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Eigrp Neighbor not on common subnet for VlanXXX

dmoorefnlc
Level 1
Level 1

Ok, got my Eigrp static route redistributed. But now Eigrp on site 2 complaining that every vlan is not "common" on both sites.

Vlan192 links Site1 to Site2

Site1 EigrpConfig:

router eigrp 700

redistribute static metric 10000 1000 255 1 1500

network 10.20.0.0 0.0.255.255

network 192.168.0.0 0.0.3.255

no auto-summary

eigrp stub connected static

nterface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

Vl2 0 0/0 0 0/10 0 0

Vl20 0 0/0 0 0/10 0 0

Vl22 0 0/0 0 0/10 0 0

Vl26 0 0/0 0 0/10 0 0

Vl28 0 0/0 0 0/10 0 0

Vl30 0 0/0 0 0/10 0 0

Vl32 0 0/0 0 0/10 0 0

Vl34 0 0/0 0 0/10 0 0

Vl36 0 0/0 0 0/10 0 0

Vl38 0 0/0 0 0/10 0 0

Vl40 0 0/0 0 0/10 0 0

Vl255 0 0/0 0 0/10 0 0

Vl192 1 0/0 9 0/10 50 0

Site2 posted next

4 Replies 4

psprice
Level 1
Level 1

It means that the two EIGRP routers have seen each others hello packets on the VLAN but that they are in different subnets - both routers VLAN interfaces need to be in the same subnet.

HTH

Phil

how can I put do this? The common interface they share is in the same subnet, 192.168.0.0/22. Site1 is 192.168.0.2, Site2 is 192.168.3.6, bothe /22.

But the other interfaces naturally are different IP subnets. Site 1 is 10.20.0.0/16, site2 10.120.0.0/16.

Is there a way to only get hello's sent from the 192.168.0.0/22 interfaces, not from the other interfaces?

thanks

I used the passive-interface vlan command. on my site2 for all vlan's but 192.

That has stopped the warnings. Is this an acceptable "fix" to this?

dmoorefnlc
Level 1
Level 1

Here is site2

router eigrp 700

redistribute static metric 10000 1000 255 1 1500

network 10.120.0.0 0.0.255.255

network 10.223.2.204 0.0.0.0

network 192.168.0.0 0.0.3.255

no auto-summary

eigrp stub connected static

no eigrp log-neighbor-changes

no eigrp log-neighbor-warnings

Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

Vl2 0 0/0 0 0/10 0 0

Vl40 0 0/0 0 0/10 0 0

Vl42 0 0/0 0 0/10 0 0

Vl50 0 0/0 0 0/10 0 0

Vl120 0 0/0 0 0/10 0 0

Vl192 1 0/0 1303 0/10 6512 0

Enable of eigrp log-neighbor-warnings gives the following on site2:

(Default-IP-Routing-Table:700): Neighbor 10.120.2.3 not on common subnet for Vlan50

IP-EIGRP(Default-IP-Routing-Table:700): Neighbor 192.168.3.9 not on common subnet for Vlan2

(Default-IP-Routing-Table:700): Neighbor 10.120.2.3 not on common subnet for Vlan50

IP-EIGRP(Default-IP-Routing-Table:700): Neighbor 192.168.0.182 not on common subnet for Vlan2

IP-EIGRP(Default-IP-Routing-Table:700): Neighbor 10.120.50.3 not on common subnet for Vlan2

ColoVpn6509>(config-router)#

IP-EIGRP(Default-IP-Routing-Table:700): Neighbor 192.168.3.9 not on common subnet for Vlan2

seems router is at a war with itself. only 192.168.0.2 isn't native to this 6509.