From: Church, Chuck (cchurch@wamnetgov.com)
Date: Thu Feb 05 2004 - 10:55:34 GMT-3
It's probably a GRE bug. Since it's a switch and tries to do everything in hardware, it's probably something that didn't get coded right and rather than self-pings being sent to the processor, they're dropped by the hardware. Just a guess though...
Chuck Church
CCIE #8776, MCNE, MCSE
Wam!Net Government Services
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
cchurch@wamnetgov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=index&search=cchurch%40wamnetgov.com
> -----Original Message-----
> From: alsontra@hotmail.com [mailto:alsontra@hotmail.com]
> Sent: Wednesday, February 04, 2004 5:05 PM
> To: ccielab@groupstudy.com; Michael Snyder
> Subject: Re: IP GRE Tunnels
>
>
> I'm still not absolutely positive, but.... The CCO says
> "tunnel mode is
> GRE IP by default" and therefore it would stand to reason
> that I shouldn't
> have to use the tunnel mode command if I'm using GRE ip
> encapsulation. None
> the less, when I specify it everything works.
>
>
> CCO reference, under the section that entitled "Configuring the Access
> Router"
> -http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122
> cgcr/fipr_c/ipcpt3/1cfmulti.htm#1001652
>
> Thanks,
> Alsontra
>
> ----- Original Message -----
> From: "Michael Snyder" <msnyder@revolutioncomputer.com>
> To: <ccielab@groupstudy.com>
> Cc: <alsontra@hotmail.com>
> Sent: Wednesday, February 04, 2004 6:27 AM
> Subject: RE: IP GRE Tunnels
>
>
> > To answer the other question.
> >
> > GRE doesn't equal IPIP. See below.
> >
> > Assigned Internet Protocol Numbers
> >
> > Decimal Keyword Protocol References
> > ------- ------- -------- ----------
> > 0 HOPOPT IPv6 Hop-by-Hop Option [RFC1883]
> > 1 ICMP Internet Control Message [RFC792]
> > 2 IGMP Internet Group Management [RFC1112]
> > 3 GGP Gateway-to-Gateway [RFC823]
> > 4 IP IP in IP (encapsulation) [RFC2003]
> > 5 ST Stream [RFC1190,RFC1819]
> > 6 TCP Transmission Control [RFC793]
> > 7 CBT CBT [Ballardie]
> > 8 EGP Exterior Gateway Protocol [RFC888,DLM1]
> > 9 IGP any private interior gateway [IANA]
> > (used by Cisco for their IGRP)
> > 10 BBN-RCC-MON BBN RCC Monitoring [SGC]
> > 11 NVP-II Network Voice Protocol [RFC741,SC3]
> > 12 PUP PUP [PUP,XEROX]
> > 13 ARGUS ARGUS [RWS4]
> > 14 EMCON EMCON [BN7]
> > 15 XNET Cross Net Debugger [IEN158,JFH2]
> > 16 CHAOS Chaos [NC3]
> > 17 UDP User Datagram [RFC768,JBP]
> > 18 MUX Multiplexing [IEN90,JBP]
> > 19 DCN-MEAS DCN Measurement Subsystems [DLM1]
> > 20 HMP Host Monitoring [RFC869,RH6]
> > 21 PRM Packet Radio Measurement [ZSU]
> > 22 XNS-IDP XEROX NS IDP [ETHERNET,XEROX]
> > 23 TRUNK-1 Trunk-1 [BWB6]
> > 24 TRUNK-2 Trunk-2 [BWB6]
> > 25 LEAF-1 Leaf-1 [BWB6]
> > 26 LEAF-2 Leaf-2 [BWB6]
> > 27 RDP Reliable Data Protocol [RFC908,RH6]
> > 28 IRTP Internet Reliable Transaction [RFC938,TXM]
> > 29 ISO-TP4 ISO Transport Protocol Class 4 [RFC905,RC77]
> > 30 NETBLT Bulk Data Transfer Protocol [RFC969,DDC1]
> > 31 MFE-NSP MFE Network Services Protocol [MFENET,BCH2]
> > 32 MERIT-INP MERIT Internodal Protocol [HWB]
> > 33 SEP Sequential Exchange Protocol [JC120]
> > 34 3PC Third Party Connect Protocol [SAF3]
> > 35 IDPR Inter-Domain Policy Routing Protocol [MXS1]
> > 36 XTP XTP [GXC]
> > 37 DDP Datagram Delivery Protocol [WXC]
> > 38 IDPR-CMTP IDPR Control Message Transport Proto [MXS1]
> > 39 TP++ TP++ Transport Protocol [DXF]
> > 40 IL IL Transport Protocol [Presotto]
> > 41 IPv6 Ipv6 [Deering]
> > 42 SDRP Source Demand Routing Protocol [DXE1]
> > 43 IPv6-Route Routing Header for IPv6 [Deering]
> > 44 IPv6-Frag Fragment Header for IPv6 [Deering]
> > 45 IDRP Inter-Domain Routing Protocol [Sue Hares]
> > 46 RSVP Reservation Protocol [Bob Braden]
> > 47 GRE General Routing Encapsulation [Tony Li]
> > 48 MHRP Mobile Host Routing Protocol[David Johnson]
> > 49 BNA BNA [Gary Salamon]
> > 50 ESP Encap Security Payload for IPv6 [RFC2406]
> > 51 AH Authentication Header for IPv6 [RFC2402]
> > 52 I-NLSP Integrated Net Layer Security TUBA [GLENN]
> > 53 SWIPE IP with Encryption [JI6]
> > 54 NARP NBMA Address Resolution Protocol [RFC1735]
> > 55 MOBILE IP Mobility [Perkins]
> > 56 TLSP Transport Layer Security Protocol [Oberg]
> > using Kryptonet key management
> > 57 SKIP SKIP [Markson]
> > 58 IPv6-ICMP ICMP for IPv6 [RFC1883]
> > 59 IPv6-NoNxt No Next Header for IPv6 [RFC1883]
> > 60 IPv6-Opts Destination Options for IPv6 [RFC1883]
> > 61 any host internal protocol [IANA]
> > 62 CFTP CFTP [CFTP,HCF2]
> > 63 any local network [IANA]
> > 64 SAT-EXPAK SATNET and Backroom EXPAK [SHB]
> > 65 KRYPTOLAN Kryptolan [PXL1]
> > 66 RVD MIT Remote Virtual Disk Protocol [MBG]
> > 67 IPPC Internet Pluribus Packet Core [SHB]
> > 68 any distributed file system [IANA]
> > 69 SAT-MON SATNET Monitoring [SHB]
> > 70 VISA VISA Protocol [GXT1]
> > 71 IPCV Internet Packet Core Utility [SHB]
> > 72 CPNX Computer Protocol Network Executive [DXM2]
> > 73 CPHB Computer Protocol Heart Beat [DXM2]
> > 74 WSN Wang Span Network [VXD]
> > 75 PVP Packet Video Protocol [SC3]
> > 76 BR-SAT-MON Backroom SATNET Monitoring [SHB]
> > 77 SUN-ND SUN ND PROTOCOL-Temporary [WM3]
> > 78 WB-MON WIDEBAND Monitoring [SHB]
> > 79 WB-EXPAK WIDEBAND EXPAK [SHB]
> > 80 ISO-IP ISO Internet Protocol [MTR]
> > 81 VMTP VMTP [DRC3]
> > 82 SECURE-VMTP SECURE-VMTP [DRC3]
> > 83 VINES VINES [BXH]
> > 84 TTP TTP [JXS]
> > 85 NSFNET-IGP NSFNET-IGP [HWB]
> > 86 DGP Dissimilar Gateway Protocol [DGP,ML109]
> > 87 TCF TCF [GAL5]
> > 88 EIGRP EIGRP [CISCO,GXS]
> > 89 OSPFIGP OSPFIGP [RFC1583,JTM4]
> > 90 Sprite-RPC Sprite RPC Protocol [SPRITE,BXW]
> > 91 LARP Locus Address Resolution Protocol [BXH]
> > 92 MTP Multicast Transport Protocol [SXA]
> > 93 AX.25 AX.25 Frames [BK29]
> >
> > 94 IPIP IP-within-IP Encapsulation Protocol [JI6]
> > 95 MICP Mobile Internetworking Control Pro. [JI6]
> > 96 SCC-SP Semaphore Communications Sec. Pro. [HXH]
> > 97 ETHERIP Ethernet-within-IP Encapsulation [RFC3378]
> > 98 ENCAP Encapsulation Header [RFC1241,RXB3]
> > 99 any private encryption scheme [IANA]
> > 100 GMTP GMTP [RXB5]
> > 101 IFMP Ipsilon Flow Management Protocol [Hinden]
> > 102 PNNI PNNI over IP [Callon]
> > 103 PIM Protocol Independent Multicast [Farinacci]
> > 104 ARIS ARIS [Feldman]
> > 105 SCPS SCPS [Durst]
> > 106 QNX QNX [Hunter]
> > 107 A/N Active Networks [Braden]
> > 108 IPComp IP Payload Compression Protocol [RFC2393]
> > 109 SNP Sitara Networks Protocol [Sridhar]
> > 110 Compaq-Peer Compaq Peer Protocol [Volpe]
> > 111 IPX-in-IP IPX in IP [Lee]
> > 112 VRRP Virtual Router Redundancy Protocol [Hinden]
> > 113 PGM PGM Reliable Transport Protocol [Speakman]
> > 114 any 0-hop protocol [IANA]
> > 115 L2TP Layer Two Tunneling Protocol [Aboba]
> > 116 DDX D-II Data Exchange (DDX) [Worley]
> > 117 IATP Interactive Agent Transfer Protocol [Murphy]
> > 118 STP Schedule Transfer Protocol [JMP]
> > 119 SRP SpectraLink Radio Protocol [Hamilton]
> > 120 UTI UTI [Lothberg]
> > 121 SMP Simple Message Protocol [Ekblad]
> > 122 SM SM [Crowcroft]
> > 123 PTP Performance Transparency Protocol [Welzl]
> > 124 ISIS over IPv4 [Przygienda]
> > 125 FIRE [Partridge]
> > 126 CRTP Combat Radio Transport Protocol [Sautter]
> > 127 CRUDP Combat Radio User Datagram [Sautter]
> > 128 SSCOPMCE [Waber]
> > 129 IPLT [Hollbach]
> > 130 SPS Secure Packet Shield [McIntosh]
> > 131 PIPE Private IP Encapsulation within IP [Petri]
> > 132 SCTP Stream Control Transmission Protocol [Stewart]
> > 133 FC Fibre Channel [Rajagopal]
> > 134 RSVP-E2E-IGNORE [RFC3175]
> > 135 Mobility Header
> > [RFC-ietf-mobileip-ipv6-24.txt]
> > 136-252 Unassigned [IANA]
> > 253 Use for experimentation and testing [RFC3692]
> > 254 Use for experimentation and testing [RFC3692]
> > 255 Reserved [IANA]
> >
> >
> >
> >
> > -----Original Message-----
> > From: alsontra@hotmail.com [mailto:alsontra@hotmail.com]
> > Sent: Wednesday, February 04, 2004 1:00 AM
> > To: ccielab@groupstudy.com
> > Subject: Re: IP GRE Tunnels
> >
> > Router2's config is posted below. The configs are straight forward.
> > There
> > are no access-list, route-maps, etc. R2 simply runs EIGRP
> to provide the
> > underling connectivity for the tunnel between R5 and SW1.
> >
> > As soon as I typed "tunnel mode ipip", I was able to ping the local
> > interface. There is one thing I neglected to mention. R2 is
> running IOS
> > 11.2
> > and R5 and SW1 are running 12.2. Surly, thats not causing
> the problem?
> > In an
> > event, the tunnel mode command seem to fix all problems.
> All devices are
> > ping-able and seem stable. (spent 2 1/2 hours working this
> problem along
> > side a multicast scenario and I know the CCO logical interface
> > configuration
> > URL by heart.) :-)
> >
> >
> > R2_CONFIG
>
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This archive was generated by hypermail 2.1.4 : Fri Mar 05 2004 - 07:13:46 GMT-3