증상
C9100 시리즈 AP를 EWC로 변환하였을 때 AP에서는 Ping이 가능하지만 EWC에서는 Ping이 불가능
때문에 EWC로 AP가 Join 되지 못하는 증상
* EWC는 AP에 가상의 Controller를 올리는 방식으로, AP와 EWC가 공존하게 되며, 때문에 EWC도 Ping 가능해야 하고, AP도 Ping이 가능해야 합니다.
진단
EWC로 변환 후 EWC에서 Ping을 Gateway, AP로 Ping 시도
EWC#
EWC#ping 172.16.9.1 --> Gateway IP로 Ping 불가능
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.9.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
EWC#ping 172.16.9.11 --> AP IP로 Ping 불가능
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.9.11, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
EWC#wireless ewc-ap ap shell username Cisco --> EWC를 올린 AP에 접속
Cisco@192.168.255.253's password:
AP-1>en
Password:
AP-1#
AP-1#show ip interface brief
Interface IP-Address Method Status Protocol Speed Duplex
wired0 172.16.9.11 static up up 1000 full
auxiliary-client unassigned unset up up n/a n/a
apr0v0 n/a n/a up up n/a n/a
apr1v0 n/a n/a up up n/a n/a
AP-1#
AP-1#ping 172.16.9.1 --> Gateway IP로 Ping 가능
Sending 5, 100-byte ICMP Echos to 172.16.9.1, timeout is 2 seconds
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1.065/1.364/1.644 ms
AP-1#
EWC#show ap summary --> EWC에 Join된 AP가 없음
Number of APs: 0
CC = Country Code
RD = Regulatory Domain
AP Name Slots AP Model Ethernet MAC Radio MAC CC RD IP Address State Location
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
EWC#
솔루션
Wizard로 설정하는 경우 발생하지 않으며, CLI로 설정할 때 일부 버전에서 종종 발생합니다.
만약 위 증상이 발생한다면 아래와 같이 추가 설정을 해주시면 됩니다.
ap profile default-ap-profile
country KE
wireless country KE
wireless management interface GigabitEthernet0
EWC#
EWC#ping 172.16.9.1 --> Gateway IP Ping 가능
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.9.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1.065/1.364/1.644 ms
EWC#ping 172.16.9.11 --> AP IP Ping 가능
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.9.11, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1.065/1.364/1.644 ms
EWC#show ap summary --> AP도 EWC에 Join 됨
Number of APs: 2
CC = Country Code
RD = Regulatory Domain
AP Name Slots AP Model Ethernet MAC Radio MAC CC RD IP Address State Location
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
AP-1 2 C9120AXI-K ac2a.a192.7c18 10a8.294a.ee00 KE -K 172.16.9.11 Registered default location
AP-2 2 C9120AXI-K ac2a.a192.cf60 10a8.294d.8840 KE -K 172.16.9.12 Registered default location
EWC#