Isn't it elaborated in the DSG and the solution videos? -- Marko Milivojevic - CCIE #18427
:: This message was sent from a mobile device. I apologize for errors and brevity. :: On Jun 29, 2012, at 8:55, "Baldwin, Patrick A. (MSFC-EO60)[HOSC SERVICES CONTRACT]"<[email protected]> wrote: > Yes it is marko. I have send-label on my neighbor statement. Can you > elaborate? I might be about to learn something here. > > Patrick A Baldwin > > On Jun 29, 2012, at 7:51 AM, "Marko Milivojevic" <[email protected]> wrote: > >> Is this the one where BB sits between peers? Could you perhaps send BB some >> labels to make this work? :-) >> >> -- >> Marko Milivojevic - CCIE #18427 >> >> :: This message was sent from a mobile device. I apologize for errors and >> brevity. :: >> >> On Jun 29, 2012, at 1:01, "Baldwin, Patrick A. (MSFC-EO60)[HOSC SERVICES >> CONTRACT]"<[email protected]> wrote: >> >>> Hi Experts, >>> >>> Lets see if anyone can help me shed some light on this weird issue in Vol 3 >>> Lab 7T ticket two. The solution is to setup a EBGP multi hop neighbor >>> relationship between R8 and R2 and I understand all of that. The problem >>> is what my routers are doing and it is driving me nuts. >>> >>> R2 will not form a BGP neighbor relationship with R8 in fact it cannot ping >>> R8 via the BGP route. If I replace the BGP route with a temporary static >>> route or disable CEF then everything works as expected. >>> >>> I notice that the BGP route contains a label while the static route does >>> not, I also understand that MPLS requires CEF so by disabling CEF I am >>> probably bypassing MPLS. Therefore I think the weirdness relates to MPLS >>> but I cannot for the life of me figure it out. Lots and lots of show >>> commands below..... Any ideas what Im doing wrong? >>> >>> Thanks >>> >>> Patrick A Baldwin >>> >>> R2#sh ip cef >>> %IPv4 CEF not running >>> R2#sh ip ro >>> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >>> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area >>> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 >>> E1 - OSPF external type 1, E2 - OSPF external type 2 >>> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 >>> ia - IS-IS inter area, * - candidate default, U - per-user static route >>> o - ODR, P - periodic downloaded static route >>> >>> Gateway of last resort is not set >>> >>> 1.0.0.0/32 is subnetted, 1 subnets >>> B 1.1.1.1 [20/0] via 24.1.1.1, 05:07:56 >>> 24.0.0.0/8 is variably subnetted, 7 subnets, 2 masks >>> C 24.24.1.0/24 is directly connected, GigabitEthernet0/1.24 >>> C 24.24.2.0/24 is directly connected, Serial1/1 >>> O IA 24.56.45.0/24 [110/49] via 24.24.1.4, 05:08:26, >>> GigabitEthernet0/1.24 >>> C 24.1.1.0/24 is directly connected, GigabitEthernet0/1.201 >>> C 24.1.1.1/32 is directly connected, GigabitEthernet0/1.201 >>> C 24.24.24.2/32 is directly connected, Loopback0 >>> O 24.24.24.4/32 [110/2] via 24.24.1.4, 05:08:27, GigabitEthernet0/1.24 >>> 78.0.0.0/32 is subnetted, 2 subnets >>> B 78.78.78.8 [20/0] via 24.1.1.1, 05:07:57 >>> B 78.78.78.7 [20/0] via 78.78.78.8, 04:26:23 >>> 56.0.0.0/32 is subnetted, 2 subnets >>> O E2 56.56.56.5 [110/20] via 24.24.1.4, 05:08:29, GigabitEthernet0/1.24 >>> B 56.56.56.6 [200/0] via 24.24.24.4, 05:07:59 >>> >>> R2#sh ip ro 78.78.78.8 >>> Routing entry for 78.78.78.8/32 >>> Known via "bgp 24", distance 20, metric 0 >>> Tag 1, type external >>> Last update from 24.1.1.1 05:08:41 ago >>> Routing Descriptor Blocks: >>> * 24.1.1.1, from 24.1.1.1, 05:08:41 ago >>> Route metric is 0, traffic share count is 1 >>> AS Hops 2 >>> Route tag 1 >>> >>> R2#sh ip ro 24.1.1.1 >>> Routing entry for 24.1.1.1/32 >>> Known via "connected", distance 0, metric 0 (connected, via interface) >>> Redistributing via bgp 24 >>> Routing Descriptor Blocks: >>> * directly connected, via GigabitEthernet0/1.201 >>> Route metric is 0, traffic share count is 1 >>> >>> >>> R2#sh arp >>> Protocol Address Age (min) Hardware Addr Type Interface >>> Internet 24.1.1.1 71 000c.8532.8500 ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.1.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.24.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.24 >>> Internet 24.24.1.4 72 001b.54fb.a5c9 ARPA >>> GigabitEthernet0/1.24 >>> >>> R2#conf t >>> Enter configuration commands, one per line. End with CNTL/Z. >>> R2(config)#ip cef >>> R2(config)#exit >>> R2# >>> R2#sh ip cef adj g0/1.201 24.1.1.1 >>> 24.1.1.1/32 >>> attached to GigabitEthernet0/1.201 >>> R2#sh arp >>> Protocol Address Age (min) Hardware Addr Type Interface >>> Internet 24.1.1.1 72 000c.8532.8500 ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.1.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.24.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.24 >>> Internet 24.24.1.4 72 001b.54fb.a5c9 ARPA >>> GigabitEthernet0/1.24 >>> >>> R2#sh ip ro 24.1.1.1 >>> Routing entry for 24.1.1.1/32 >>> Known via "connected", distance 0, metric 0 (connected, via interface) >>> Redistributing via bgp 24 >>> Routing Descriptor Blocks: >>> * directly connected, via GigabitEthernet0/1.201 >>> Route metric is 0, traffic share count is 1 >>> >>> R2#sh ip ro 78.78.78.8 >>> Routing entry for 78.78.78.8/32 >>> Known via "bgp 24", distance 20, metric 0 >>> Tag 1, type external >>> Last update from 24.1.1.1 05:10:59 ago >>> Routing Descriptor Blocks: >>> * 24.1.1.1, from 24.1.1.1, 05:10:59 ago >>> Route metric is 0, traffic share count is 1 >>> AS Hops 2 >>> Route tag 1 >>> >>> R2#sh bgp sum >>> BGP router identifier 24.24.24.2, local AS number 24 >>> BGP table version is 10, main routing table version 10 >>> 7 network entries using 924 bytes of memory >>> 8 path entries using 416 bytes of memory >>> 11/6 BGP path/bestpath attribute entries using 1848 bytes of memory >>> 5 BGP AS-PATH entries using 120 bytes of memory >>> 0 BGP route-map cache entries using 0 bytes of memory >>> 0 BGP filter-list cache entries using 0 bytes of memory >>> Bitfield cache entries: current 6 (at peak 6) using 192 bytes of memory >>> BGP using 3500 total bytes of memory >>> BGP activity 14/0 prefixes, 15/0 paths, scan interval 60 secs >>> >>> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down >>> State/PfxRcd >>> 24.1.1.1 4 1 321 318 10 0 0 05:12:21 >>> 2 >>> 24.24.24.4 4 24 318 318 10 0 0 05:11:34 >>> 3 >>> 78.78.78.8 4 78 274 275 10 0 0 04:29:37 >>> 2 >>> >>> R2#ping 24.1.1.1 so 24.24.24.2 >>> >>> Type escape sequence to abort. >>> Sending 5, 100-byte ICMP Echos to 24.1.1.1, timeout is 2 seconds: >>> Packet sent with a source address of 24.24.24.2 >>> !!!!! >>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms >>> >>> R2#ping 78.78.78.8 so 24.24.24.2 >>> >>> Type escape sequence to abort. >>> Sending 5, 100-byte ICMP Echos to 78.78.78.8, timeout is 2 seconds: >>> Packet sent with a source address of 24.24.24.2 >>> ..... >>> Success rate is 0 percent (0/5) >>> R2# >>> *Jun 28 18:05:43.522: %BGP-3-NOTIFICATION: received from neighbor >>> 78.78.78.8 4/0 (hold time expired) 0 bytes >>> R2# >>> *Jun 28 18:05:43.522: %BGP-5-ADJCHANGE: neighbor 78.78.78.8 Down BGP >>> Notification received >>> >>> R2#ping 24.1.1.1 so 24.24.24.2 >>> >>> Type escape sequence to abort. >>> Sending 5, 100-byte ICMP Echos to 24.1.1.1, timeout is 2 seconds: >>> Packet sent with a source address of 24.24.24.2 >>> !!!!! >>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms >>> R2#sh ip cef >>> Prefix Next Hop Interface >>> 0.0.0.0/0 no route >>> 0.0.0.0/8 drop >>> 0.0.0.0/32 receive >>> 1.1.1.1/32 24.1.1.1 GigabitEthernet0/1.201 >>> 24.1.1.0/24 attached GigabitEthernet0/1.201 >>> 24.1.1.0/32 receive GigabitEthernet0/1.201 >>> 24.1.1.1/32 attached GigabitEthernet0/1.201 >>> 24.1.1.2/32 receive GigabitEthernet0/1.201 >>> 24.1.1.255/32 receive GigabitEthernet0/1.201 >>> 24.24.1.0/24 attached GigabitEthernet0/1.24 >>> 24.24.1.0/32 receive GigabitEthernet0/1.24 >>> 24.24.1.2/32 receive GigabitEthernet0/1.24 >>> 24.24.1.4/32 attached GigabitEthernet0/1.24 >>> 24.24.1.255/32 receive GigabitEthernet0/1.24 >>> 24.24.2.0/24 attached Serial1/1 >>> 24.24.2.0/32 receive Serial1/1 >>> 24.24.2.2/32 receive Serial1/1 >>> 24.24.2.4/32 attached Serial1/1 >>> 24.24.2.255/32 receive Serial1/1 >>> 24.24.24.2/32 receive Loopback0 >>> 24.24.24.4/32 24.24.1.4 GigabitEthernet0/1.24 >>> 24.56.45.0/24 24.24.1.4 GigabitEthernet0/1.24 >>> Prefix Next Hop Interface >>> 56.56.56.5/32 24.24.1.4 GigabitEthernet0/1.24 >>> 56.56.56.6/32 24.24.1.4 GigabitEthernet0/1.24 >>> 78.78.78.8/32 24.1.1.1 GigabitEthernet0/1.201 >>> 127.0.0.0/8 drop >>> 224.0.0.0/4 multicast >>> 224.0.0.0/24 receive >>> 240.0.0.0/4 drop >>> 255.255.255.255/32 receive >>> R2#sh arp >>> Protocol Address Age (min) Hardware Addr Type Interface >>> Internet 24.1.1.1 74 000c.8532.8500 ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.1.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.201 >>> Internet 24.24.1.2 - 0012.d9dd.671b ARPA >>> GigabitEthernet0/1.24 >>> Internet 24.24.1.4 75 001b.54fb.a5c9 ARPA >>> GigabitEthernet0/1.24 >>> >>> >>> R2#sh mpls forwarding-table 78.78.78.8 det >>> Local Outgoing Prefix Bytes Label Outgoing Next Hop >>> Label Label or VC or Tunnel Id Switched interface >>> None 275228 78.78.78.8/32 0 drop >>> MAC/Encaps=0/4, MRU=0, Label Stack{275228} >>> 4331C000 >>> No output feature configured >>> >>> R2#debug cef all >>> All CEF debugging is on >>> *Jun 28 18:11:20.542: FIBif: Processing queued interface events >>> *Jun 28 18:11:20.542: FIBif: [sw:<unknown>(11) 67D2F71C] Coming up >>> *Jun 28 18:11:20.542: FIBif: [sw:<unknown>(11) 67D2F71C] Failed: Interface >>> not really up >>> *Jun 28 18:11:20.542: FIBif: Restarting queued interface events >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Locked path >>> list >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:2 >>> R2#ping 78.1.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Unlocking path >>> list >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Locked path >>> list >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[connid=1048577] >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Unlocking >>> path list >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Locked path list >>> *Jun 28 18:11:21.330: HW-API: Counter poll: Label[label=none] >>> *Jun 28 18:11:21.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Unlocking path list >>> R2#ping 78.78.78.8 so 24.24. >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Locked path >>> list >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[label=implicit-null] >>> R2#ping 78.78.78.8 so 24.24.24. >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Unlocking >>> path list >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Locked path >>> list >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[connid=1048577] >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Unlocking >>> path list >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Locked path list >>> *Jun 28 18:11:31.330: HW-API: Counter poll: Label[label=none] >>> *Jun 28 18:11:31.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Unlocking path list >>> R2#ping 78.78.78.8 so 24.24.24.2 >>> >>> Type escape sequence to abort. >>> Sending 5, 100-byte ICMP Echos to 78.78.78.8, timeout is 2 seconds: >>> Packet sent with a source address of 24.24.24.2 >>> >>> *Jun 28 18:11:35.542: FIBif: Processing queued interface events >>> *Jun 28 18:11:35.542: FIBif: [sw:<unknown>(11) 67D2F71C] Coming up >>> *Jun 28 18:11:35.542: FIBif: [sw:<unknown>(11) 67D2F71C] Failed: Interface >>> not really up >>> *Jun 28 18:11:35.542: FIBif: Restarting queued interface events... >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Locked path >>> list >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-r 677B2B1C(6)] Unlocking >>> path list >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Locked path >>> list >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[label=implicit-null] >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v6-r 66C16C10(2)] Unlocking >>> path list >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Locked path >>> list >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[connid=1048577] >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v6-sp 66C16B78(2)] Unlocking >>> path list >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Locked path list >>> *Jun 28 18:11:41.330: HW-API: Counter poll: Label[label=none] >>> *Jun 28 18:11:41.330: FIBpathlist: {l-u} [1:v4-rnh-24.24.24.4[v4:Default] >>> 683F41F4(3)] Unlocking path list.. >>> Success rate is 0 percent (0/5) >>> R2# >>> R2#u all >>> All possible debugging has been turned off >>> >>> R2#sh mpls forwarding-table >>> Local Outgoing Prefix Bytes Label Outgoing Next Hop >>> Label Label or VC or Tunnel Id Switched interface >>> 20 No Label 56.56.56.6/32 0 Gi0/1.24 24.24.1.4 >>> >>> R2#sh cef fib >>> 30 allocated IPv4 entries, 0 failed allocations >>> 11 allocated IPv6 entries, 0 failed allocations >>> >>> R2#sh cef int >>> GigabitEthernet0/1 is up (if_number 2) >>> Corresponding hwidb fast_if_number 13 >>> Corresponding hwidb firstsw->if_number 2 >>> Internet Protocol processing disabled >>> Hardware idb is GigabitEthernet0/1 >>> Fast switching type 1, interface type 27 >>> IP CEF switching enabled >>> IP CEF switching turbo vector >>> IP CEF turbo switching turbo vector >>> IP prefix lookup IPv4 mtrie 8-8-8-8 optimized >>> Input fast flags 0x0, Output fast flags 0x0 >>> ifindex 7(7) >>> Slot Slot unit 1 VC -1 >>> Transm _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? 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