Network Issues on a new 5240

[Kai2209]

Hi,

i am trying to setup our new appliance 5240 model. First i was configuring the IPMI Interace with an adress of our server LAN 10.64.2.x. I was able to https and happy. Later the day i configured eth0 with a IP of the same network 10.64.2.y. I was able to ssh and https. But after doing this i was no longer able to reach the IPMI Interface via https but ssh. Is this by design?

Then i removed the connectivity from eth0 and decided to to configure eth6 and eth7 (10Gb) as a bond and plan to use vlan tagging for two networks. 10.64.2.x is our server LAN and 10.64.8.x our backup LAN. So i did following. First unconfigured all interfaced to have a clean network then...

Create the bond

     nb-appliance.Network> Linkaggregation Create eth6 eth7 802.3ad

Tag a VLAN

      nb-appliance.Network> VLAN Tag 701 bond0 10.64.2.12 255.255.254.0

      nb-appliance.Network> VLAN Tag 703 bond0 10.64.8.5 255.255.252.0

Configuration was done without any error but i was not able to ping. So i want to change the gateway and did..
    nb-appliance.Network> Gateway Add 10.64.2.1 10.64.2.1 255.255.254.0 vlan701
    nb-appliance.Network> Gateway Add 10.64.8.5 10.64.8.1 255.255.252.0 vlan703

But now i have two routes for each vlan and still not working...?!?

Can somebody she a little light into this. Network should be configured correctly...i hope

thanks

Kai

[Kai2209]

ok i did the whole configuration again but shlightly different. I tagged just the VLAN to bond0 and configured in an later step the IP address with a gateway. 

Create the bond

     nb-appliance.Network> Linkaggregation Create eth6 eth7 802.3ad

Tag a VLAN

      nb-appliance.Network> VLAN Tag 701 bond0

      nb-appliance.Network> VLAN Tag 703 bond0

Configure the VLAN with an IP

      nb-appliance.Network> Configure 10.64.2.12 255.255.254.0 10.64.2.1 vlan701

      nb-appliance.Network> Configure 10.64.8.5 255.255.252.0 10.64.8.1 vlan703

Now i can reach both gateways but i am still wondering why there is no gateway for the appropriate ip address. It is using just the last config step as a default gateway !?!?

I am expecting someting like...

Destination               Gateway           Genmask                 Iface

10.64.2.0                  10.64.2.1          255.255.254.0          vlan701

10.64.8.0                   10.64.2.1.        255.255.252.0          vlan703

but now i have...

Destination               Gateway           Genmask                 Iface

10.64.2.0                  0.0.0.0              255.255.254.0          vlan701

10.64.8.0                  0.0.0.0              255.255.252.0          vlan703

0.0.0.0                      10.64.8.1          255.255.254.0          vlan703 

Somebody any ideas?

thanks

Kai

[josef_honc1]

Hello Kai,

The parameter for gateway in Network - Configure command is actually default gateway, so in first command you set default gatway to 10.64.2.1 and with second command you've overwritten that to 10.64.8.1

Gateway 0.0.0.0 means that the network is localy connected.  There should be only one default gateway to other subnets. So your last configuration is correct.

Josef

[RiaanBadenhorst]

Destination               Gateway           Genmask                 Iface

10.64.2.0                  0.0.0.0              255.255.254.0          vlan701

10.64.8.0                  0.0.0.0              255.255.252.0          vlan703

0.0.0.0                      10.64.8.1          255.255.254.0          vlan703 

First entry says, if you want to get to 10.64.2.0 network, go out via interface vlan701

Second entry says, if you want to get to 10.64.8.0 network, go out via interface vlan703

Last entry says, if you want to anywhere else, go via vlan703

The gateways you put don't show in the first two networks as the route shown is local, so gateway is not required to get there.

[Kai2209]

first thanks for your helpful replies...

i was not aware that the gateway in Network - Configure command just sets the default gateway. This helps to understand.

But unfortunately i cannot ping any other host from my appliance except the default gateway for both subnets (10.64.2.1 and 10.64.8.1) I am somehow lost now

[andrew_mcc1]

The Appliance CLISH Network command is a bit confusing - "Network > Configure" will add an IP address AND set (overwrite) the default gateway. Once the default gateway is setup you probably want to use "Network > IPv4" to add additional addresses to NICs, Bonds or VLANs.

Andrew

[Kai2209 · Accepted solution]

thanks Andrew the CLISH is really required getting used to. And the documentation is sometines not correct. For example the configure command needs a gateway to work but in some documents the show the command without any gateway...

Despite i fixed or better the network guys fixed it. So it was a problem due to 802.3ad and Nexus switches :(

Thanks again for all replies!