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The block memory resource is not enough lead to the direct route unreachable

Latest reply: Apr 20, 2018 09:41:45 1621 1 0 0 0

Hello everyone,

Today I want to share with you how to deal with the direct route unreachable due to block memory resource is not enough.

【Problem description】

The topology is AR161 direct connect to AR1220,  assume the ip is on AR161, ip on AR1220. From AR1220 can ping, but from AR161 can't ping

【Problem analysis】

1. Check the ARP table, both router can learn the peer mac address;

2. Check the acl ,do not configure any acl deny the peer ip;

3. Check the block resource and find that the free block is zero.

[AR1220-diagnose]display block pool info
 CAP_MSS_MEM Block Pool information:
 Start Address: 0x46a00000
 Pool ID        : 3
 Page Size      : 131072
 Page Num       : 289
 Free Page Num  : 0
 First Free Page: 0x49f20000

4. Check the acl/ routing-table/ fast forwarding table/session table, find that the fast forwarding table is very big and cost most of block resource.

display acl all

display session number

display session all<?xml:namespace prefix = "o" />

display ip fast-forwarding table number

display ip fast-forwarding table

display ip routing-table statistics 

display ip routing-table

5. Remove some business from the router, and make the block memory resource have surplus.

6. Configure taffic policy filter some useless session;

【Solution description】

Reduce the business or clear the tables, make the block resource is enough.

1. Remove some business from the router, and make the block memory resource have surplus.

2. Configure taffic policy filter some useless session.

That is all I want to share with you! Thank you!

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Created Apr 20, 2018 09:41:45

thanks for your sharing
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