[4.0.1 Build 27] EVPN VXLAN: TSN dropping DHCP request from BMS
| Affects | Status | Importance | Assigned to | Milestone | ||
|---|---|---|---|---|---|---|
| Juniper Openstack | Status tracked in Trunk | |||||
| R4.0 |
Fix Committed
|
High
|
Hari Prasad Killi | |||
| Trunk |
Fix Committed
|
High
|
Hari Prasad Killi | |||
Bug Description
While trying EVPN VXLAN with Bare Metal solution, Setup only has TSN for DHCP and DNS . There is no TOR Agent in the cluster. The physical device is associated with TSN and TSN IP is getting programmed in TOR (QFX 5100) as EVPN Type3 Inclusive multicast route via control node.
Now when BMS is sending DHCP, the packet is coming till TSN and getting dropped in the vrouter. In dropstats Discard count is increasing.
TSN+ Controller (10.87.69.1) root/Embe1mpls
Compute (10.87.69.2) root/Embe1mpls
BMS: 10.87.69.3 root/Embe1mpls
DHCP request:
22:48:31.871395 IP 172.16.2.1.37796 > 172.16.
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 90:e2:ba:c4:2e:6c, length 300
22:48:36.013378 IP 172.16.2.1.37796 > 172.16.
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 90:e2:ba:c4:2e:6c, length 300
22:48:38.481463 IP 172.16.2.1.37796 > 172.16.
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 90:e2:ba:c4:2e:6c, length 300
22:48:41.193753 IP 172.16.2.1.37796 > 172.16.
IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 90:e2:ba:c4:2e:6c, length 300
4 packets captured
4 packets received by filter
0 packets dropped by kernel
Dropstats:
root@5b11s14:~# dropstats | grep -v " 0$”
Discards 1486
Cloned Original 1486
root@5b11s14:~# dropstats | grep -v " 0$"
Discards 1487
Cloned Original 1487
root@5b11s14:~# vxlan --get 4
VXLAN Table
VNID NextHop
----------------
4 12
root@5b11s14:~# nh --get 12
Id:12 Type:Vrf_Translate Fmly:AF_BRIDGE Rid:0 Ref_cnt:3 Vrf:1
Vrf:1
root@5b11s14:~# rt --dump 1 --family bridge
Flags: L=Label Valid, Df=DHCP flood, Mm=Mac Moved, L2c=L2 Evpn Control Word, N=New Entry
vRouter bridge table 0/1
Index DestMac Flags Label/VNID Nexthop Stats
21800 90:e2:ba:c4:2e:6c L 4 18 0
30316 80:71:1f:c3:e9:f0 LDf 4 15 0
97192 ff:ff:ff:ff:ff:ff LDf 4 22 1499
141232 90:e2:ba:a7:30:cd Df - 3 0
205376 0:0:5e:0:1:1 LDf 4 15 0
252916 0:0:5e:0:1:0 Df - 3 0
| summary: |
- EVPN VXLAN: TSN dropping DHCP request from BMS + [4.0.1 Build 27] EVPN VXLAN: TSN dropping DHCP request from BMS |
| Changed in juniperopenstack: | |
| milestone: | none → r4.0.1.0 |
| importance: | Undecided → High |
| assignee: | nobody → Hari Prasad Killi (haripk) |
| information type: | Proprietary → Public |
| OpenContrail Admin (ci-admin-f) wrote [Review update] R4.0 | #2 |
| OpenContrail Admin (ci-admin-f) wrote [Review update] master | #3 |
| OpenContrail Admin (ci-admin-f) wrote A change has been merged | #4 |
| OpenContrail Admin (ci-admin-f) wrote [Review update] master | #5 |
| OpenContrail Admin (ci-admin-f) wrote A change has been merged | #6 |
| Hari Prasad Killi (haripk) wrote | #7 |
Hi Divakar,
Loaded the vrouter module you have given. Still vrouter is not allocating IP to BMS DHCP request. As per the agent introspect DHCP error count is increasing now.
Setup
————
10.87.69.1 (Controller +TSN)
10.87.69.2 (Compute)
Thanks and Regards,
Chhandak
DhcpStats
dhcp_discover dhcp_request dhcp_inform dhcp_decline dhcp_other dhcp_errors offers_sent acks_sent nacks_sent relay_request relay_response more
0
0
0
0
0
173
0
0
0
0
0
true
root@5b11s14:~# vrouter --info | grep "vRouter module version"
vRouter module version 4.1.0.0 (Built by ddivakar@nodeb6 on 2017-08-14 11:34:56.340438)
DHCP request coming to TSN without any reply
-------
listening on p514p2, link-type EN10MB (Ethernet), capture size 65535 bytes
13:00:45.419992 9c:cc:83:e4:83:32 > 90:e2:ba:a7:30:cd, ethertype IPv4 (0x0800), length 392: 172.16.2.1.37796 > 172.16.
90:e2:ba:c4:2e:6c > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 90:e2:ba:c4:2e:6c, length 300
13:00:48.741257 9c:cc:83:e4:83:32 > 90:e2:ba:a7:30:cd, ethertype IPv4 (0x0800), length 392: 172.16.2.1.37796 > 172.16.
root@5b11s14:~# vxlan --dump
VXLAN Table
VNID NextHop
----------------
4 11
5 20
root@5b11s14:~# nh --get 11
Id:11 Type:Vrf_Translate Fmly:AF_BRIDGE Rid:0 Ref_cnt:3 Vrf:1
Vrf:1
root@5b11s14:~# rt --dump 1 --family bridge
Flags: L=Label Valid, Df=DHCP flood, Mm=Mac Moved, L2c=L2 Evpn Control Word, N=New Entry
vRouter bridge table 0/1
Index DestMac Flags Label/VNID Nexthop Stats
21800 90:e2:ba:c4:2e:6c L 4 23 0 >>> BMS MAC entry in agent
30316 80:71:1f:c3:e9:f0 LDf 4 15 0
83508 2:15:69:8e:17:78 LDf 4 14 0
97192 ff:ff:ff:ff:ff:ff LDf 4 25 163
141232 90:e2:ba:a7:30:cd Df - 3 0
158768 90:e2:ba:a7:30:cc LDf 5 13 0
205376 0:0:5e:0:1:1 LDf 4 15 0
252916 0:0:5e:0:1:0 Df - 3 0
root@5b11s14:~#