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Changing the network settings for Messaging Gateway

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Article ID: 171429

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Updated On:

Products

Messaging Gateway

Issue/Introduction

Moving a Messaging Gateway (SMG) Control Center or Scanner from an existing network to a different network or subnet.

Resolution

Login to the command line locally (For physical servers with monitor and keyboard or for VM's in the virtual console) as admin.

  1. Check the existing IP's by runing the command `ifconfig`
  2. Look for an ETH0 and possibly an ETH1
    1.      Make a note of "inet addr:" for each interface
    2.      Make a note of "Mask:" for the subnet of each interface
  3. If a change is needed, run command,
    ifconfig eth0 <IP> netmask <netmask> 
    Where <IP> is replaced by the IP you want to configure and <netmask> is replaced by the netmask
  4. Confirm the default gateway still has the expected configuration by running the `route` command
  5. Look for the IP in the row labeled default and the Gateway column is the default gateway. If that doesn't exist, then the default gateway was removed by the ifconfig command.
  6. Confirm with the customer that all these settings are correct
  7. To add a default gateway, run the following command where IP is replaced by the IP of the default gateway
    route add default gw <IP> eth0

This will temporarily modify the network configuration on the SMG appliance or VM. To make this change permanent the network configuration values will need to be updated in the SMG Control Center Administration > Configuration page.

Example

smg [10.7.5-4]> ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
      inet 192.168.1.25  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::215:5dff:fe01:2401  prefixlen 64  scopeid 0x20<link>
        ether 00:15:5d:01:24:01  txqueuelen 1000  (Ethernet)
        RX packets 818602  bytes 955360223 (911.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 221529  bytes 1194953562 (1.1 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
      inet 192.168.1.26  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::215:5dff:fe01:2402  prefixlen 64  scopeid 0x20<link>
        ether 00:15:5d:01:24:02  txqueuelen 1000  (Ethernet)
        RX packets 616  bytes 108044 (105.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5  bytes 446 (446.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1079  bytes 98079 (95.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1079  bytes 98079 (95.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

smg [10.7.5-4]> route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         gateway         0.0.0.0         UG    0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
smg [10.7.5-4]> route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1   0.0.0.0         UG    0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
smg [10.7.5-4]> ifconfig eth0 10.20.30.40 netmask 255.255.255.0
smg [10.7.5-4]> ifconfig eth0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.20.30.40  netmask 255.255.255.0  broadcast 10.20.30.255
        inet6 fe80::215:5dff:fe01:2402  prefixlen 64  scopeid 0x20<link>
        ether 00:15:5d:01:24:02  txqueuelen 1000  (Ethernet)
        RX packets 616  bytes 108044 (105.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5  bytes 446 (446.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
smg [10.7.5-4]> route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.20.30.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
smg [10.7.5-4]> route add default gw 10.20.30.1 eth0
smg [10.7.5-4]> route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.20.30.1   0.0.0.0         UG    0      0        0 eth0
10.20.30.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1