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mms101
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Posts: 14
Joined: Fri Apr 07, 2017 5:45 pm

v7 traffic forwarding problem

Thu May 18, 2023 12:06 pm

Hello!

Mikrotik gets IP prefix via bgp (ibgp).
But it is not possible to ping a host in this preffix.
When I add option "interface=" to ping, all is ok.
It was not problems with the first release of v7, but now it's broken (((
Does anybody have such problem?

[admin@MIKR1] /routing/bgp/session> /system/routerboard/print
routerboard: yes
board-name: hEX PoE
model: RB960PGS
revision: r2
firmware-type: qca9550L
factory-firmware: 6.44.6
current-firmware: 7.9
upgrade-firmware: 7.9

[admin@MIKR1] /routing/bgp/session> /routing/route/print detail where dst-address=192.168.100.100/32
Flags: X - disabled, F - filtered, U - unreachable, A - active;
c - connect, s - static, r - rip, b - bgp, o - ospf, d - dhcp, v - vpn, m - modem, a - ldp-address, l - ldp-mapping, g - slaac, y - bgp-mpls-vpn;
H - hw-offloaded; + - ecmp, B - blackhole
Ab afi=ip4 contribution=active dst-address=192.168.100.100/32 routing-table=main gateway=10.100.0.0
immediate-gw=10.100.0.0%l2tp-mikr2-intf1 distance=200 scope=40 target-scope=30
belongs-to="bgp-IP-10.100.0.0"
bgp.peer-cache-id=*2C00002 .local-pref=100 .atomic-aggregate=no .origin=igp
debug.fwp-ptr=0x203024E0

[admin@MIKR1] /routing/bgp/session> /ip/route/print detail where dst-address=192.168.100.100/32
Flags: D - dynamic; X - disabled, I - inactive, A - active;
c - connect, s - static, r - rip, b - bgp, o - ospf, d - dhcp, v - vpn, m - modem, y - bgp-mpls-vpn;
H - hw-offloaded; + - ecmp
DAb dst-address=192.168.100.100/32 routing-table=main gateway=10.100.0.0
immediate-gw=10.100.0.0%l2tp-mikr2-intf1 distance=200 scope=40 target-scope=30
suppress-hw-offload=no

[admin@MIKR1] /routing/bgp/session> /ping 192.168.100.100
SEQ HOST SIZE TTL TIME STATUS
0 22 (Invalid argument)
1 22 (Invalid argument)
2 22 (Invalid argument)
sent=3 received=0 packet-loss=100%

[admin@MIKR1] /routing/bgp/session> /ping 192.168.100.100 interface=l2tp-mikr2-intf1
SEQ HOST SIZE TTL TIME STATUS
0 192.168.100.100 56 115 207ms637us
1 192.168.100.100 56 115 208ms257us
sent=2 received=2 packet-loss=0% min-rtt=207ms637us avg-rtt=207ms947us max-rtt=208ms257us

[admin@MIKR1]

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