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Re: EVPN: No /32 route for existing MAC adress

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Thank you very much for your reply. I have still not resolved the issue.

I have only 4 devices (2x MX960 and 2x EX9200) My PE and CE routers configured on each and the same device. 

 

I have an interface with 2 subnets. At the moment these gateways are only configured on 1 of my 4 devices (EX9200)

username@CORE01> show configuration interfaces irb.833
family inet {
filter {
output acl-out-v4;
}
address x.x.x.x/28;
address x.x.x.x/28;
}
mac 00:00:00:00:00:01;

 

 

This is working fine. All MAC adresses are found and ARP table is populated.

username@CORE01> show ethernet-switching table vlan-id 833
Routing instance : HOSTING-EVPN
Vlan MAC MAC Age Logical NH RTR
name address flags interface Index ID
VL833-TestVlan 00:0c:29:02:60:7d D,SE - ae6.833
VL833-TestVlan 00:0c:29:02:ac:a0 D,SE - ae6.833
VL833-TestVlan 00:0c:29:10:2c:b5 D,SE - ae6.833
VL833-TestVlan 00:0c:29:3f:31:05 DC,SE - pip-14.ffff0f000000 1048575 1048575
VL833-TestVlan 00:0c:29:59:32:26 D,SE - ae6.833
VL833-TestVlan 00:0c:29:6c:34:41 D,SE - ae6.833
VL833-TestVlan 00:0c:29:c1:e5:42 D,SE - ae6.833
VL833-TestVlan 00:0c:29:ca:02:53 D,SE - ae6.833
VL833-TestVlan 00:0c:29:cf:02:54 D,SE - ae6.833
VL833-TestVlan 00:0c:29:df:c6:f1 D,SE - ae6.833
VL833-TestVlan 00:0c:29:fe:06:a4 D,SE - ae6.833
VL833-TestVlan 00:25:90:0d:69:ea D,SE - ae6.833
VL833-TestVlan 00:25:90:0d:80:19 D,SE - ae6.833
VL833-TestVlan 00:50:56:80:05:b8 D,SE - ae6.833
VL833-TestVlan 00:50:56:80:39:41 D,SE - ae6.833
VL833-TestVlan 00:50:56:80:64:1f D,SE - ae6.833
VL833-TestVlan 00:50:56:80:a0:3e D,SE - ae6.833
VL833-TestVlan 28:d2:44:15:0d:1e DC,SE - pip-14.ffff0f000000 1048592 1048592
VL833-TestVlan 5c:8a:38:3a:48:82 D,SE - ae6.833

 

username@CORE01> show arp
MAC Address Address Name Interface Flags
00:0c:29:df:c6:f1 x.x.x.82 x.x.x.82 irb.833 [ae6.833] none
00:0c:29:df:c6:f1 x.x.x.83 x.x.x.83 irb.833 [ae6.833] none
00:0c:29:fe:06:a4 x.x.x.84 x.x.x.84 irb.833 [ae6.833] none
00:0c:29:59:32:26 x.x.x.85 x.x.x.85 irb.833 [ae6.833] none
00:50:56:80:64:1f x.x.x.86 x.x.x.86 irb.833 [ae6.833] none
00:0c:29:c1:e5:42 x.x.x.89 x.x.x.89 irb.833 [ae6.833] none
00:0c:29:c1:e5:42 x.x.x.90 x.x.x.90 irb.833 [ae6.833] none
00:0c:29:cf:02:54 x.x.x.91 x.x.x.91 irb.833 [ae6.833] none
00:25:90:0d:69:ea x.x.x.92 x.x.x.92 irb.833 [ae6.833] none
00:0c:29:ca:02:53 x.x.x.93 x.x.x.93 irb.833 [ae6.833] none
00:25:90:0d:80:19 x.x.x.94 x.x.x.94 irb.833 [ae6.833] none
00:0c:29:02:ac:a0 x.x.x.98 x.x.x.98 irb.833 [ae6.833] none
00:0c:29:02:60:7d x.x.x.100 x.x.x.100 irb.833 [ae6.833] none
00:0c:29:6c:34:41 x.x.x.101 x.x.x.101 irb.833 [ae6.833] none
00:0c:29:10:2c:b5 x.x.x.102 x.x.x.102 irb.833 [ae6.833] none
00:50:56:80:05:b8 x.x.x.103 x.x.x.103 irb.833 [ae6.833] none
00:50:56:80:a0:3e x.x.x.105 x.x.x.105 irb.833 [ae6.833] none
00:50:56:80:39:41 x.x.x.106 x.x.x.106 irb.833 [ae6.833] none

 

However, not all of these entries are learned by EVPN:

username@CORE01> show route table HOSTING-VRF
HOSTING-VRF.inet.0: 23 destinations, 24 routes (23 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
x.x.x.80/28 *[Direct/0] 6d 22:16:54
> via irb.833
x.x.x.81/32 *[Local/0] 1w0d 20:05:52
Local via irb.833
x.x.x.83/32 *[EVPN/7] 6d 17:01:54
> via irb.833
x.x.x.84/32 *[EVPN/7] 03:32:24
> via irb.833
x.x.x.85/32 *[EVPN/7] 6d 17:01:56
> via irb.833
x.x.x.86/32 *[EVPN/7] 00:08:43
> via irb.833
x.x.x.90/32 *[EVPN/7] 6d 17:00:52
> via irb.833
x.x.x.91/32 *[EVPN/7] 16:50:47
> via irb.833
x.x.x.93/32 *[EVPN/7] 00:31:26
> via irb.833
x.x.x.94/32 *[EVPN/7] 6d 17:05:47
> via irb.833
x.x.x.96/28 *[Direct/0] 6d 22:16:54
> via irb.833
x.x.x.97/32 *[Local/0] 1w0d 20:05:52
Local via irb.833
x.x.x.98/32 *[EVPN/7] 00:02:37
> via irb.833
x.x.x.100/32 *[EVPN/7] 1d 19:27:26
> via irb.833
x.x.x.101/32 *[EVPN/7] 00:07:14
> via irb.833
x.x.x.102/32 *[EVPN/7] 1d 18:40:14
> via irb.833
x.x.x.103/32 *[EVPN/7] 05:41:10
> via irb.833
x.x.x.105/32 *[EVPN/7] 00:07:38
> via irb.833
x.x.x.106/32 *[EVPN/7] 1d 20:04:38
> via irb.833

 

 

At least 2 (.82 and .89) of the missing hosts are very active webservers that are generating traffic constantly. It works at the moment because the /24 subnet route is followed. But traffic to these hosts should be routed via the /32 EVPN route as designed. This is not the case and will cause problems when i add the gateway addresses on my other routers.

 

Pinging the servers from the router works but still does not create an EVPN route.

 

 

 

 

 


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