Bridge loop issue on CCR
Posted: Fri Apr 08, 2016 9:57 am
Hello,
I have a simple network architecture with a CCR-1036-12G and 1 uplink (BGP) and bridge of remaining ports connected to separate TOR switches (one Cisco 2960 in each rack). Each TOR switch is further connected to an unmanaged TP link switch used for IPMI access.
Network diagram Image
- http://imgur.com/4VKyfgS
Bridge is configured -
ether11 is WAN and ether1-10 is configured as a bridge.
Problem 1 -
All connected ports of the bridge receive all the traffic received by the WAN port.
Interfaces image -
Problem 2 -
Every few minutes, all switch ports receive traffic (seems related to to problem 1). It causes packet loss within the LAN during this time.
Normal switch -
During issue -
Any ideas what is the issue ?
CCR versions
RouterOS - 6.34.2 .
Firmware - 3.27
We have tried disabling / enabling RSTP on the bridge and rebooting the router.
Thank you for your time.
I have a simple network architecture with a CCR-1036-12G and 1 uplink (BGP) and bridge of remaining ports connected to separate TOR switches (one Cisco 2960 in each rack). Each TOR switch is further connected to an unmanaged TP link switch used for IPMI access.
Network diagram Image
- http://imgur.com/4VKyfgSBridge is configured -
Code: Select all
0 R name="bridge1" mtu=1500 actual-mtu=1500 l2mtu=1590 arp=enabled
mac-address=D4:CA:6D:E1:5F:6D protocol-mode=rstp priority=0x8000
auto-mac=yes admin-mac=00:00:00:00:00:00 max-message-age=20s
forward-delay=15s transmit-hold-count=6 ageing-time=5m
Problem 1 -
All connected ports of the bridge receive all the traffic received by the WAN port.
Interfaces image -
Problem 2 -
Every few minutes, all switch ports receive traffic (seems related to to problem 1). It causes packet loss within the LAN during this time.
Normal switch -
During issue -
Any ideas what is the issue ?
CCR versions
RouterOS - 6.34.2 .
Firmware - 3.27
We have tried disabling / enabling RSTP on the bridge and rebooting the router.
Thank you for your time.