I have a Cisco 3550-24 running eigrp. it uplinked to two 6513 router/switches and downlinked to 5 2960/2950's. the users complained slowness.
I checked the 3550 and show buffers as below:
BAY3500-BSMNT#sh buffers Buffer elements: 483 in free list (500 max allowed) 311732715 hits, 0 misses, 0 created
Public buffer pools: Small buffers, 104 bytes (total 50, permanent 50, peak 56 @ 7w0d): 49 in free list (20 min, 150 max allowed) 124358965 hits, 2 misses, 6 trims, 6 created 0 failures (0 no memory) Middle buffers, 600 bytes (total 25, permanent 25, peak 40 @ 7w0d): 24 in free list (10 min, 150 max allowed) 808186 hits, 6 misses, 18 trims, 18 created 0 failures (0 no memory) Big buffers, 1524 bytes (total 143, permanent 128, peak 160 @ 7w0d): 137 in free list (128 min, 512 max allowed) 64625250 hits, 16052 misses, 47747 trims, 47762 created 0 failures (0 no memory) VeryBig buffers, 4520 bytes (total 0, permanent 0, peak 5 @ 5d13h): 0 in free list (0 min, 0 max allowed) 3293074 hits, 3530622 misses, 7061244 trims, 7061244 created 0 failures (0 no memory) Large buffers, 5024 bytes (total 0, permanent 0): 0 in free list (0 min, 0 max allowed) 0 hits, 0 misses, 0 trims, 0 created 0 failures (0 no memory) Huge buffers, 18024 bytes (total 0, permanent 0): 0 in free list (0 min, 0 max allowed) 0 hits, 0 misses, 0 trims, 0 created 0 failures (0 no memory)
Hits, misses, trims, and created for VeryBig buffers are incrementing fast. it looked the system failed to create VeryBig buffers or it was incapable of doing so.
can something shine some light?
here is show ver:
BAY3500-BSMNT#sh ver Cisco Internetwork Operating System Software IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(11)EA1, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2002 by cisco Systems, Inc. Compiled Wed 28-Aug-02 10:03 by antonino Image text-base: 0x00003000, data-base: 0x0071D658
ROM: Bootstrap program is C3550 boot loader
BAY3500-BSMNT uptime is 47 weeks, 2 days, 1 hour, 56 minutes System returned to ROM by power-on System restarted at 10:02:07 edt Sat Jun 7 2014 System image file is "flash:/c3550-i5q3l2-mz.121-11.EA1/c3550-i5q3l2-mz.121-11.EA1.bin"
cisco WS-C3550-24 (PowerPC) processor (revision G0) with 65526K/8192K bytes of memory. Processor board ID CHK0643W1CW Last reset from warm-reset Bridging software. Running Layer2/3 Switching Image
Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface
Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface
The password-recovery mechanism is enabled. 384K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:0B:46:EA:46:80 Motherboard assembly number: 73-5700-09 Power supply part number: 34-0966-02 Motherboard serial number: CAT064302U0 Power supply serial number: DCA0638126F Model revision number: G0 Motherboard revision number: A0 Model number: WS-C3550-24-EMI System serial number: CHK0643W1CW Configuration register is 0x10F
“Catalyst 8500 Series - Deep Dive”
This event will have place on Tuesday 17th, November 2020 at 10hrs PDT
The Catalyst 8500 Series Edge Platforms are built with the highly programmable, third-generation Cisco Quantum Flow Processor and designed for ...
“Catalyst 8000 Edge Platforms Family Overview”
This event will have place on Wednesday 4th, November 2020 at 10hrs PDT
Designed for an intent-based networks, the Cisco Catalyst 8000 Edge Platforms family offers best-in-class networking and security ...
I'm currently redistributing OSPF to BGP and setting a local pref on the routes. Currently this works fine and having no issues. ip prefix-list ospf-routes seq 10 permit 172.16.100.0/24
route-map ospf-bgp permit 10
match ip address prefix-list ...
Cisco SD-WAN Cloud OnRamp allows you to simplify and secure connectivity to cloud applications and public clouds. Interested in testing out the latest Cisco Cloud OnRamp solutions?
Sign up to try out various use cases with the Cisco SD-WAN Cloud ...
“Use Serviceability Features to Troubleshoot your Cat9K as a Cisco TAC Engineer”
This special event is open only to Cisco Customers and Partners.
Many pages in the Cisco Community are accessible only to Cisco customers, partners, or logged in ...