I have 2 CRS317 Switches configured in MLAG with several VLANs and Bond interfaces, everything works except Jumbo Frames.
I've been trying to find the problem for several days, does anyone have an idea of what's wrong with the configuration.
As I mentioned, LACP works, VLANs work, I set 9000MTU and 10218 L2MTU on all interfaces and I can't ping anything above 1500 trough those switches no matter what combination I make on the switches.
I'm out of ideas and I need help, I honestly suspect a bug on the 7.14.2 version, but I'd like someone to confirm where I'm wrong if I'm wrong.
The configuration on both switches is exactly the same.
I tested with 2 RB3011 routers on which VLANs and Bonding are configured. When I connect those two routers directly to each other, I can ping up to 7000 packet size, and if I connect them through these CRS317 switches, the ping only goes up to packet size 1500.
This is my configuration:
Code: Select all
# 2024-04-16 11:38:41 by RouterOS 7.14.2
# software id = 090H-P7AG
#
# model = CRS317-1G-16S+
# serial number = xxxxxxxxxxxxxx
/interface bridge
add mtu=9000 name=MLAG-bridge vlan-filtering=yes
/interface ethernet
set [ find default-name=ether1 ] comment=OOB
set [ find default-name=sfp-sfpplus1 ] comment=Server1-Port2 l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus2 ] comment=router l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus3 ] comment=Server1-Port4 l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus4 ] disabled=yes l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus5 ] comment=Server2-Port2 l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus6 ] disabled=yes l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus7 ] comment=Server2-Port4 l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus8 ] disabled=yes l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus9 ] comment=Server3-Port2 l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus10 ] comment=NAS l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus11 ] comment=Server3-Port4 l2mtu=10218 \
mtu=9000
set [ find default-name=sfp-sfpplus12 ] comment=interlink l2mtu=10218 mtu=\
9000
set [ find default-name=sfp-sfpplus13 ] comment=Server4-Port2 l2mtu=10218 \
mtu=9000
set [ find default-name=sfp-sfpplus14 ] comment=Uplink l2mtu=10218 mtu=9000
set [ find default-name=sfp-sfpplus15 ] comment=Server4-Port4 l2mtu=10218 \
mtu=9000
set [ find default-name=sfp-sfpplus16 ] comment=interlink l2mtu=10218 mtu=\
9000
/interface bonding
add min-links=1 mlag-id=15 mode=802.3ad name=Uplink-bond slaves=sfp-sfpplus14 \
transmit-hash-policy=layer-2-and-3
add min-links=1 mode=802.3ad mtu=9000 name=interlink-bond slaves=\
sfp-sfpplus12,sfp-sfpplus16 transmit-hash-policy=layer-2-and-3
add min-links=1 mlag-id=16 mode=802.3ad mtu=9000 name=nas-bond slaves=\
sfp-sfpplus10 transmit-hash-policy=layer-3-and-4
add min-links=1 mlag-id=14 mode=802.3ad name=router-bond slaves=sfp-sfpplus2 \
transmit-hash-policy=layer-2-and-3
add min-links=1 mlag-id=10 mode=802.3ad mtu=9000 name=srv1-bond slaves=\
sfp-sfpplus1,sfp-sfpplus3 transmit-hash-policy=layer-3-and-4
add min-links=1 mlag-id=11 mode=802.3ad mtu=9000 name=srv2-bond slaves=\
sfp-sfpplus5,sfp-sfpplus7 transmit-hash-policy=layer-3-and-4
add min-links=1 mlag-id=12 mode=802.3ad mtu=9000 name=srv3-bond slaves=\
sfp-sfpplus9,sfp-sfpplus11 transmit-hash-policy=layer-3-and-4
add min-links=1 mlag-id=13 mode=802.3ad mtu=9000 name=srv4-bond slaves=\
sfp-sfpplus13,sfp-sfpplus15 transmit-hash-policy=layer-3-and-4
/interface ethernet switch
set 0 l3-hw-offloading=yes
/interface bridge mlag
set bridge=MLAG-bridge peer-port=interlink-bond
/interface bridge port
add bridge=MLAG-bridge interface=Uplink-bond pvid=1999
add bridge=MLAG-bridge interface=nas-bond pvid=100
add bridge=MLAG-bridge interface=interlink-bond pvid=98
add bridge=MLAG-bridge interface=router-bond
add bridge=MLAG-bridge interface=srv1-bond
add bridge=MLAG-bridge interface=srv2-bond
add bridge=MLAG-bridge interface=srv3-bond
add bridge=MLAG-bridge interface=srv4-bond
/interface bridge vlan
add bridge=MLAG-bridge untagged=interlink-bond vlan-ids=98
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
untagged=nas-bond vlan-ids=100
add bridge=MLAG-bridge tagged=\
interlink-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond vlan-ids=101
add bridge=MLAG-bridge tagged=\
interlink-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond vlan-ids=102
add bridge=MLAG-bridge tagged=\
interlink-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond vlan-ids=103
add bridge=MLAG-bridge tagged=\
interlink-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond vlan-ids=104
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=200
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=202
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=204
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=205
add bridge=MLAG-bridge comment=DARK tagged="interlink-bond,router-bond,Uplink-\
bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond" vlan-ids=1473
add bridge=MLAG-bridge comment=OOB tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=1998
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
untagged=Uplink-bond vlan-ids=1999
add bridge=MLAG-bridge tagged=\
interlink-bond,router-bond,srv1-bond,srv2-bond,srv3-bond,srv4-bond \
vlan-ids=2000
/ip dhcp-client
add interface=ether1