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S6700 series switch routi...

S6700 series switch routing is not working as properly

Created: Apr 20, 2018 02:14:39Latest reply: Apr 20, 2018 11:49:37 1018 1 1 0

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Fault Type	Service >> IP Routing >> Others
Issue Description	Customer checked routing from S6700, when he tracer the routing it not working as properly. From the routing-table: From trace:
Alarm Information	N/A
Handling Process	1、When check the ipv4 forwarding information base: [HUAWEI-diagnose]displ adp-ipv4 fib 103.74.75.2 slot 0 Prefix : 103.74.75.0/24 Prefix State : Downloaded Vrf Index : 0 Downloaded NHP Count : 2 ECMP Index : 2 ------------------------------------------------ [01] NextHop Type : IP NextHop Address : 10.250.10.50 NextHop Index : 42 NextHop State : Downloaded PDT Index : 0x82000014 Vlan : 503 NHP VrfIndex : 0 Reference : 22 MAC Address : dc-eb-94-67-db-56 [02] NextHop Type : IP NextHop Address : 10.250.10.18 NextHop Index : 44 NextHop State : Downloaded PDT Index : 0x82000011 Vlan : 1210 NHP VrfIndex : 0 Reference : 22 10.250.10.50 dceb-9467-db56 13 D-0 XGE0/0/20 503/- 10.250.10.18 dceb-9467-db40 16 D-0 XGE0/0/17 1210/- But from the trace, the next-hop is not as properly 2、check the ipv4 forwarding information table it takes more than 20k but in current mode only can support 12k. [HUAWEI-diagnose]display fib statistics all IPv4 FIB Total Route Prefix Count : 20546; Entry Count : 20639 IPv4 FIB Public Route Prefix Count : 20546; Entry Count : 20639 [HUAWEI-diagnose]disp adp-l3 ability slo 0 Ability: ---------------------------- MPLS : YES ECMP_HASH : YES GRE : YES SUBIF : YES TUNNEL4OVER6 : NO TUNNEL6OVER4 : YES INNER_LOOPBACK : NO IPv6 : YES SUPPORT_VASP : NO URPF : YES URPF_GLOBAL : NO URPF_ONPORT : YES Spec: ---------------------------- FIB4 : 12288 NHP : 49150
Root Cause	Ipv4 forwarding information table exceed current specification
Solution	Modify the resource mode, and then restart the device to expand the FIB specifications, Command as follow [HUAWEI-diagnose]assign resource-mode ipv4-ipv6 6:1
Suggestions	Notice the device status if device Ipv4 forwarding information table exceed current specification, It will create logs only once times. #Mar 9 2018 21:05:53 HUAWEI L3MB/4/FWDRESLACK:OID 1.3.6.1.4.1.2011.5.25.227.2.1.5 The layer 3 resource usage has reached or exceeded 85%.(EntPhysicalindex=67108873,EntPhysicalName=MPU Board 0,Slot=0,ResourceType=47) #Mar 9 2018 21:05:53 HUAWEI L3MB/4/FWDRESLACK:OID 1.3.6.1.4.1.2011.5.25.227.2.1.5 The layer 3 resource usage has reached or exceeded 85%.(EntPhysicalindex=67108873,EntPhysicalName=MPU Board 0,Slot=0,ResourceType=28)

This post was last edited by SupperRobin at 2018-04-20 02:46.

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wissal

MVE Created Apr 20, 2018 11:49:37

useful document, thanks

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Telecommunications%20engineer%2C%20currently%20senior%20project%20manager%20at%20an%20operator%2C%20partner%20of%20Huawei%2C%20in%20the%20radio%20access%20network%20department%2C%20for%2020%20years%20I%20managed%20several%20types%20of%20projects%2C%20for%20the%20different%20nodes%20of%20the%20network.

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