Here is my current design:
Cisco 3560 >> MikroTik RB2011UiAS >> Cisco 6509 (sup720)
My problem is with Spanning tree. I have 3 vlans configured on the 3560 and the MikroTik.
Vlan 1,6,102
RSTP is enabled on the bridge.
Vlan 6 and Vlan 102 work perfectly. My issue is with management access on Vlan 1.
SO the problem is why does the Cisco 6509 think there is a loop?
I see the following on the 6509 when running show cdp neigh:
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Sarasota-6509-1#show cdp neigh | inc 2/1/20
Gig 2/1/20 107 R MikroTik VLAN1
Gig 2/1/20 107 R MikroTik VLAN6
Gig 2/1/20 107 R MikroTik br-trunk
Gig 2/1/20 107 R MikroTik VLAN102
Gig 2/1/20 133 S I WS-C3560- Gig 0/1
Spanning Tree for Vlan 1:
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Sarasota-6509-1#show spanning-tree vlan 1 interface gi 2/1/20
Vlan Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
VLAN0001 Desg BLK 4 128.4116 P2p Dispute
Sarasota-6509-1#show spanning-tree vlan 1 interface gi 2/1/20 detail
Port 4116 (GigabitEthernet2/1/20) of VLAN0001 is designated blocking (dispute)
Port path cost 4, Port priority 128, Port Identifier 128.4116.
Designated root has priority 8192, address 0022.564b.c801
Designated bridge has priority 32769, address e840.409a.3280
Designated port id is 128.4116, designated path cost 5
Timers: message age 0, forward delay 13, hold 0
Number of transitions to forwarding state: 0
Link type is point-to-point by default
BPDU: sent 2626, received 7915
Sarasota-6509-1#
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[MTUSA2011] > export
# mar/18/2014 16:43:57 by RouterOS 6.7
# software id = YX2B-P6TV
#
/interface bridge
add l2mtu=1594 name=VLAN6
add l2mtu=1594 name=VLAN102
add l2mtu=1598 name=br-trunk
/interface ethernet
set [ find default-name=ether1 ] bandwidth=5M/5M comment="Trunk for Barfield Wireless connection" speed=1Gbps
set [ find default-name=ether2 ] bandwidth=4M/4M comment=\
"Contracting - Vlan 102 - Internet - BW= 3 Mbps"
set [ find default-name=ether3 ] bandwidth=4M/4M comment="Lawn Service - Vlan 102 - Internet - BW= 3 Mbps"
set [ find default-name=ether4 ] bandwidth=3200/3200
set [ find default-name=ether5 ] disabled=yes
set [ find default-name=ether6 ] disabled=yes
set [ find default-name=ether7 ] disabled=yes
set [ find default-name=ether8 ] disabled=yes
set [ find default-name=ether9 ] disabled=yes
/interface wireless
set [ find default-name=wlan1 ] l2mtu=2290 ssid=MikroTik
/ip neighbor discovery
set ether1 comment="Trunk for Barfield Wireless connection - BW= 5 Mbps"
set ether2 comment="Contracting - Vlan 102 - Internet - BW= 3 Mbps"
set ether3 comment="Lawn Service - Vlan 102 - Internet - BW= 3 Mbps"
/interface vlan
add interface=br-trunk l2mtu=1594 name="VLAN 1" vlan-id=1
add interface=br-trunk l2mtu=1594 name="VLAN 6" vlan-id=6
add interface=br-trunk l2mtu=1594 name="VLAN 102" vlan-id=102
/interface ethernet switch port
set 6 vlan-mode=fallback
set 7 vlan-mode=fallback
set 8 vlan-mode=fallback
set 9 vlan-mode=fallback
set 10 vlan-mode=fallback
set 12 vlan-mode=fallback
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot user profile
set [ find default=yes ] idle-timeout=none keepalive-timeout=2m mac-cookie-timeout=3d
/port
set 0 name=serial0
/snmp community
set [ find default=yes ] authentication-password=**** encryption-password=**** security=authorized
add addresses=0.0.0.0/0 name=**** write-access=yes
/interface bridge port
add bridge=VLAN102 interface="VLAN 102"
add bridge=VLAN102 edge=yes interface=ether2
add bridge=VLAN102 interface=ether3
add bridge=VLAN6 interface=ether4
add bridge=br-trunk edge=no interface=sfp1
add bridge=br-trunk edge=no interface=ether1
add bridge=VLAN6 interface="VLAN 6"
/ip address
add address=10.19.0.53/32 interface="VLAN 6" network=10.19.0.1
/ip route
add check-gateway=ping distance=1 gateway=10.19.0.1
/ip upnp
set allow-disable-external-interface=no
/lcd
set default-screen=informative-slideshow
/lcd interface
set sfp1 interface=sfp1
set ether1 interface=ether1
set ether2 interface=ether2
set ether3 interface=ether3
set ether4 interface=ether4
set ether5 interface=ether5
set ether6 interface=ether6
set ether7 interface=ether7
set ether8 interface=ether8
set ether9 interface=ether9
set ether10 interface=ether10
set wlan1 interface=wlan1
/snmp
set contact="ME" enabled=yes location=Contracting trap-community=**** \
trap-version=2
/system clock
set time-zone-name=America/New_York
/system identity
set name=Contracting-MTUSA2011
/system ntp client
set enabled=yes mode=unicast primary-ntp=10.19.0.1 secondary-ntp=172.30.3.250
[MTUSA2011] >
