IOSXE 17.3.3 사용중으로 vlan 2개의 인터페이스 Mac 주소가 동일합니다. IOS bug일까요?
#sh mac address-table
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
All 0100.0ccc.cccc STATIC CPU
All 0100.0ccc.cccd STATIC CPU
All 0180.c200.0000 STATIC CPU
All 0180.c200.0001 STATIC CPU
All 0180.c200.0002 STATIC CPU
All 0180.c200.0003 STATIC CPU
All 0180.c200.0004 STATIC CPU
All 0180.c200.0005 STATIC CPU
All 0180.c200.0006 STATIC CPU
All 0180.c200.0007 STATIC CPU
All 0180.c200.0008 STATIC CPU
All 0180.c200.0009 STATIC CPU
All 0180.c200.000a STATIC CPU
All 0180.c200.000b STATIC CPU
All 0180.c200.000c STATIC CPU
All 0180.c200.000d STATIC CPU
All 0180.c200.000e STATIC CPU
All 0180.c200.000f STATIC CPU
All 0180.c200.0010 STATIC CPU
All 0180.c200.0021 STATIC CPU
All ffff.ffff.ffff STATIC CPU
990 0090.0b4d.b914 DYNAMIC Twe1/0/23
990 0090.0b4d.b91c DYNAMIC Twe1/0/23
990 6805.caaa.4dd1 DYNAMIC Twe1/0/11
990 9077.ee8c.12c7 DYNAMIC Twe1/0/23
990 ac7a.564d.881f STATIC Vl990
990 c014.fe63.4e19 DYNAMIC Twe1/0/23
990 c014.fe63.4e73 DYNAMIC Twe1/0/23
999 001f.1457.059e DYNAMIC Twe1/0/23
999 0050.56bc.09a5 DYNAMIC Twe1/0/23
999 ac7a.564d.881f STATIC Vl999
999 c014.fe63.4e19 DYNAMIC Twe1/0/23
999 c014.fe63.4e43 DYNAMIC Twe1/0/23
Total Mac Addresses for this criterion: 33
#sh int vlan 990
Vlan990 is up, line protocol is up , Autostate Enabled
Hardware is Ethernet SVI, address is ac7a.564d.881f (bia ac7a.564d.881f)
Description:
Internet address is
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 255/255, rxload 42/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:17:09
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 165820000 bits/sec, 54192 packets/sec
5 minute output rate 2090346000 bits/sec, 229225 packets/sec
60060458 packets input, 27037471325 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
234355420 packets output, 263872159020 bytes, 0 underruns
Output 0 broadcasts (0 IP multicasts)
0 output errors, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
#sh int vlan 999
Vlan999 is up, line protocol is up , Autostate Enabled
Hardware is Ethernet SVI, address is ac7a.564d.881f (bia ac7a.564d.881f)
Description:
Internet address is
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 7/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:17:14
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 30620000 bits/sec, 3138 packets/sec
5 minute output rate 8687000 bits/sec, 4037 packets/sec
3569389 packets input, 4405691293 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
4682642 packets output, 1272057896 bytes, 0 underruns
Output 0 broadcasts (0 IP multicasts)
0 output errors, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
