Do you have any HIMI connections between the router, and a switchblade? Ken Matlock Network Analyst Exempla Healthcare (303) 467-4671 matlo...@exempla.org
-----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Jay Nakamura Sent: Thursday, August 12, 2010 11:35 AM To: cisco-nsp Subject: Re: [c-nsp] Mysterious tunnel interfaces Mystery deepens. Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#int tun0 % This interface cannot be modified Router(config)#no int tun0 % This interface cannot be modified Router(config)#int tun2 % This interface cannot be modified Router(config)#int tun3 % This interface cannot be modified Router(config)#^Z Router#sh ip pim tunnel Router# Nothing in "show run all" for these interfaces. I don't have multicast configured, or at least I haven't actively configured anything for it. I haven't really had to do anything with Multicast so I am not familiar with it. I do have IOS content filtering installed/configured but I don't think that will do this. I do have ZBFW configured. I do not have VRF on this router. Here are some outputs of the interfaces Router#sh int tunn0 Tunnel0 is up, line protocol is up Hardware is Tunnel Interface is unnumbered. Using address of Tunnel2 (172.16.0.1) MTU 17912 bytes, BW 100 Kbit/sec, DLY 50000 usec, reliability 255/255, txload 81/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive not set Tunnel source 172.19.128.31 Tunnel protocol/transport multi-GRE/IP Key disabled, sequencing disabled Checksumming of packets disabled Tunnel TTL 255, Fast tunneling enabled Tunnel transport MTU 1472 bytes Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 17:22:42, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 32000 bits/sec, 2 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 95997 packets output, 26708838 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out Router#sh int tunn2 Tunnel2 is up, line protocol is up Hardware is Tunnel Internet address is 172.16.0.1/16 MTU 17916 bytes, BW 100 Kbit/sec, DLY 50000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive not set Tunnel source 172.16.0.1 Tunnel protocol/transport multi-GRE/IP Key disabled, sequencing disabled Checksumming of packets disabled Tunnel TTL 255, Fast tunneling enabled Tunnel transport MTU 1476 bytes Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output never, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out Router#sh int tunn3 Tunnel3 is up, line protocol is up Hardware is Tunnel Interface is unnumbered. Using address of Tunnel2 (172.16.0.1) MTU 17912 bytes, BW 100 Kbit/sec, DLY 50000 usec, reliability 255/255, txload 7/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive not set Tunnel source 172.19.128.31 Tunnel protocol/transport multi-GRE/IP Key disabled, sequencing disabled Checksumming of packets disabled Tunnel TTL 255, Fast tunneling enabled Tunnel transport MTU 1472 bytes Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 05:17:13, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 3000 bits/sec, 2 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 111685 packets output, 18723536 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out Router#sh ip int tun0 Tunnel0 is up, line protocol is up Interface is unnumbered. Using address of Tunnel2 (172.16.0.1) Broadcast address is 255.255.255.255 MTU is 17856 bytes Helper address is not set Directed broadcast forwarding is disabled Outgoing access list is not set Inbound access list is not set Proxy ARP is enabled Local Proxy ARP is disabled Security level is default Split horizon is enabled ICMP redirects are never sent ICMP unreachables are always sent ICMP mask replies are never sent IP fast switching is enabled IP fast switching on the same interface is disabled IP Flow switching is disabled IP CEF switching is enabled IP CEF switching turbo vector IP Null turbo vector VPN Routing/Forwarding "tunnel-group-ivrf" Downstream VPN Routing/Forwarding "" IP multicast fast switching is enabled IP multicast distributed fast switching is disabled IP route-cache flags are Fast, CEF Router Discovery is disabled IP output packet accounting is disabled IP access violation accounting is disabled TCP/IP header compression is disabled RTP/IP header compression is disabled Policy routing is disabled Network address translation is disabled BGP Policy Mapping is disabled Input features: MCI Check Output features: CCE Post NAT Classification, Firewall (firewall component) WCCP Redirect outbound is disabled WCCP Redirect inbound is disabled WCCP Redirect exclude is disabled Router#sh ip int tun2 Tunnel2 is up, line protocol is up Internet address is 172.16.0.1/16 Broadcast address is 255.255.255.255 Address determined by unknown means MTU is 1476 bytes Helper address is not set Directed broadcast forwarding is disabled Outgoing access list is not set Inbound access list is not set Proxy ARP is enabled Local Proxy ARP is disabled Security level is default Split horizon is enabled ICMP redirects are never sent ICMP unreachables are always sent ICMP mask replies are never sent IP fast switching is enabled IP fast switching on the same interface is disabled IP Flow switching is disabled IP CEF switching is enabled IP CEF switching turbo vector IP Null turbo vector VPN Routing/Forwarding "tunnel-group-ivrf" Downstream VPN Routing/Forwarding "" Tunnel VPN Routing/Forwarding "tunnel-group-ivrf" IP multicast fast switching is enabled IP multicast distributed fast switching is disabled IP route-cache flags are Fast, CEF Router Discovery is disabled IP output packet accounting is disabled IP access violation accounting is disabled TCP/IP header compression is disabled RTP/IP header compression is disabled Policy routing is disabled Network address translation is disabled BGP Policy Mapping is disabled Input features: MCI Check Output features: CCE Post NAT Classification, Firewall (firewall component) WCCP Redirect outbound is disabled WCCP Redirect inbound is disabled WCCP Redirect exclude is disabled Router#sh ip int tun3 Tunnel3 is up, line protocol is up Interface is unnumbered. Using address of Tunnel2 (172.16.0.1) Broadcast address is 255.255.255.255 MTU is 17856 bytes Helper address is not set Directed broadcast forwarding is disabled Outgoing access list is not set Inbound access list is not set Proxy ARP is enabled Local Proxy ARP is disabled Security level is default Split horizon is enabled ICMP redirects are never sent ICMP unreachables are always sent ICMP mask replies are never sent IP fast switching is enabled IP fast switching on the same interface is disabled IP Flow switching is disabled IP CEF switching is enabled IP CEF switching turbo vector IP Null turbo vector VPN Routing/Forwarding "tunnel-group-ivrf" Downstream VPN Routing/Forwarding "" IP multicast fast switching is enabled IP multicast distributed fast switching is disabled IP route-cache flags are Fast, CEF Router Discovery is disabled IP output packet accounting is disabled IP access violation accounting is disabled TCP/IP header compression is disabled RTP/IP header compression is disabled Policy routing is disabled Network address translation is disabled BGP Policy Mapping is disabled Input features: MCI Check Output features: CCE Post NAT Classification, Firewall (firewall component) WCCP Redirect outbound is disabled WCCP Redirect inbound is disabled WCCP Redirect exclude is disabled On Thu, Aug 12, 2010 at 9:39 AM, Luan Nguyen <l...@netcraftsmen.net> wrote: > I have those ISR2 (M1) as well as ASR1002 running DMVPN and don't have those > ghost tunnels. Must be for some other services such as multicast. > Try to remove them with no interface tunnel 0, and I think the router will > tell you why you couldn't. > > Regards, > > -Luan > > -----Original Message----- > From: cisco-nsp-boun...@puck.nether.net > [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Jay Nakamura > Sent: Wednesday, August 11, 2010 8:53 PM > To: cisco-nsp > Subject: [c-nsp] Mysterious tunnel interfaces > > I was working on a ISR 1941 with 15.0(1)M2. I am running DMVPN on it > and using one tunnel interface. (Tunnel 1). No other tunnel > interfaces are configured on the router. However when I do "show int > summary" I get this; > > #sh int summary > > *: interface is up > IHQ: pkts in input hold queue IQD: pkts dropped from input queue > OHQ: pkts in output hold queue OQD: pkts dropped from output queue > RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec) > TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec) > TRTL: throttle count > > Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL > ------------------------------------------------------------------------ > * GigabitEthernet0/0 0 0 0 0 6000 5 6000 5 0 > GigabitEthernet0/1 0 0 0 0 0 0 0 0 0 > * Serial0/0/0 0 0 0 0 3000 3 2000 2 0 > NVI0 0 0 0 0 0 0 0 0 0 > * Tunnel0 0 0 0 0 0 0 0 0 0 > * Tunnel1 0 0 0 10 1000 2 1000 2 0 > * Tunnel2 0 0 0 0 0 0 0 0 0 > * Tunnel3 0 0 0 0 0 0 0 0 0 > > I thought may be something got left behind while I was monkeying > around in it so I reloaded the router and the tunnel 0,2,3 are still > there and it says it's up. None of those interfaces are in the > startup or running-config. > > What is going on here? My other routers with similar config on a 1841 > with 12.4(15)T* doesn't have this issue. It doesn't seem to be > affecting the routing of traffic but it's really bothering me. > > -Jay > _______________________________________________ > cisco-nsp mailing list cisco-...@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5358 (20100811) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5358 (20100811) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5360 (20100812) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5360 (20100812) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/