Question about Cisco (1841) Router (cisco1841)

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Cisco 7206 allows telnet but no traffic or ping

As many others here.... I am new to Cisco: so here it goes.
Hardware:
- Cisco 7206 - 4 (8port) cards installed
Layout:
--DeviceC1 --- DevD1....etc
--DeviceC2 --- DevD2....etc
DeviceA --- DeviceB ---<---DeviceC3 --- DevD3....etc
--DeviceC4 --- DevD4....etc
--DeviceC5 --- DevD5....etc
--DeviceC6
DeviceA - my laptop or any other device this side of 7206
DeviceB - Cisco 7206
DeviceC1-6 - Cisco 3745/3725 Routers configured as Multilinks

Basic Config points:
- 6 multilinks defined, 5 are working (all are 3745/3725)
- 1 of the 6 will not allow traffic (DevC5)
- 1 direct serial, also working
Symptom:
- Able to telnet to remote router 3745 (DevC5) only from 7206 (DevB)
- Able to ping to 3745 (DevC5) only if telnet into 7206 (DevB) first
- If 2 hops away at DevA, then DevC5 (3745) then it is not accessable.
- From DevB I can telnet into DevC5 or anyothers downstream (DevD5..etc)
- Cannot telnet into DevC5 except from DevB
- But all these things work fine with DevC1,DevC2,DevC3... etc...
- Only DevC5 is acting funny
- You can also ping back from DevC5 to DevB, but not to DevA
Question/Problem:
- Why is Multilink5 to (DevC5) not allowing traffic, but you can see it?

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  • 108 Answers

Http://www.cisco.com/en/US/docs/voice_ip_comm/uc_system/UC5.0.1/ipt_system_arch/COL_QOS.html


Sounds like maybe a QOS issue. Click the link above to see if this helps.

Also, could be a load balancing issue. Let me know if this helped.

Posted on Jan 17, 2009

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