IP Routing Help

Hello, I am having trouble getting these routes working as expected. I have 3 computers hooked to a Catalyst. I also have a 7206 into that Catalyst. I also have 4 seperate T1s into a 7206. 2 of the T1s are bandwidth from our upstream. The other 2 are for direct connect customers.

We have two class C networks: 22.22.22.* 22.22.23.*

If I traceroute from one of the 3 computers (in the .22.* network) to one of the T1s (in the .23.* network), the 7206 will send the route out one of the provider T1s. They will simply send it back and then the 7206 will send the packet to the customers T1.

This is bad. This is a waste. How come the 7206 won't recognize that the packet is destined for an IP/network that is directly connected to it?

Here is a good example:

"show ip route" shows this:

S 22.22.23.150/32 is directly connected, Serial1/6:6

So if I traceroute from one of the macines in the .22.* it should only be 1 hop to the 7206 then onto 6:6 right? Well it doesn't. I hit the

7206 then upstream then back to 7206 then on to 6:6.

Can someone give some examples of what our routing "should" look like?

If you need more, I can provide some configs.

Thanks, Matthew

Reply to
Matthew
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This really *is* a good example if you understand what you read from it. It shows that router "knows" that is has just one address from the range

22.22.23.y connected to it and not the whole C class network.

I would expect that if you traceroute from .22.* to 22.22.23.150, hops would go as expected....

Reply to
Ivan Ostres

No they don't. Tracerouting from .22.* to 22.22.23.150 still results in the packets going out provider bandwidth #1 then back to us on #2 then on to .150

-Matthew

Reply to
Matthew

Strange...post your config and 'show ip route' output.

Reply to
Ivan Ostres

Ivan Ostres wrote:

Here is what you requested. IP addresses and passwords have been changed to protect the innocent.

173.45.143.* is the network with client computers on the switch. 173.45.144.* is the network with some direct connect T1s 163.209.175.22 these two are our outgoing bandwidth to upstream. 163.209.175.18

Thanks for your help, Matthew

GW#show run Building configuration...

Current configuration : 12279 bytes ! ! Last configuration change at 14:33:40 GMT Tue Jun 28 2005 by keith ! NVRAM config last updated at 15:51:48 GMT Tue Jun 7 2005 by keith ! version 12.3 service timestamps debug datetime localtime service timestamps log datetime msec localtime service password-encryption service compress-config ! hostname GW ! boot-start-marker boot system slot0:c7200-is-mz.123-13.bin boot-end-marker ! card type t1 2 logging buffered 10000 debugging enable secret 5 $4%Copp$C.Hlj7cqN*&je88ESf.K70 ! clock timezone GMT 0 clock calendar-valid dspint DSPfarm2/0 ! aaa new-model ! ! aaa authentication password-prompt Password: aaa authentication username-prompt Login: aaa authentication login default group radius local aaa authentication login localauth local aaa authentication login noauthen none aaa authentication ppp default none aaa authentication ppp network none aaa authorization console aaa authorization exec noauthor none aaa authorization commands 15 noauthor none aaa accounting delay-start aaa session-id common ip subnet-zero ! ! ip cef table consistency-check type lc-detect ip cef table consistency-check type scan-lc ip cef table consistency-check type scan-rp ip cef table consistency-check type scan-rib ip cef no ip domain lookup ! isdn switch-type primary-5ess ! ! ! voice service voip fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback pass-through g711ulaw sip ! voice class codec 1 codec preference 1 g729r8 codec preference 2 g711alaw codec preference 3 g711ulaw ! ! ! voice class h323 1 call start slow ! ! ! ! ! ! ! username myuser password 7 0204080B080D2F251F ! ! controller T1 1/0 framing esf linecode b8zs channel-group 0 timeslots 1-24 ! controller T1 1/1 framing esf linecode b8zs channel-group 1 timeslots 1-24 ! controller T1 1/2 framing esf linecode b8zs channel-group 2 timeslots 1-24 ! controller T1 1/3 framing esf linecode b8zs channel-group 3 timeslots 1-24 ! controller T1 1/4 framing esf linecode b8zs channel-group 4 timeslots 20-24 ! controller T1 1/5 framing esf linecode b8zs channel-group 5 timeslots 1-24 ! controller T1 1/6 framing esf linecode b8zs channel-group 6 timeslots 1-24 ! controller T1 1/7 framing esf linecode b8zs channel-group 7 timeslots 1-24 ! controller T1 2/0 framing esf linecode b8zs cablelength long 0db pri-group timeslots 1-24 ! controller T1 2/1 framing esf linecode b8zs cablelength long 0db pri-group timeslots 1-24 ! class-map match-any AutoQoS-Stream-Video-Se1/2:2 match protocol netshow match protocol rtspplayer match protocol vdolive class-map match-any AutoQoS-Transactional-Se1/2:2 match protocol ssh match protocol notes class-map match-any AutoQoS-VoIP-Remark match ip dscp ef match ip dscp cs3 match ip dscp af31 class-map match-any AutoQoS-Bulk-Se1/2:2 match protocol smtp match protocol pop3 match protocol exchange match protocol secure-pop3 match protocol nntp match protocol ftp class-map match-any AutoQoS-Management-Se1/2:2 match protocol imap match protocol dns match protocol secure-imap class-map match-any AutoQoS-VoIP-Control-UnTrust match access-group name AutoQoS-VoIP-Control class-map match-any AutoQoS-VoIP-RTP-UnTrust match protocol rtp audio match access-group name AutoQoS-VoIP-RTCP ! ! policy-map AutoQoS-Policy-UnTrust class AutoQoS-VoIP-RTP-UnTrust priority percent 70 set dscp ef class AutoQoS-VoIP-Control-UnTrust bandwidth percent 5 set dscp af31 class AutoQoS-VoIP-Remark set dscp default class class-default fair-queue policy-map AutoQoS-Policy-Se1/2:2 class AutoQoS-Stream-Video-Se1/2:2 bandwidth remaining percent 1 set dscp cs4 class AutoQoS-Transactional-Se1/2:2 bandwidth remaining percent 1 random-detect dscp-based set dscp af21 class AutoQoS-Bulk-Se1/2:2 bandwidth remaining percent 15 random-detect dscp-based set dscp af11 class AutoQoS-Management-Se1/2:2 bandwidth remaining percent 1 set dscp cs2 class class-default fair-queue ! gw-accounting aaa acct-template callhistory-detail ! ! translation-rule 3 Rule 1 ^695211 1 Rule 2 ^695212 2 Rule 3 ^695213 3 Rule 4 ^695214 4 Rule 5 ^695215 5 Rule 6 ^695216 6 Rule 7 ^695217 7 Rule 8 ^695218 8 Rule 9 ^695219 9 ! ! ! ! interface Loopback0 ip address 116.86.24.98 255.255.255.255 ! interface FastEthernet0/0 description External-Access ip address 173.45.143.1 255.255.255.0 ip route-cache same-interface no ip mroute-cache ip policy route-map cnw duplex full ! interface FastEthernet0/0.1 ! interface Serial1/0:0 description Peacock ip address 192.168.0.1 255.255.255.252 encapsulation ppp ip mroute-cache autodetect encapsulation ppp ! interface Serial1/1:1 description Marks&Salley ip address 173.45.144.141 255.255.255.252 encapsulation ppp ip mroute-cache no fair-queue ! interface Serial1/2:2 description TimeWarner Bandwidth ip address 163.209.175.18 255.255.255.252 encapsulation ppp h323-gateway voip interface h323-gateway voip id key-dmx1 ipaddr 67.107.77.35 1719 h323-gateway voip h323-id 2091631751 h323-gateway voip tech-prefix 2977# service-policy output AutoQoS-Policy-Se1/2:2 ! interface Serial1/3:3 description TimeWarner Bandwidth ip address 163.209.175.22 255.255.255.252 encapsulation ppp no ip route-cache same-interface ip mroute-cache ! interface Serial1/4:4 description vacant no ip address encapsulation ppp ip mroute-cache shutdown ! interface Serial1/5:5 no ip address ip mroute-cache shutdown auto qos voip service-policy output AutoQoS-Policy-UnTrust ! interface Serial1/6:6 description TEI - Staffing bandwidth 1540 ip address 192.168.2.5 255.255.255.252 encapsulation ppp ip mroute-cache autodetect encapsulation ppp auto qos voip service-policy output AutoQoS-Policy-UnTrust ! interface Serial1/7:7 ip address 192.168.0.9 255.255.255.252 encapsulation ppp ip mroute-cache ! interface Serial2/0:23 no ip address encapsulation ppp no logging event link-status isdn switch-type primary-5ess isdn incoming-voice voice isdn map address 011* plan isdn type international isdn map address 1* plan isdn type national isdn map address 832* plan isdn type national isdn map address 713* plan isdn type national isdn map address 281* plan isdn type national ! interface Serial2/1:23 no ip address encapsulation ppp no logging event link-status isdn switch-type primary-5ess isdn incoming-voice voice isdn map address 011* plan isdn type international isdn map address 1* plan isdn type national isdn map address 832* plan isdn type national isdn map address 713* plan isdn type national isdn map address 281* plan isdn type national ! router bgp 85712 no synchronization bgp log-neighbor-changes network 64.72.107.0 mask 255.255.255.0 network 64.72.108.0 mask 255.255.255.0 network 173.45.143.0 network 173.45.144.0 network 216.136.24.192 mask 255.255.255.240 neighbor 64.72.96.2 remote-as 19750 neighbor 64.72.96.2 version 4 neighbor 64.72.96.2 soft-reconfiguration inbound neighbor 64.72.96.2 route-map BGPWeight in neighbor 207.67.76.24 remote-as 4323 neighbor 207.67.76.24 description Time Warner Telecom neighbor 207.67.76.24 ebgp-multihop 2 neighbor 207.67.76.24 update-source Loopback0 neighbor 207.67.76.24 version 4 neighbor 207.67.76.24 soft-reconfiguration inbound no auto-summary ! ip classless ip route 0.0.0.0 0.0.0.0 163.209.175.21 ip route 64.72.107.0 255.255.255.0 Null0 254 ip route 64.72.108.0 255.255.255.0 Null0 254 ip route 205.215.29.3 255.255.255.255 Serial1/3:3 ip route 207.67.76.24 255.255.255.255 163.209.175.17 ip route 207.67.76.24 255.255.255.255 163.209.175.21 ip route 208.186.228.44 255.255.255.255 Serial1/3:3 ip route 209.244.0.3 255.255.255.255 163.209.175.17 ip route 173.45.143.0 255.255.255.0 Null0 254 ip route 173.45.144.0 255.255.255.0 Null0 254 ip route 173.45.144.0 255.255.255.128 173.45.143.4 ip route 173.45.144.128 255.255.255.252 192.168.0.2 ip route 173.45.144.144 255.255.255.248 Serial1/6:6 ip route 173.45.144.150 255.255.255.255 Serial1/6:6 ip route 173.45.144.152 255.255.255.248 Serial1/7:7 ip route 173.45.144.192 255.255.255.240 173.45.144.222 ip route 173.45.144.248 255.255.255.248 173.45.143.4 ip route 216.136.24.98 255.255.255.255 Null0 254 ip route 216.136.24.192 255.255.255.240 Null0 254 no ip http server ! ip as-path access-list 10 permit ^$ ! ! ip access-list extended AutoQoS-VoIP-Control permit tcp any any eq 1720 permit tcp any any range 11000 11999 permit udp any any eq 2427 permit tcp any any eq 2428 permit tcp any any range 2000 2002 permit udp any any eq 1719 permit udp any any eq 5060 ip access-list extended AutoQoS-VoIP-RTCP permit udp any any range 16384 32767 logging history size 190 access-list 100 permit ip any any access-list 101 deny ip 207.51.254.0 0.0.0.255 any access-list 102 permit ip any any access-list 190 permit udp any any range 16384 33000 access-list 199 permit udp any any eq 1720 access-list 199 permit udp any any eq 1719 access-list 199 permit udp any any eq 1718 access-list 199 permit tcp any any eq 1720 access-list 199 permit tcp any any eq 1719 access-list 199 permit tcp any any eq 1718 priority-list 1 protocol ip high list 199 priority-list 1 protocol ip high fragments ! route-map BGPPrepend permit 10 match ip address 60 match as-path 2 set as-path prepend 31802 31802 31802 31802 31802 31802 ! route-map BGPWeight permit 10 set weight 150 ! route-map localonly permit 10 match as-path 2 ! route-map cnw permit 20 match ip address 103 set ip next-hop 163.209.175.17 163.209.175.21 ! snmp-server community cytel RO snmp-server contact Matthew Boehm, Cypress Telecommunications snmp-server enable traps tty ! radius-server host 173.45.143.7 auth-port 1812 acct-port 1813 radius-server key 7 05255624086D1F5B ! rmon event 33333 log trap AutoQoS description "AutoQoS SNMP traps for Voice Drops" owner AutoQoS rmon alarm 33333 cbQosCMDropBitRate.1263.1265 30 absolute rising-threshold 1 33333 falling-threshold 0 owner AutoQoS rmon alarm 33334 cbQosCMDropBitRate.1319.1321 30 absolute rising-threshold 1 33333 falling-threshold 0 owner AutoQoS ! voice-port 2/0:23 playout-delay maximum 250 playout-delay nominal 80 bearer-cap Speech ! voice-port 2/1:23 playout-delay maximum 250 playout-delay nominal 80 bearer-cap Speech ! ! dial-peer cor custom ! ! ! dial-peer voice 1 pots description CSX preference 1 application session destination-pattern [0-9]T no digit-strip direct-inward-dial port 2/0:23 no register e164 ! dial-peer voice 2 pots description CSX preference 1 application session destination-pattern [0-9]T no digit-strip direct-inward-dial port 2/1:23 no register e164 ! dial-peer voice 10 voip description asterisk preference 1 destination-pattern [0-9]T progress_ind setup enable 3 progress_ind progress enable 8 translate-outgoing called 3 voice-class codec 1 session protocol sipv2 session target ipv4:173.45.143.6 dtmf-relay rtp-nte playout-delay minimum low no vad ! dial-peer voice 11 voip description asterisk preference 1 destination-pattern 69521T progress_ind setup enable 3 progress_ind progress enable 8 translate-outgoing called 3 voice-class codec 1 session protocol sipv2 session target ipv4:173.45.143.6 dtmf-relay rtp-nte playout-delay minimum low no vad ! gateway ! sip-ua nat symmetric check-media-src timers trying 1000 timers disconnect 1000 sip-server ipv4:64.72.107.121 ! ! gatekeeper shutdown ! ! line con 0 authorization commands 15 noauthor authorization exec noauthor login authentication noauthen transport preferred all transport output all stopbits 1 line aux 0 no exec transport preferred all transport input telnet transport output all stopbits 1 line vty 0 4 session-timeout 60 exec-timeout 60 0 password 7 001707560A081C26032D transport preferred all transport input all transport output all ! ! end

##################################################################

GW#show ip route 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 163.209.175.21 to network 0.0.0.0

C 173.45.143.0/24 is directly connected, FastEthernet0/0 64.0.0.0/24 is subnetted, 2 subnets C 64.72.107.0 is directly connected, FastEthernet0/0 S 64.72.108.0 is directly connected, Null0 208.186.228.0/32 is subnetted, 1 subnets S 208.186.228.44 is directly connected, Serial1/3:3 163.209.175.0/24 is variably subnetted, 4 subnets, 2 masks C 163.209.175.21/32 is directly connected, Serial1/2:2 C 163.209.175.20/30 is directly connected, Serial1/3:3 C 163.209.175.17/32 is directly connected, Serial1/3:3 C 163.209.175.16/30 is directly connected, Serial1/2:2 207.67.76.0/32 is subnetted, 1 subnets S 207.67.76.24 [1/0] via 163.209.175.17 [1/0] via 163.209.175.21 216.136.24.0/24 is variably subnetted, 2 subnets, 2 masks C 216.136.24.98/32 is directly connected, Loopback0 S 216.136.24.192/28 is directly connected, Null0 192.168.0.0/24 is variably subnetted, 4 subnets, 2 masks C 192.168.0.8/30 is directly connected, Serial1/7:7 C 192.168.0.10/32 is directly connected, Serial1/7:7 C 192.168.0.0/30 is directly connected, Serial1/0:0 C 192.168.0.2/32 is directly connected, Serial1/0:0 173.45.144.0/24 is variably subnetted, 10 subnets, 6 masks S 173.45.144.0/25 [1/0] via 173.45.143.4 S 173.45.144.0/24 is directly connected, Null0 S 173.45.144.248/29 [1/0] via 173.45.143.4 S 173.45.144.192/28 [1/0] via 173.45.144.222 S 173.45.144.152/29 is directly connected, Serial1/7:7 S 173.45.144.150/32 is directly connected, Serial1/6:6 S 173.45.144.144/29 is directly connected, Serial1/6:6 C 173.45.144.140/30 is directly connected, Serial1/1:1 C 173.45.144.138/32 is directly connected, Serial1/1:1 S 173.45.144.128/30 [1/0] via 192.168.0.2 209.244.0.0/32 is subnetted, 1 subnets S 209.244.0.3 [1/0] via 163.209.175.17 205.215.29.0/32 is subnetted, 1 subnets S 205.215.29.3 is directly connected, Serial1/3:3 192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.2.6/32 is directly connected, Serial1/6:6 C 192.168.2.4/30 is directly connected, Serial1/6:6 S* 0.0.0.0/0 [1/0] via 163.209.175.21

Reply to
Matthew

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