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Cisco Bug: CSCvt25141 - Nexus 9000 interface description missing newline character for VLAN SVIs in "show interface" output

Last Modified

Jun 05, 2020

Products (65)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 93600CD-GX Switch
  • Cisco Nexus 92348GC-X Switch
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3548-XL Switch
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Known Affected Releases

7.0(3)I7(8) 9.3(3)

Description (partial)

Symptom:
A Nexus 9000 device running NX-OS software release 9.3(3) will display a VLAN SVI interface's IP address on the same line as the interface's description in the output of the "show interface" command:

N9K# show run interface vlan3600

!Command: show running-config interface Vlan3600
!Running configuration last done at: Fri Feb 21 15:08:13 2020
!Time: Mon Mar  2 07:41:47 2020

version 9.3(3) Bios:version 05.39 

interface Vlan3600
  description VPC-Peer-Link SVI
  no shutdown
  mtu 9216
  bfd interval 50 min_rx 50 multiplier 3
  bfd echo-rx-interval 50
  bfd ipv4 interval 50 min_rx 50 multiplier 3
  bfd ipv6 interval 50 min_rx 50 multiplier 3
  no ip redirects
  ip address 192.0.2.1/30
  no ipv6 redirects
  ip ospf network point-to-point
  ip router ospf UNDERLAY area 0.0.0.0
  ip pim sparse-mode

N9K# show interface vlan3600
Vlan3600 is up, line protocol is up, autostate enabled
  Hardware is EtherSVI, address is  00de.fbfb.50e7
  Description: VPC-Peer-Link SVI  Internet Address is 192.0.2.1/30    <<<
  MTU 9216 bytes, BW 1000000 Kbit, DLY 10 usec,
   reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  ARP type: ARPA
  Last clearing of "show interface" counters never
  L3 in Switched:
    ucast: 0 pkts, 0 bytes
  L3 out Switched:
    ucast: 0 pkts, 0 bytes

Alternatively, a VLAN SVI interface that does not have an IP address configured will show interface MTU, bandwidth, and delay characteristics on the same line as the interface's description:

N9K# show running-config interface vlan3600

!Command: show running-config interface Vlan3600
!Running configuration last done at: Mon Mar  2 07:47:00 2020
!Time: Mon Mar  2 07:53:32 2020

version 9.3(3) Bios:version 05.39 

interface Vlan3600
  description VPC-Peer-Link SVI
  no shutdown
  mtu 9216
  bfd interval 50 min_rx 50 multiplier 3
  bfd echo-rx-interval 50
  bfd ipv4 interval 50 min_rx 50 multiplier 3
  bfd ipv6 interval 50 min_rx 50 multiplier 3
  no ip redirects
  no ipv6 redirects
  ip ospf network point-to-point
  ip router ospf UNDERLAY area 0.0.0.0
  ip pim sparse-mode

N9K# show interface vlan 3600
Vlan3600 is up, line protocol is up, autostate enabled
  Hardware is EtherSVI, address is  00de.fbfb.50e7
  Description: VPC-Peer-Link SVI  MTU 9216 bytes, BW 1000000 Kbit, DLY 10 usec,
   reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  ARP type: ARPA
  Last clearing of "show interface" counters never
  L3 in Switched:
    ucast: 0 pkts, 0 bytes
  L3 out Switched:
    ucast: 0 pkts, 0 bytes

Conditions:
1. Nexus 9000 device running NX-OS software release 9.3(3)
2. VLAN SVI interfaces are \configured with a description
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