EIGRP 鄰居抖動

我在 GNS3 中設置了 EIGRP 拓撲。它看起來像這樣：

R7 和 R8 之間的鄰居關係不斷波動，我不知道為什麼。你好計時器和時間延遲都設置正確。我想這一定是我的配置。我還嗅探了wireshark中的網路流量，它被從R7發往R8的ICMP TTL Exceeded數據包淹沒。

我已經對其進行瞭如下測試：

• 僅打開 R1-R6 = EIGRP 路由正常工作
• 僅打開 R7-R9 = EIGRP 路由正常工作
• 打開所有路由器 = 鄰居抖動和網路充斥著 ICMP 數據包

這是我的配置：

#R1
int f1/0
ip addr 172.16.1.1 255.255.255.0
no shut

int lo0
ip addr 192.168.1.1 255.255.255.240
no shut

int lo1 
ip addr 192.168.1.17 255.255.255.240
no shut

int lo2
ip addr 192.168.1.33 255.255.255.224
no shut

int lo3
ip addr 192.168.1.65 255.255.255.224
no shut

int lo4
ip addr 192.168.1.97 255.255.255.224
no shut

int lo5
ip addr 192.168.1.129 255.255.255.192
no shut

int f1/1
ip addr 192.168.1.193 255.255.255.192
no shut

end
conf t
router eigrp 1
network 172.16.1.0 0.0.0.255
network 192.168.1.0 0.0.0.255


#R2
int f1/0
ip addr 172.16.1.2 255.255.255.0
no shut

int lo0
ip addr 192.168.2.1 255.255.255.248
no shut

int lo1
ip addr 192.168.2.9 255.255.255.248
no shut

int lo2
ip addr 192.168.2.17 255.255.255.240
no shut

int lo3
ip addr 192.168.2.33 255.255.255.224
no shut

int lo4
ip addr 192.168.2.65 255.255.255.224
no shut

int lo5
ip addr 192.168.2.97 255.255.255.224
no shut

int f1/1
ip addr 192.168.2.129 255.255.255.128
no shut


end
conf t
router eigrp 1
network 172.16.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255


#R3
int f1/0
ip addr 172.16.1.3 255.255.255.0
no shut

int lo0
ip addr 192.168.3.1 255.255.255.240
no shut

int lo1
ip addr 192.168.3.17 255.255.255.240
no shut

int lo2
ip addr 192.168.3.33 255.255.255.224
no shut

int lo3
ip addr 192.168.3.65 255.255.255.224
no shut

int lo4
ip addr 192.168.3.97 255.255.255.224
no shut

int lo5
ip addr 192.168.3.129 255.255.255.192
no shut

int f1/1
ip addr 192.168.3.193 255.255.255.192
no shut


end
conf t
router eigrp 1
network 172.16.1.0 0.0.0.255
network 192.168.3.0 0.0.0.255

#R4
int f1/0
ip addr 172.16.2.5 255.255.255.0
no shut

int lo0
ip addr 192.168.6.1 255.255.255.240
no shut

int lo1 
ip addr 192.168.6.17 255.255.255.240
no shut

int lo2
ip addr 192.168.6.33 255.255.255.224
no shut

int lo3
ip addr 192.168.6.65 255.255.255.224
no shut

int lo4
ip addr 192.168.6.97 255.255.255.224
no shut

int lo5
ip addr 192.168.6.129 255.255.255.192
no shut

int f1/1
ip addr 192.168.6.193 255.255.255.192
no shut


end
conf t
router eigrp 1
network 172.16.2.0 0.0.0.255
network 192.168.6.0 0.0.0.255


#R5
int f1/0
ip addr 172.16.2.6 255.255.255.0
no shut

int lo0
ip addr 192.168.7.1 255.255.255.248
no shut

int lo1
ip addr 192.168.7.9 255.255.255.248
no shut

int lo2
ip addr 192.168.7.17 255.255.255.240
no shut

int lo3
ip addr 192.168.7.33 255.255.255.224
no shut

int lo4
ip addr 192.168.7.65 255.255.255.224
no shut

int lo5
ip addr 192.168.7.97 255.255.255.224
no shut

int f1/1
ip addr 192.168.7.129 255.255.255.128
no shut

end
conf t
router eigrp 1
network 172.16.2.0 0.0.0.255
network 192.168.7.0 0.0.0.255


#R6
int f1/0
ip addr 172.16.2.7 255.255.255.0
no shut

int lo0
ip addr 192.168.8.1 255.255.255.240
no shut

int lo1
ip addr 192.168.8.17 255.255.255.240
no shut

int lo2
ip addr 192.168.8.33 255.255.255.224
no shut

int lo3
ip addr 192.168.8.65 255.255.255.224
no shut

int lo4
ip addr 192.168.8.97 255.255.255.224
no shut

int lo5
ip addr 192.168.8.129 255.255.255.192
no shut

int f1/1
ip addr 192.168.8.193 255.255.255.192
no shut

end
conf t
router eigrp 1
network 172.16.2.0 0.0.0.255
network 192.168.8.0 0.0.0.255



#R7
int s1/1
ip addr 10.9.0.2 255.255.255.252
no shut

int s1/0
ip addr 119.119.119.1 255.255.255.252
no shut

int f2/0
ip addr 172.16.1.9 255.255.255.0
no shut

int f2/1
ip addr 172.16.2.9 255.255.255.0
no shut

router eigrp 1
network 10.9.0.0 0.0.0.3
network 119.119.119.0 0.0.0.3
network 172.16.2.0 0.0.0.255
network 172.16.1.0 0.0.0.255
end



#R8
int s1/1
ip addr 10.11.0.2 255.255.255.252
no shut

int s1/0
ip addr 119.119.119.2 255.255.255.252
no shut

int f2/0
ip addr 172.16.2.11 255.255.255.0
no shut

int f2/1
ip addr 172.16.1.11 255.255.255.0
no shut

router eigrp 1
network 10.11.0.0 0.0.0.3
network 119.119.119.0 0.0.0.3
network 172.16.2.0 0.0.0.255
network 172.16.1.0 0.0.0.255
end


#R9

int s1/1
ip addr 10.9.0.1 255.255.255.252
no shut

int s1/0
ip addr 10.11.0.1 255.255.255.252
no shut

router eigrp 1
network 10.9.0.0 0.0.0.3
network 10.11.0.0 0.0.0.3
end

我相信這一定是配置錯誤，但我找不到。任何幫助將不勝感激。

經過數小時的測試……發現問題是一個損壞的IOS圖像。我用舊版本交換了圖像，我所有的原始配置都正常工作。哦！

您正在兩個網路部分中執行一個不連續的有類網路 172.16.0.0 / 16。在這種特殊情況下，自動匯總將通過匯總上面的網路並將其通告給另一端，從而使您的路由表不一致，反之亦然。

嘗試在所有路由器上的 eigrp 設置中不添加自動摘要，以便最終配置如下所示：

   router eigrp 1
    no auto-summary
    network x.x.x.x

引用自：https://serverfault.com/questions/471200