho vpc

Legend:

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

vPC domain id                   : 10

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, operational primary

Number of vPCs configured       : 1

Peer Gateway                    : Disabled

Dual-active excluded VLANs      : -

Graceful Consistency Check      : Enabled

vPC Peer-link status

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

id   Port   Status Active vlans

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

1    Po1    up     3801-3811

vPC status

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

id     Port        Status Consistency Reason                     Active vlans

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

10     Po10        up     success     success                    3801-3811

on the other switch:

switch1# sho inter vlan 3801

Vlan3801 is down, line protocol is down

  Hardware is EtherSVI, address is  547f.ee2f.d2c1

  Internet Address is 172.24.128.6/24

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec

switch1# sho vpc

Legend:

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

vPC domain id                   : 10

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                        : primary, operational secondary

Number of vPCs configured       : 1

Peer Gateway                    : Disabled

Dual-active excluded VLANs      : -

Graceful Consistency Check      : Enabled

vPC Peer-link status

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

id   Port   Status Active vlans

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

1    Po1    up     3801-3811

vPC status

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

id     Port        Status Consistency Reason                     Active vlans

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

10     Po10        up     success     success                    3801-3811

switch1# sho vlan id 3801

VLAN Name                             Status    Ports

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

3801 vmware_mng                       active    Po1, Po10

switch1# sho feature | i enabled

fex                   1         enabled

interface-vlan        1         enabled

lacp                  1         enabled

lldp                  1         enabled

sshServer             1         enabled

telnetServer          1         enabled

udld                  1         enabled

vpc                   1         enabled

switch1:

interface Vlan3801

  no shutdown

  vrf member poc_vpc

  ip address 172.24.128.6/24

interface mgmt0

  vrf member management

  ip address 192.168.1.1/24

interface port-channel1

  switchport mode trunk

  switchport trunk allowed vlan 3801-3811

  spanning-tree port type network

  speed 10000

  vpc peer-link

Hmm, sounds strange. Can you verify it came with the base license installed. I've seen that before where the base license didn't get installed and the switch wouldn't do something. I can't remember if it was that the SVI wouldn't come online or something else...

Sent from Cisco Technical Support iPad App

there is a difference between both switches:

switch2:

LAN_BASE_SERVICES_PKG         No    -   Unused             -

switch1:

LAN_BASE_SERVICES_PKG         Yes   -   In use Never       -

hm, strange, if lan_base is in use l3 doesn't work .. does that make sense?

Ya that makes sense. I've seen it before where the missing base license caused problems with some L3 feature, I just couldn't remember if it was specifically the SVI wouldn't go up.

Sent from Cisco Technical Support iPad App

That's it

I cleared the license for LAN_BASE_SERVICES_PKG and now the interface is up

Thanks a lot for your help!

could it be, that this lic is used for the L3 daughter cards?

No the L3 card requires the advanced license, the 5596 wont even recognize the L3 daughtercard without the advanced license, but there are basic L3 stuff the switch will do, apparently only with the base license.

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But the base lic is not installed and it works .. now i am getting confused

Feature                      Ins  Lic   Status Expiry Date Comments

LAN_BASE_SERVICES_PKG         No    -   Unused             -

Hmm, that IS weird. Here's the licensing doc:

http://www.cisco.com/en/US/docs/switches/datacenter/sw/nx-os/licensing/guide/b_Cisco_NX-OS_Licensing_Guide_chapter_01.html

So the one WITH the base license installed was the one that wasn't working?

Sent from Cisco Technical Support iPad App

yes, with the lic installed the l3 interface didn't work

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