Unable to ping router from PC

[Gianluchko]

Hi guys, I have been spending quite a lot of time to figure this out, why I am unable to ping from PC to routers?
I am trying to create 3 different office location and I did all the IP Addressing table as per below.

Location	Department	Hosts	IP address	Subnet Mask	Available Hosts	Available Networks	Network Address	First Available Address	Last Available Address	Broadcast Address
Bristol	HQ (ISP)	200	192.168.0.0	/24	254	1	192.168.0.0	192.168.0.1	192.168.0.254	192.168.0.255
Bristol	HQ (Servers)	192.168.10.0	/24	192.168.10.0	192.168.10.2	192.168.10.254	192.168.10.255
Bristol	HQ (Servers)	192.168.20.0	/24	192.168.20.0	192.168.20.3	192.168.20.254	192.168.20.255
Glasgow	VID	134	192.168.1.0	/24	254	1	192.168.1.0	192.168.1.1	192.168.1.254	192.168.1.255
Glasgow	LID	126	192.168.2.0	/25	126	2	192.168.2.0	192.168.2.1	192.168.2.126	192.168.2.127
Cardiff	HID	40	192.168.2.128	/26	62	4	192.168.2.128	192.168.2.129	192.168.2.190	192.168.2.191
Cardiff	TID	16	192.168.2.192	/27	30	8	192.168.2.192	192.168.2.193	192.168.2.222	192.168.2.223

I am quite confident this address table is correct; however, when I am trying to work around the Cardiff Area, I am unable to ping from PC1-24-HID to Router Cardiff and from PC1-24-HID to PC1-24-TID. I have activate ospf in Bristol HQ router and Cardif router, I also tried with static route, but nothing, I am unable to make devices go outside the network and ping other devices.

[Flavio Miranda]

"I see, so I need to connect maybe switches in a daisy chain and then connect one switch to the router in gig0/0 - 0/2."

 Yes, from the router´s side, use one "physical interface" then to expand the network, use daisy chain.

"Also I did not quite get this "That´s where the subinterface take place. You can not use two router´s interface on the same network.Keep in mind that for routers, each interface must hold its own IP address."
Does it mean that this below is wrong?"

 No..I was not meant connection between routers, I was meant connection between router and switches.

For connection between router´s an switches, subinterface allows you to use one Physical interface and then you can have different "subinterfaces" with different ip address.

"If I want to connect Router 0, which is a small office to Router 1, which is a router that provides connection to ISP. I do not have to treat the gig0/0 of Router 0 in the same subnet (/30) of Router 1 interface gig0/0?"

yes, for this you are right.

[Gianluchko]

So to clarify this, I can connect only three physical interfaces to a router and make six logical interfaces, I cannot connect more than 3 physical interfaces?

[Flavio Miranda]

You are getting there but not exactly what you said.

You can use any physical connection you want but each physical connection needs to be in one network.

 You can use one physical connection and multiples logical connection by using subinterfaces.

 There is no limit of three interface. And you can have multiples subinterface

I highly recommend this

https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-software-releases-122-mainline/15096-idb-limit.html#max_no_interfaces 

[Gianluchko]

That makes sense, I can have only 1 per network, of course!!!!
Now I need to understand more about subinterfaces and how to configure those.

Thank you agaiN!!

[Flavio Miranda]

Yeah, Take a read about router, interface and subinterface

This is going to help  you.