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Cisco Bug: CSCur06845 - NHRP control packets should be forwarded preferably on the same cloud

Last Modified

Oct 14, 2019

Products (109)

  • Cisco IOS
  • Cisco 888W Integrated Services Router
  • Cisco 812 CiFi Integrated Services Router
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco 892W Integrated Services Router
  • Cisco 898 Secure G.SHDSL EFM/ATM with Multi-Mode 4G LTE ISR Router
  • Cisco 2951 Integrated Services Router
  • Cisco 819 Hardened Integrated Services Router
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Known Affected Releases

15.3(3)S 15.4(3)S 15.5(1)S 15.5(2)S 15.5(2)T

Description (partial)

Symptom1:Spoke-spoke tunnel doesn't come up with CTS enabled

Symptom2:H routes are created on spoke1 with next hop as Hub instead of spoke2
1.On B2MCBR I see H routes for co-located ISP1/ISP3,pointing to wrong next hop which is Hub border router(HMCBR).
B2MCBR: [250/1] via, 00:01:14, Tunnel30
                       [250/1] via, 00:01:49, Tunnel20
                       [250/1] via, 00:01:19, Tunnel10
H [250/1] via, 00:02:44, Tunnel30
                       [250/1] via, 00:02:42, Tunnel10
2.After some time on B2MCBR , H route for Tunnel 30 is updated with correct nexthop [250/1] via, 00:01:37, Tunnel30
                       [250/1] via, 00:04:06, Tunnel20
                       [250/1] via, 00:01:40, Tunnel10
H [250/1] via, 00:09:08, Tunnel30
                       [250/1] via, 00:04:06, Tunnel10

Symptom1:CTS inline tagging enabled
Symptom2:Hub border is connected to two ISPs.
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