Can't create SVI on Cisco 2951

[discovery26]

Hi

We have a CME router Cisco 2951. We bought another one to act as backup. I've copied most of the config from Primary CME to Backup CME. For some reason I can't create interface VLAN(SVI) on the Backup CME. They have similar iOS and hardware (except ISM module) so not sure what is the diference.

Primary CME 2951

CMEGW-01#show ver
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(3)M3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Mon 20-Jun-16 16:16 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M13, RELEASE SOFTWARE (fc1)

CMEGW-01 uptime is 5 weeks, 4 days, 20 hours, 51 minutes
System returned to ROM by power-on
System restarted at 17:36:00 gmt Wed Jul 13 2016
System image file is "flash:c2951-universalk9-mz.SPA.155-3.M3.bin"
Last reload type: Normal Reload
Last reload reason: power-on


Cisco CISCO2951/K9 (revision 1.1) with 471040K/53248K bytes of memory.
4 Gigabit Ethernet interfaces
31 Serial interfaces
2 terminal lines
1 Channelized E1/PRI port
8 Voice FXS interfaces
1 Internal Services Module (ISM) with Services Ready Engine (SRE)
   Cisco Unity Express 8.0.5 in slot/sub-slot 0/0
DRAM configuration is 72 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
250880K bytes of ATA System CompactFlash 0 (Read/Write)



Suite License Information for Module:'c2951'

--------------------------------------------------------------------------------
Suite                 Suite Current         Type           Suite Next reboot
--------------------------------------------------------------------------------
FoundationSuiteK9     None                  None           None
securityk9
datak9

AdvUCSuiteK9          None                  None           None
uck9
cme-srst
cube


Technology Package License Information for Module:'c2951'

------------------------------------------------------------------------
Technology    Technology-package                  Technology-package
              Current              Type           Next reboot
------------------------------------------------------------------------
ipbase        ipbasek9             Permanent      ipbasek9
security      None                 None           None
uc            uck9                 Permanent      uck9
data          None                 None           None

Configuration register is 0x2102

CMEGW-01#show inventory
NAME: "CISCO2951/K9", DESCR: "CISCO2951/K9 chassis, Hw Serial#: FCZ162420UU, Hw Revision: 1.1"
PID: CISCO2951/K9      , VID: V05 , SN: FCZ162420UU

NAME: "VWIC3-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 0", DESCR: "VWIC3-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC3-1MFT-T1/E1  , VID: V01 , SN: FOC16020NTL

NAME: "3rd generation four port FXS DID voice interface daughtercard on Slot 0 SubSlot 1", DESCR: "3rd generation four port FXS DID voice interface daughtercard"
PID: VIC3-4FXS/DID     , VID: V03 , SN: FOC18044NBV

NAME: "3rd generation four port FXS DID voice interface daughtercard on Slot 0 SubSlot 2", DESCR: "3rd generation four port FXS DID voice interface daughtercard"
PID: VIC3-4FXS/DID     , VID: V03 , SN: FOC18044NCW

NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 32 Channels"
PID: PVDM3-32          , VID: V01 , SN: FOC16200WVB

NAME: "PVDM3 DSP DIMM with 64 Channels on Slot 0 SubSlot 5", DESCR: "PVDM3 DSP DIMM with 64 Channels"
PID: PVDM3-64          , VID: V01 , SN: FOC162634FL

NAME: "Internal Services Module with Services Ready Engine on Slot 0", DESCR: "Internal Services Module with Services Ready Engine"
PID: ISM-SRE-300-K9    , VID: V02 , SN: FOC162427JN

NAME: "C2921/C2951 AC Power Supply", DESCR: "C2921/C2951 AC Power Supply"
PID: PWR-2921-51-AC    , VID: V03 , SN: DCA1612K0P8

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

Backup CME 2951

CMEGW-02#show ver
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(1)T2, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 27-May-15 07:11 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)

CMEGW-02 uptime is 3 hours, 45 minutes
System returned to ROM by reload at 10:47:27 gmt Mon Aug 22 2016
System restarted at 10:50:14 gmt Mon Aug 22 2016
System image file is "flash0:c2951-universalk9-mz.SPA.155-1.T2.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command


Cisco CISCO2951/K9 (revision 1.1) with 481280K/43008K bytes of memory.
Processor board ID FCZ2032B11W
3 Gigabit Ethernet interfaces
28 Serial interfaces
1 terminal line
1 Channelized E1/PRI port
4 Voice FXS interfaces
DRAM configuration is 72 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
502992K bytes of ATA System CompactFlash 0 (Read/Write)


Suite License Information for Module:'c2951'

--------------------------------------------------------------------------------
Suite                 Suite Current         Type           Suite Next reboot
--------------------------------------------------------------------------------
FoundationSuiteK9     None                  None           None
securityk9
datak9

AdvUCSuiteK9          None                  None           None
uck9
cme-srst
cube


Technology Package License Information for Module:'c2951'

------------------------------------------------------------------------
Technology    Technology-package                  Technology-package
              Current              Type           Next reboot
------------------------------------------------------------------------
ipbase        ipbasek9             Permanent      ipbasek9
security      None                 None           None
uc            uck9                 Permanent      uck9
data          None                 None           None

Configuration register is 0x2102

CMEGW-02#show inventory
NAME: "CISCO2951/K9", DESCR: "CISCO2951/K9 chassis, Hw Serial#: FCZ2032B11W, Hw Revision: 1.1"
PID: CISCO2951/K9      , VID: V06 , SN: FCZ2032B11W

NAME: "VWIC3-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 0", DESCR: "VWIC3-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC3-1MFT-T1/E1  , VID: V01 , SN: FOC20218QE2

NAME: "3rd generation four port FXS DID voice interface daughtercard on Slot 0 SubSlot 1", DESCR: "3rd generation four port FXS DID voice interface daughtercard"
PID: VIC3-4FXS/DID     , VID: V03 , SN: FOC2024529Q

NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 32 Channels"
PID: PVDM3-32          , VID: V01 , SN: FOC20240UBD

NAME: "C2921/C2951 AC Power Supply", DESCR: "C2921/C2951 AC Power Supply"
PID: PWR-2921-51-AC    , VID: V03 , SN: DCA2019K1TF

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

I read that to use switch commands I would need etherswitch module but I don't have it in the Primary CME.

Kind Regards

Michael

[Hector Gustavo Serrano Gutierrez]

SVIs are can be created when the device has Layer 2 ports that can be configured to be part of the same VLAN as the SVI. The Cisco 2951 only have Layer 3 ports unless a Switch module is installed.

Could you please add a full 'show run' of your Primary CME Router?

[discovery26]

Hi Hector

Thank you for checking the config.

I'm confused as the Primary CME has got ISM with SRE module which was used for Voicemail but we don't need it as backup.

The module shouldn't provide the switch capability for the routers so not sure what is.

Regards

[Mark Malone]

hmmm there's no intervlan routing on that config and no vlans in use at all from what I see its pure layer 3 router no switching in place

and I agree with Hector you need a switching module to do SVIs on router as I have quite a view variations of them throughout our network

[discovery26]

Hi Mark

On the primary CME there is

interface Vlan1
 description $ES_LAN$
 no ip address

I can't create one on secondary although it have almost the same iOS and hardware so am I missing something?

[Mark Malone]

Hi

That's not in use no ip address on it , if svi has no ip address its no doing anything at L3

im still trying to figure how that's on a 2951 without an SM as I cant do it on any of mine that are pure L3

Do you have the syntax for this command ----show vlan ?

That will really tell confirm if its l2 at all as examole from one of my 2951s without an SM

XXXXXXXXXXX#sh vlan
% Ambiguous command:  "sh vlan "
XXXXXXXXXXX#sh ver | i 295
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.2(4)M2, RELEASE SOFTWARE (fc2)
System image file is "flash0:c2951-universalk9-mz.SPA.152-4.M2.bin"

[discovery26]

Hi Mark

Primary CME

CMEGW-01#show vlan
% Ambiguous command:  "show vlan"
CMEGW-01#show ver | i 295
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(3)M3, RELEASE SOFTWARE (fc2)
System image file is "flash:c2951-universalk9-mz.SPA.155-3.M3.bin"
Cisco CISCO2951/K9 (revision 1.1) with 471040K/53248K bytes of memory.
*1        CISCO2951/K9          FCZ162420UU
Suite License Information for Module:'c2951'
Technology Package License Information for Module:'c2951'
CMEGW-01#show inter vlan 1
Vlan1 is up, line protocol is up
  Hardware is EtherSVI, address is a493.4ca7.ad03 (bia a493.4ca7.ad03)
  Description: $ES_LAN$
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 5w5d, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     8 packets input, 688 bytes, 0 no buffer
     Received 8 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     5880 packets output, 452760 bytes, 0 underruns
     0 output errors, 4 interface resets
     8 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out

CMEGW-01(config)#interface vl?
Vlan

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

Backup CME

CMEGW-02#show vlan
% Ambiguous command:  "show vlan"
CMEGW-02#sho ver | in 295
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(1)T2, RELEASE SOFTWARE (fc1)
System image file is "flash0:c2951-universalk9-mz.SPA.155-1.T2.bin"
Cisco CISCO2951/K9 (revision 1.1) with 481280K/43008K bytes of memory.
*1        CISCO2951/K9          FCZ2032B11W
Suite License Information for Module:'c2951'
Technology Package License Information for Module:'c2951'
CMEGW-02#show interfaces v?
Vif  Virtual-PPP  Virtual-Template  Virtual-TokenRing
vmi

CMEGW-02#show interfaces vl?
% Unrecognized command

CMEGW-02(config)#interface vl?
% Unrecognized command

[Mark Malone · Accepted solution]

Yes that's a pure layer 3 router no layer 2 at all in place or else you would have a vlan output even if nothings configured

disregard that vlan 1 statement its not doing anything and it shouldn't be there , there is no requirement form looking at the config to even try replicate that , im still confused how its even there on primary as it layer 3 router maybe something to do with the ISM but I can confirm its not doing anything and does not require to be on the new backup router

CMEGW-01#show vlan
% Ambiguous command:  "show vlan"

[discovery26]

It was puzzling for me and I wasn't sure if it's needed but had some issues when connecting backup CME.

Now I rebuild it and it's working fine.

Thank you for your support.

Regards