Cisco 2901 router can i use Ethernet Switch rather then Ethernet Routed-Port for ITSP SIP Connectivity

[anilkumar.cisco]

Hello Team,

I have existing 2901 router.. where both gig interface of the router has been consumed.. Now customer is looking for upgrading there existing E1 PRI connection to SIP.. but we don't have spare interface.. but in stock i have EHWIC-4ESG ( as per data sheet it is Ethernet switch).. not ethernet router port...

My question is whether i can use it or not for ITSP connection.. if yes.. then how?

[Leo Laohoo]

I'm asking the most basic question: How does the SIP server contact the SIP provider?
So far, I haven't receive any sign that there is a route from the inside to the outside.

[anilkumar.cisco]

The SIP provider will give an IP address to us of /30 subnet, which we need to assign on our routable Ethernet port of the router and an SBC IP address.. we need to point SIP traffic on SBC destination via static route source from our L3 interface..


Do u have any other idea for SIP connectivity or any other alternative as per my scenario

[anilkumar.cisco]

Hello Leo,

As per my colleague.. the following scenario work.

keep 2901 as it is.
insert Ethernet module and assign interface vlan/30 interace with ip address given by ITSP SIP provider..
give an static route in router for reaching SIP Server via new Vlan interface..
return traffic will be given by ITSP Sip server provider on new interface vlan .
Kindly advise..

[anilkumar.cisco]

Hello Team,
Today I tried to simulate the scenario..
Customer L3 switch (3560 v2 as L3 switch , IP routing enable)-->>vlan 144 (port F0/2) -- Gig0/0-->> Cisco Voice Gateway (2951)-->> ETHWIC Card installed ( Int vlan 175)- Connected to -- ITSP SIP provider router (Dummy ) with 10.50.175.62/30 IP address.

From the customer network connected to L3 Switch.. is able to ping only 10.50.175.62 but not 10.50.175.61 (ITSP IP address).. Same is from Switch interface as well.. but from the Customer router.. he is able to ping ITSP IP address i.e. 10.50.175.62 .. All routing and static routing is configure..
Just want to reconfirm.. that this is happening because EHWIC card is LAN based.. thus router is not able to do routing on this interface..
below is the device configuration..

Customer L3 switch..
+++++++++++++++++++


Switch#sh run
Building configuration...

Current configuration : 2363 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Switch
!
boot-start-marker
boot-end-marker
!
!
!
!
no aaa new-model
system mtu routing 1500
authentication mac-move permit
ip subnet-zero
ip routing
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface FastEthernet0/1
switchport access vlan 142
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 144
switchport mode access
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface FastEthernet0/25
!
interface FastEthernet0/26
!
interface FastEthernet0/27
!
interface FastEthernet0/28
!
interface FastEthernet0/29
!
interface FastEthernet0/30
!
interface FastEthernet0/31
!
interface FastEthernet0/32
!
interface FastEthernet0/33
!
interface FastEthernet0/34
!
interface FastEthernet0/35
!
interface FastEthernet0/36
!
interface FastEthernet0/37
!
interface FastEthernet0/38
!
interface FastEthernet0/39
!
interface FastEthernet0/40
!
interface FastEthernet0/41
!
interface FastEthernet0/42
!
interface FastEthernet0/43
!
interface FastEthernet0/44
!
interface FastEthernet0/45
!
interface FastEthernet0/46
!
interface FastEthernet0/47
!
interface FastEthernet0/48
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface GigabitEthernet0/3
!
interface GigabitEthernet0/4
!
interface Vlan1
no ip address
shutdown
!
interface Vlan142
ip address 10.10.10.142 255.255.255.0
!
interface Vlan144
ip address 14.82.144.31 255.255.255.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 14.82.144.30
ip http server
!
ip sla enable reaction-alerts
!
!
line con 0
line vty 5 15
!
end

Switch#

Switch#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES unset administratively down down
Vlan142 10.10.10.142 YES manual up up
Vlan144 14.82.144.31 YES manual up up
FastEthernet0/1 unassigned YES unset up up
FastEthernet0/2 unassigned YES unset up up
FastEthernet0/3 unassigned YES unset down down
FastEthernet0/4 unassigned YES unset down down
FastEthernet0/5 unassigned YES unset down down
FastEthernet0/6 unassigned YES unset down down
FastEthernet0/7 unassigned YES unset down down
FastEthernet0/8 unassigned YES unset down down
FastEthernet0/9 unassigned YES unset down down
FastEthernet0/10 unassigned YES unset down down
FastEthernet0/11 unassigned YES unset down down
FastEthernet0/12 unassigned YES unset down down
FastEthernet0/13 unassigned YES unset down down
FastEthernet0/14 unassigned YES unset down down
FastEthernet0/15 unassigned YES unset down down
FastEthernet0/16 unassigned YES unset down down
FastEthernet0/17 unassigned YES unset down down
FastEthernet0/18 unassigned YES unset down down
FastEthernet0/19 unassigned YES unset down down
FastEthernet0/20 unassigned YES unset down down
FastEthernet0/21 unassigned YES unset down down
FastEthernet0/22 unassigned YES unset down down
FastEthernet0/23 unassigned YES unset down down
FastEthernet0/24 unassigned YES unset down down
FastEthernet0/25 unassigned YES unset down down
FastEthernet0/26 unassigned YES unset down down
FastEthernet0/27 unassigned YES unset down down
FastEthernet0/28 unassigned YES unset down down
FastEthernet0/29 unassigned YES unset down down
FastEthernet0/30 unassigned YES unset down down
FastEthernet0/31 unassigned YES unset down down
FastEthernet0/32 unassigned YES unset down down
FastEthernet0/33 unassigned YES unset down down
FastEthernet0/34 unassigned YES unset down down
FastEthernet0/35 unassigned YES unset down down
FastEthernet0/36 unassigned YES unset down down
FastEthernet0/37 unassigned YES unset down down
FastEthernet0/38 unassigned YES unset down down
FastEthernet0/39 unassigned YES unset down down
FastEthernet0/40 unassigned YES unset down down
FastEthernet0/41 unassigned YES unset down down
FastEthernet0/42 unassigned YES unset down down
FastEthernet0/43 unassigned YES unset down down
FastEthernet0/44 unassigned YES unset down down
FastEthernet0/45 unassigned YES unset down down
FastEthernet0/46 unassigned YES unset down down
FastEthernet0/47 unassigned YES unset down down
FastEthernet0/48 unassigned YES unset down down
GigabitEthernet0/1 unassigned YES unset down down
GigabitEthernet0/2 unassigned YES unset down down
GigabitEthernet0/3 unassigned YES unset down down
GigabitEthernet0/4 unassigned YES unset down down
Switch#


Switch#sh ver
Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(53)SE2, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Wed 21-Apr-10 05:33 by prod_rel_team
Image text-base: 0x01000000, data-base: 0x02A00000

ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(53r)SEY4, RELEASE SOFTWARE (fc1)

Switch uptime is 2 hours, 12 minutes
System returned to ROM by power-on
System image file is "flash:c3560-ipbase-mz.122-53.SE2.bin"

cisco WS-C3560V2-48TS (PowerPC405) processor (revision P0) with 131072K bytes of memory.
Processor board ID FDO1702Y0N6
Last reset from power-on
3 Virtual Ethernet interfaces
48 FastEthernet interfaces
4 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : B4:E9:B0:25:B2:80
Motherboard assembly number : 73-12632-01
Power supply part number : 341-0328-02
Motherboard serial number : FDO170206KH
Power supply serial number : DCA1652M17P
Model revision number : P0
Motherboard revision number : F0
Model number : WS-C3560V2-48TS-S
System serial number : FDO1702Y0N6
Top Assembly Part Number : 800-33165-03
Top Assembly Revision Number : B0
Version ID : V08
CLEI Code Number : CMMEJ00BRB
Hardware Board Revision Number : 0x01


Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3560V2-48TS 12.2(53)SE2 C3560-IPBASE-M


Configuration register is 0xF

Switch#

++++++++++++++++==
Customer voice gateway where ITSP link need to be terminated..
++++++++++++++++++++++++++++++++++++++++
Router#sh run
Building configuration...

Current configuration : 2138 bytes
!
! Last configuration change at 08:48:34 UTC Mon Mar 23 2020
version 15.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!


!
!
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
license udi pid CISCO2951/K9 sn FGL181312G8
license boot module c2951 technology-package datak9
!
!
!
redundancy
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
ip address 14.82.144.30 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 14.82.144.30 255.255.255.0
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/2
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/0/0
switchport access vlan 175
no ip address
!
interface GigabitEthernet0/0/1
no ip address
!
interface GigabitEthernet0/0/2
no ip address
!
interface GigabitEthernet0/0/3
no ip address
!
interface GigabitEthernet0/1/0
no ip address
!
interface GigabitEthernet0/1/1
no ip address
!
interface GigabitEthernet0/1/2
no ip address
!
interface GigabitEthernet0/1/3
no ip address
!
interface GigabitEthernet0/2/0
no ip address
!
interface GigabitEthernet0/2/1
no ip address
!
interface GigabitEthernet0/2/2
no ip address
!
interface GigabitEthernet0/2/3
no ip address
!
interface GigabitEthernet0/3/0
no ip address
!
interface GigabitEthernet0/3/1
no ip address
!
interface GigabitEthernet0/3/2
no ip address
!
interface GigabitEthernet0/3/3
no ip address
!
interface Vlan1
no ip address
!
interface Vlan175
ip address 10.50.175.62 255.255.255.252
!
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 14.82.144.31
ip route 10.50.175.0 255.255.255.0 10.50.175.61
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output lat pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end


Router#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES unset administratively down down
GigabitEthernet0/0 14.82.144.30 YES manual up up
GigabitEthernet0/1 14.82.144.30 YES manual administratively down down
GigabitEthernet0/2 unassigned YES unset administratively down down
GigabitEthernet0/0/0 unassigned YES unset up up
GigabitEthernet0/0/1 unassigned YES unset down down
GigabitEthernet0/0/2 unassigned YES unset down down
GigabitEthernet0/0/3 unassigned YES unset down down
GigabitEthernet0/1/0 unassigned YES unset down down
GigabitEthernet0/1/1 unassigned YES unset down down
GigabitEthernet0/1/2 unassigned YES unset down down
GigabitEthernet0/1/3 unassigned YES unset down down
GigabitEthernet0/2/0 unassigned YES unset down down
GigabitEthernet0/2/1 unassigned YES unset down down
GigabitEthernet0/2/2 unassigned YES unset down down
GigabitEthernet0/2/3 unassigned YES unset down down
GigabitEthernet0/3/0 unassigned YES unset down down
GigabitEthernet0/3/1 unassigned YES unset down down
GigabitEthernet0/3/2 unassigned YES unset down down
GigabitEthernet0/3/3 unassigned YES unset down down
Vlan1 unassigned YES unset down down
Vlan175 10.50.175.62 YES manual up up
Router#

Router#sh ver
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.3(3)M5, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Feb-15 09:19 by prod_rel_team

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

Router uptime is 4 hours, 26 minutes
System returned to ROM by power-on
System image file is "flash0:c2951-universalk9-mz.SPA.153-3.M5.bin"
Last reload type: Normal Reload
Last reload reason: power-on



This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco CISCO2951/K9 (revision 1.1) with 479232K/45056K bytes of memory.
Processor board ID FGL181312G8
19 Gigabit Ethernet interfaces
1 terminal line
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)


License Info:

License UDI:

-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 CISCO2951/K9 FGL181312G8



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 None None None
data datak9 RightToUse datak9
NtwkEss None None None
CollabPro None None None

Configuration register is 0x2102

Router#

+++++++++++++++++++++

ITSP router configuration
+++++++++++++++++++++


Router#sh run
Building configuration...

Current configuration : 1387 bytes
!
! Last configuration change at 06:07:22 UTC Mon Mar 23 2020
version 15.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!


!
!
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
license udi pid CISCO2951/K9 sn FGL18421127
license boot module c2951 technology-package datak9
hw-module usb disable
!
!
!
redundancy
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
ip address 10.50.175.61 255.255.255.252
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/2
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/0/0
no ip address
!
interface GigabitEthernet0/0/1
no ip address
!
interface GigabitEthernet0/0/2
no ip address
!
interface GigabitEthernet0/0/3
no ip address
!
interface Vlan1
no ip address
!
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output lat pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end

Router#

Router#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 10.50.175.61 YES manual up up
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
GigabitEthernet0/2 unassigned YES NVRAM administratively down down
GigabitEthernet0/0/0 unassigned YES unset down down
GigabitEthernet0/0/1 unassigned YES unset down down
GigabitEthernet0/0/2 unassigned YES unset down down
GigabitEthernet0/0/3 unassigned YES unset down down
Vlan1 unassigned YES unset down down
Router#



Router#sh ver
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.3(3)M5, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Feb-15 09:19 by prod_rel_team

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

Router uptime is 3 hours, 55 minutes
System returned to ROM by power-on
System image file is "flash0:c2951-universalk9-mz.SPA.153-3.M5.bin"
Last reload type: Normal Reload
Last reload reason: power-on



This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco CISCO2951/K9 (revision 1.1) with 485376K/38912K bytes of memory.
Processor board ID FGL18421127
7 Gigabit Ethernet interfaces
1 terminal line
DRAM configuration is 72 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
255488K bytes of ATA System CompactFlash 0 (Read/Write)


License Info:

License UDI:

-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 CISCO2951/K9 FGL18421127



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 None None None
data datak9 RightToUse datak9
NtwkEss None None None
CollabPro None None None

Configuration register is 0x2102

Router#

++++++++++++++++++++++++++++

thanks friends..

Best Regards
Anil Singh

[anilkumar.cisco · Accepted solution]

It is working now, as reverse route was missing ITSP (router 2) router..

Only challenge is that.. if we are creating Multiple SVI’s on EHWIC-4ESG.. then only on SVI line protocol is up rest are down.. because it is LAN based module.

But I am able to meet my desired result