속도가 다른 두개의 CISCO 스위치 연결 (업링크 / uplink)
[Resolved] Two Cisco Ethernet Switch uplinks with different speeds via SFP and SFP+
(Cisco Nexus 3524 -10GbE and Catalyst 3750G-24TS-24 - 1GbE)
issue : Cisco 호환 모듈 2개를 준비하여 각 스위치 의 SFP & SFP+ 포트에 장착 하고
Direct 광 점퍼케이블 을 연결 하였으나 두 스위치가 연결되지 않음 (링크 표시등 켜지지 않음)
10GbE 쪽 모듈에서는 붉은 불빛이 확인 되었으나 (모듈 인식 됨)
1GbE 쪽 모듈에서는 불빛이 확인되지 않음 (모듈 인식 안됨)
### 1GbE 스위치 Cisco Catalyst 3750G-24TS-24 설정 확인
### 모듈은 26번 포트에 연결 하였습니다.
1GbE-switch>
1GbE-switch>
1GbE-switch>en
Password:
1GbE-switch#
1GbE-switch#show running-config
Building configuration...
-- 생략 --
interface GigabitEthernet1/0/25
switchport trunk encapsulation dot1q
switchport mode access
macro description cisco-switch
auto qos voip trust
spanning-tree link-type point-to-point
!
interface GigabitEthernet1/0/26
!
interface GigabitEthernet1/0/27
!
interface GigabitEthernet1/0/28
-- 생략 --
1GbE-switch#
1GbE-switch#show interfaces gigabitEthernet 1/0/26
GigabitEthernet1/0/26 is down, line protocol is down (err-disabled)
Hardware is Gigabit Ethernet, address is 081f.f3d3.ea9a (bia 081f.f3d3.ea9a)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseSX SFP
input flow-control is off, output flow-control is unsupported
1GbE-switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
1GbE-switch(config)#interface gigabitEthernet 1/0/26
1GbE-switch(config-if)#
1GbE-switch(config-if)#shutdown
1GbE-switch(config-if)#
1GbE-switch(config-if)#no shutdown
15w5d: %LINK-5-CHANGED: Interface GigabitEthernet1/0/26, changed state to administratively down
15w5d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
1GbE-switch(config-if)#exit
1GbE-switch(config)#do show int gi1/0/26
GigabitEthernet1/0/26 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 081f.f3d3.ea9a (bia 081f.f3d3.ea9a)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseSX SFP
input flow-control is off, output flow-control is unsupported
1GbE-switch(config)#
### 26번에서 27번 포트로 옮겨 보았습니다.
1GbE-switch(config)#
1GbE-switch(config)#
1GbE-switch(config)#do show int gi1/0/27
GigabitEthernet1/0/27 is down, line protocol is down (err-disabled)
Hardware is Gigabit Ethernet, address is 081f.f3d3.ea9b (bia 081f.f3d3.ea9b)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is Not Present
input flow-control is off, output flow-control is unsupported
1GbE-switch(config)#
1GbE-switch(config)#interface gigabitEthernet 1/0/27
1GbE-switch(config-if)#
1GbE-switch(config-if)#shutdown
1GbE-switch(config-if)#
1GbE-switch(config-if)#no shutdown
1GbE-switch(config-if)#
15w5d: %LINK-5-CHANGED: Interface GigabitEthernet1/0/27, changed state to administratively downexit
1GbE-switch(config-if)#exit
15w5d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/27, changed state to down
1GbE-switch(config)#
1GbE-switch(config)#do show int gi1/0/27
GigabitEthernet1/0/27 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 081f.f3d3.ea9b (bia 081f.f3d3.ea9b)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is Not Present
input flow-control is off, output flow-control is unsupported
### 포트 활성화 후 모듈은 인식 되었고, TX 포트에서 붉은 불빛이 확인 되었습니다.
### 하지만 링크에 표시등은 켜지지 않아 10GB 스위치 Nexus 3524 의 설정을 확인 하였습니다.
### 모듈은 Cisco Catalyst 3750G-24TS-24 와 동일하게 27번 포트에 연결 하였습니다.
10GbE-switch#
10GbE-switch# show interface brief
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Port
Interface Ch #
--------------------------------------------------------------------------------
-- 생략 --
Eth1/25 1 eth access down SFP not inserted 10G(D) --
Eth1/26 1 eth access down SFP not inserted 10G(D) --
Eth1/27 1 eth access down Link not connected 10G(D) --
Eth1/28 1 eth access down SFP not inserted 10G(D) --
Eth1/29 1 eth access down SFP not inserted 10G(D) --
Eth1/30 1 eth access down SFP not inserted 10G(D) --
Eth1/31 1 eth access down Link not connected 10G(D) --
-- 생략 --
10GbE-switch# configure t
Enter configuration commands, one per line. End with CNTL/Z.
10GbE-switch(config)# interface ethernet 1/27
10GbE-switch(config-if)#
10GbE-switch(config-if)# speed ?
10 10Mb/s
100 100Mb/s
1000 1Gb/s
10000 10Gb/s
40000 40Gb/s
auto Auto negotiate speed
10GbE-switch(config-if)#
10GbE-switch(config-if)# speed 1000
10GbE-switch(config-if)# exit
10GbE-switch(config)# exit
10GbE-switch# show interface brief
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Port
Interface Ch #
--------------------------------------------------------------------------------
-- 생략 --
Eth1/25 1 eth access down SFP not inserted 10G(D) --
Eth1/26 1 eth access down SFP not inserted 10G(D) --
Eth1/27 1 eth access up none 1000(D) --
Eth1/28 1 eth access down SFP not inserted 10G(D) --
Eth1/29 1 eth access down SFP not inserted 10G(D) --
Eth1/30 1 eth access down SFP not inserted 10G(D) --
Eth1/31 1 eth access down Link not connected 10G(D) --
-- 생략 --
10GbE-switch#
### 포트 속도를 10G 에서 1000M 로 변경 후 링크 확인 되었습니다.
### 링크 된 후 화면은 캡쳐하지 못했네요 ^^;;
### 현재 설정을 rom에 꼭 저장하시기 바랍니다.
<끝>
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