■GNS3でL2のPortChannelを作成してみる。 要件はとりあえず、pingが通れば良しとする。 $ gns3 --version gns3 0.8.7 ■NW概略図は以下。 $ echo "[C3] <-- fe-1/0 --> [R1] <-- Po1(fe-1/14,15) --> [R2] <-- fe1/0 --> [C4]" | \ graph-easy --dot | dot -T png -o L2-PortChannel.png ■イメージには、[c3725-adventerprisek9-mz.124-15.T14.bin]を、 C[34]には、スロットにNICを追加した。 $ awk '/\[\[|slot|image/' GNS3/Projects/L2-PortChannel/topology.net [[3620]] image = /home/labunix/GNS3/Images/ios/c3620-is-mz.123-1.image [[ROUTER C3]] slot0 = NM-1FE-TX slot1 = NM-1FE-TX [[ROUTER R1]] slot0 = NM-1FE-TX slot1 = NM-16ESW [[ROUTER R2]] slot0 = NM-1FE-TX slot1 = NM-16ESW [[ROUTER C4]] slot0 = NM-1FE-TX slot1 = NM-1FE-TX ■コンフィグは以下。 $ for n in 1 2;do \ echo " vlan database vlan 10 exit configure terminal ! hostname R${n} ! interface FastEthernet1/0 shutdown switchport mode access switchport access vlan 10 no shutdown ! interface Vlan10 shutdown ip address 192.168.0.${n} 255.255.255.0 no shutdown ! interface range FastEthernet1/14 -15 shutdown switchport trunk allowed vlan 1,2,10,200,1002-1005 switchport mode trunk channel-group 1 mode on no shutdown ! interface Port-channel1 shutdown switchport trunk allowed vlan 1,2,10,200,1002-1005 switchport mode trunk no shutdown end"; \ done $ for n in 3 4;do \ echo " configure terminal ! hostname C${n} ! interface FastEthernet1/0 shutdown ip address 192.168.0.${n} 255.255.255.0 no shutdown end"; \ done ■CDPの確認 C3#show cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater Device ID Local Intrfce Holdtme Capability Platform Port ID R1 Fas 1/0 131 R S 3620 Fas 1/0 R1#show cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater Device ID Local Intrfce Holdtme Capability Platform Port ID R2 Fas 1/15 118 R S 3620 Fas 1/15 R2 Fas 1/14 117 R S 3620 Fas 1/14 C3 Fas 1/0 157 R S 3620 Fas 1/0 R2#show cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater Device ID Local Intrfce Holdtme Capability Platform Port ID R1 Fas 1/15 162 R S 3620 Fas 1/15 R1 Fas 1/14 161 R S 3620 Fas 1/14 C4 Fas 1/0 163 R S 3620 Fas 1/0 C4#show cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater Device ID Local Intrfce Holdtme Capability Platform Port ID R2 Fas 1/0 128 R S 3620 Fas 1/0 ■ R1#show vlan-switch | include VLAN0010 10 VLAN0010 active Fa1/0 R2#show vlan-switch | include VLAN0010 10 VLAN0010 active Fa1/0 R1#show interfaces trunk Port Mode Encapsulation Status Native vlan Po1 on 802.1q trunking 1 Port Vlans allowed on trunk Po1 1-2,10,200,1002-1005 Port Vlans allowed and active in management domain Po1 1,10 Port Vlans in spanning tree forwarding state and not pruned Po1 1,10 R2#show interfaces trunk Port Mode Encapsulation Status Native vlan Po1 on 802.1q trunking 1 Port Vlans allowed on trunk Po1 1-2,10,200,1002-1005 Port Vlans allowed and active in management domain Po1 1,10 Port Vlans in spanning tree forwarding state and not pruned Po1 1,10 ■Port-channelの確認 R1#show etherchannel summary Flags: D - down P - in port-channel I - stand-alone s - suspended R - Layer3 S - Layer2 U - in use Group Port-channel Ports -----+------------+----------------------------------------------------------- 1 Po1(SU) Fa1/14(P) Fa1/15(P) R2#show etherchannel summary Flags: D - down P - in port-channel I - stand-alone s - suspended R - Layer3 S - Layer2 U - in use Group Port-channel Ports -----+------------+----------------------------------------------------------- 1 Po1(SU) Fa1/14(P) Fa1/15(P) ■pingは端から端まで通れば良い。 C4#ping 192.168.0.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 20/411/1976 m C4#show ip arp Protocol Address Age (min) Hardware Addr Type Interface Internet 192.168.0.1 0 cc01.1c2b.0000 ARPA FastEthernet1/0 Internet 192.168.0.2 3 cc02.1c2b.0000 ARPA FastEthernet1/0 Internet 192.168.0.3 2 cc00.1c2b.0010 ARPA FastEthernet1/0 Internet 192.168.0.4 - cc03.1c2b.0010 ARPA FastEthernet1/0 C3#ping 192.168.0.4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 16/20/24 ms C3#show ip arp Protocol Address Age (min) Hardware Addr Type Interface Internet 192.168.0.1 13 cc01.1c2b.0000 ARPA FastEthernet1/0 Internet 192.168.0.2 5 cc02.1c2b.0000 ARPA FastEthernet1/0 Internet 192.168.0.3 - cc00.1c2b.0010 ARPA FastEthernet1/0 Internet 192.168.0.4 1 cc03.1c2b.0010 ARPA FastEthernet1/0 ■おまけ。telnetを設定して互いにログインしてみる。 configure terminal line vty 0 4 password cisco login enable secret cisco end C4(config)# end C4# *Mar 1 00:35:17.195: %SYS-5-CONFIG_I: Configured from console by console C4#telnet 192.168.0.3 Trying 192.168.0.3 ... Open User Access Verification Password: C3>exit [Connection to 192.168.0.3 closed by foreign host] C3#telnet 192.168.0.3 Trying 192.168.0.3 ... Open User Access Verification Password: C3>exit [Connection to 192.168.0.3 closed by foreign host ■トポロジーは以下。 $ cat GNS3/Projects/L2-PortChannel/topology.net autostart = False version = 0.8.7 [127.0.0.1:7200] workingdir = /tmp udp = 10001 [[3620]] image = /home/labunix/GNS3/Images/ios/c3620-is-mz.123-1.image idlepc = 0x603d5308 sparsemem = True ghostios = True chassis = 3620 [[ROUTER C3]] model = 3620 console = 2103 aux = 2503 cnfg = configs/C3.recovered.cfg slot0 = NM-1FE-TX slot1 = NM-1FE-TX f1/0 = R1 f1/0 symbol = computer x = -298.0 y = 18.0 z = 1.0 [[ROUTER R1]] model = 3620 console = 2101 aux = 2501 cnfg = configs/R1.recovered.cfg slot0 = NM-1FE-TX slot1 = NM-16ESW f1/0 = C3 f1/0 f1/14 = R2 f1/14 f1/15 = R2 f1/15 x = -177.0 y = -180.0 z = 1.0 [[ROUTER R2]] model = 3620 console = 2102 aux = 2502 cnfg = configs/R2.recovered.cfg slot0 = NM-1FE-TX slot1 = NM-16ESW f1/0 = C4 f1/0 f1/14 = R1 f1/14 f1/15 = R1 f1/15 x = 0.0 y = -182.0 z = 1.0 [[ROUTER C4]] model = 3620 console = 2104 aux = 2504 cnfg = configs/C4.recovered.cfg slot0 = NM-1FE-TX slot1 = NM-1FE-TX f1/0 = R2 f1/0 symbol = computer x = 113.0 y = 32.0 z = 1.0 [GNS3-DATA] configs = configs
