OSPF across VLANS not making sense

j2sw · September 23, 2012, 7:13pm

All,
I currently have the following setup for a new pop we are doing
2011 tower.jpg
My problem is I can not get OSPF to establish across the VLAN. If I move the IP and OSPF to one of the physical ports I can get it to establish, but not totally. The routes do not get exchanged. I can reproduce this on other locations.

The 2011 at the top is just a managed VLAN switch. Here is a compact export

/interface bridge
add l2mtu=1594 name=VLAN60BR
add l2mtu=1594 name=VLAN62BR
add l2mtu=1594 name=VLAN61BR

/interface vlan
add interface=sfp1 l2mtu=1594 name=VLAN61 vlan-id=61
add interface=sfp1 l2mtu=1594 name=VLAN60 vlan-id=60
add interface=sfp1 l2mtu=1594 name=VLAN62 vlan-id=62

/interface bridge port
add bridge=VLAN60BR interface=ether4
add bridge=VLAN61BR interface=ether7
add bridge=VLAN62BR interface=ether1
add bridge=VLAN62BR interface=ether2
add bridge=VLAN62BR interface=ether3
add bridge=VLAN62BR interface=VLAN62
add bridge=VLAN61BR interface=VLAN61
add bridge=VLAN60BR interface=VLAN60
/ip address
add address=10.249.2.101/29 interface=VLAN60BR
add address=10.249.2.237/29 interface=VLAN61BR

Here is the 2011 Router at the bottom

/interface vlan
add interface=sfp1 l2mtu=1594 name=VLAN62 vlan-id=62
add interface=sfp1 l2mtu=1594 name=VLAN60 vlan-id=60
add interface=sfp1 l2mtu=1594 name=VLAN61 vlan-id=61

set [ find default=yes ] redistribute-connected=as-type-1 redistribute-static=\
    as-type-1
/ip address
add address=10.5.152.1/28 interface=VLAN62
add address=10.249.2.233/29  interface=VLAN61

/routing ospf interface
add interface=VLAN60 network-type=point-to-point
add interface=VLAN61 network-type=point-to-point
/routing ospf network
add area=backbone

Here is the 450 at the other side

/interface vlan
add interface=ether1 l2mtu=1516 name=VLAN61 vlan-id=61
/routing ospf instance
set [ find default=yes ] redistribute-connected=as-type-1 redistribute-static=\
    as-type-1
/ip address
add address=10.249.2.236/29 comment=KAY-WINGATE interface=VLAN61

/routing ospf interface
add interface=VLAN61 network-type=point-to-point
/routing ospf network
add area=backbone network=10.249.2.232/29

What am I doing wrong?

gregsowell · September 24, 2012, 10:34pm

Justin,

Even with setting your OSPF interface type to P2P, it will still use Multicast…the only advantage is that it stops doing the DR/BDR election.

I would try setting my interface types to NMBA(nonbroadcast multi access) and configuring some OSPF neighbors. This will kill multicast and switch all communication to unicast.

Let me know what that does killer.

j2sw · October 2, 2012, 11:40pm

BTW: I fixed this. I had the physical port bridged with the VLANs. Once I removed this all was good

Maggiore81 · September 19, 2017, 3:33pm

Sorry to resurrect an old post.

CCR1009 with a DAC cable into a CRS326 switch.
5 vlan on the SFP port.
I am not able to start OSPF on vlan interface.
I can ping the remote end, I see it in ip neighbours but OSPF doesnt start.
what I am missing?

ZeroByte · September 19, 2017, 4:22pm

Make sure all of the parameters match on both ends:
network type (broadcast / ptp / etc)
IP network / mask
OSPF settings such as hello, hold down, timers, etc.
IP MTU on the interfaces
Make sure neither router has their interface into the network set to passive=yes

JimmyNyholm · September 19, 2017, 5:11pm

And enable ospf logging if all else fails.

Maggiore81 · September 19, 2017, 6:38pm

I have checked it 10 times.
Network type ptp
I can ping the remote ip
I am replacing a CCR with another CCR in a tower to seperate backbone with access layer.
all conf build from scratch by hand.

I have interface UP, instance running but no packets on VLAN interface where the OSPF is in.
From the logging I see OSPF hello sent on the VLAN interface.

I have the SFP+ in trunk mode with a CRS326 switch…

Maggiore81 · September 19, 2017, 9:22pm

I am almost sure 100% that the problem is not in the CCR but in the CRS
here is my config.

The CCR is connected via SFP+1 to the SFP+2 of the CRS with a DAC Cable.
On the switch I have:
port 7 untagged vlan 201 (going to a remote router via a licensed microwave link)
sfp+2 trunk port.

MMM MMM KKK TTTTTTTTTTT KKK
MMMM MMMM KKK TTTTTTTTTTT KKK
MMM MMMM MMM III KKK KKK RRRRRR OOOOOO TTT III KKK KKK
MMM MM MMM III KKKKK RRR RRR OOO OOO TTT III KKKKK
MMM MMM III KKK KKK RRRRRR OOO OOO TTT III KKK KKK
MMM MMM III KKK KKK RRR RRR OOOOOO TTT III KKK KKK

[?] Gives the list of available commands
command [?] Gives help on the command and list of arguments

[Tab] Completes the command/word. If the input is ambiguous,
a second [Tab] gives possible options

/ Move up to base level
.. Move up one level
/command Use command at the base level
[admin@MT Switch Trasporto] > export compact

jan/02/1970 08:08:17 by RouterOS 6.38.7

software id = 4RYP-0KFN

/interface bridge
add name=Bridge_Mgmt
/interface ethernet
set [ find default-name=ether1 ] comment="POE IN"
set [ find default-name=ether23 ] comment="APC PDU #01"
set [ find default-name=ether24 ] comment="Verso CCR Trasporto P5"
set [ find default-name=sfp-sfpplus2 ] comment=TRUNK
set [ find default-name=ether2 ] comment=T4 master-port=sfp-sfpplus2
set [ find default-name=ether3 ] comment=T6A master-port=sfp-sfpplus2
set [ find default-name=ether4 ] comment=T6C master-port=sfp-sfpplus2
set [ find default-name=ether5 ] comment=T13 master-port=sfp-sfpplus2
set [ find default-name=ether6 ] comment=T21 master-port=sfp-sfpplus2
set [ find default-name=ether7 ] comment=RA master-port=sfp-sfpplus2
/interface ethernet switch port
set 1 default-vlan-id=204 vlan-header=always-strip
set 2 default-vlan-id=262 vlan-header=always-strip
set 3 default-vlan-id=263 vlan-header=always-strip
set 4 default-vlan-id=213 vlan-header=always-strip
set 5 default-vlan-id=221 vlan-header=always-strip
set 6 default-vlan-id=201 vlan-header=always-strip vlan-mode=secure
set 25 vlan-header=add-if-missing vlan-mode=secure
/interface bridge port
add bridge=Bridge_Mgmt interface=ether24
add bridge=Bridge_Mgmt interface=ether23
add bridge=Bridge_Mgmt interface=ether22
add bridge=Bridge_Mgmt interface=ether21
/interface ethernet switch vlan
add ports=ether7,sfp-sfpplus2 switch=switch1 vlan-id=201
add ports=ether2,sfp-sfpplus2 switch=switch1 vlan-id=204
add ports=ether5,sfp-sfpplus2 switch=switch1 vlan-id=213
add ports=ether6,sfp-sfpplus2 switch=switch1 vlan-id=221
add ports=ether4,sfp-sfpplus2 switch=switch1 vlan-id=263
add ports=ether3,sfp-sfpplus2 switch=switch1 vlan-id=261
/ip address
add address=100.60.66.254/24 interface=Bridge_Mgmt network=100.60.66.0
/ip route
add distance=1 gateway=100.60.66.55
/ip service
set telnet disabled=yes
set ftp disabled=yes
set api disabled=yes
set api-ssl disabled=yes
/system clock
set time-zone-name=Europe/Rome
/system identity
set name="MT Switch Trasporto"
/system ntp client
set enabled=yes primary-ntp=193.204.114.105 secondary-ntp=185.19.184.35
/system routerboard settings
set boot-os=router-os
[admin@MT Switch Trasporto] >

Maggiore81 · September 20, 2017, 6:33am

Upgraded from 6.38.7 to 6.40.3 on the switch and now it appears to work

with 6.38.7 latest bugfix it did not work.

Routers remain with 6.38.7 bugfix.