My switch topology

I am going to do etherchannel for ports that have more than 1 cables connecting to each other.

This kind of topology is the simple Dual-Core switching network.

Topology using show cdp neighbors

2950-1#sh cdp neig
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
3550-2 Fas 0/2 138 S I WS-C3550-2Fas 0/2
3550-1 Fas 0/3 154 S I WS-C3550-2Fas 0/7
3550-1 Fas 0/1 143 S I WS-C3550-2Fas 0/1
2950-1#

2950-2#sh cdp nei
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone

2950-2#sh cdp neig
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
3550-2 Fas 0/3 173 S I WS-C3550-2Fas 0/7
3550-2 Fas 0/1 140 S I WS-C3550-2Fas 0/1
3550-1 Fas 0/2 143 S I WS-C3550-2Fas 0/2

3550-2#sh cdp neigh
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
2950-2 Fas 0/7 159 S I WS-C2950- Fas 0/3
2950-2 Fas 0/1 159 S I WS-C2950- Fas 0/1
2950-1 Fas 0/2 160 S I WS-C2950- Fas 0/2
3550-1 Fas 0/5 136 S I WS-C3550- Fas 0/5
3550-1 Fas 0/4 138 S I WS-C3550- Fas 0/4
3550-2#

3550-1#sh cdp neigh
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
2950-2 Fas 0/2 132 S I WS-C2950- Fas 0/2
2950-1 Fas 0/7 133 S I WS-C2950- Fas 0/3
2950-1 Fas 0/1 133 S I WS-C2950- Fas 0/1
3550-2 Fas 0/5 169 S I WS-C3550- Fas 0/5
3550-2 Fas 0/4 172 S I WS-C3550- Fas 0/4