3 Replies Latest reply on Apr 9, 2015 9:10 AM by rkhanso

    TTL in show arp the same for all entries

    rkhanso New Member

      The router has 2 Ethernet interfaces - one WAN, one LAN. No QoS. No firewall.

       

      I'm looking at a Netvanta 3450 router that is seeing 'input errors' and 'no buffer' counters incrementing on both the LAN and WAN interface. The count is incrementing the same per interface, but not the same on both interfaces.....if that makes sense.

       

      They are complaining about packet loss. The interfaces are not seeing any drops, errors, collisions - nothing to indicate any trouble there....other than those input error and no buffer count incrementing at the same rate.

       

      When looking at the arp cache, the TTL field is looking suspect to me.  The count is either 0 or 19 (one is at 20) and doesn't change for all of the entries:

       

      10.123.1.32  0(Unresolved)   eth 0/2            Dynamic
      10.123.2.1   19   00:15:C5:E7:38:77  eth 0/2            Dynamic
      10.123.2.4   19   00:04:23:86:F6:56  eth 0/2            Dynamic
      10.123.2.11  19   00:11:85:D5:45:0E  eth 0/2            Dynamic
      10.123.2.12  19   00:22:19:27:E2:36  eth 0/2            Dynamic
      10.123.2.14  19   D4:BE:D9:B5:42:7C  eth 0/2            Dynamic
      10.123.2.21  19   00:0E:7F:FD:B5:25  eth 0/2            Dynamic
      10.123.2.27  19   00:24:E8:6A:4B:D9  eth 0/2            Dynamic
      10.123.2.37  19   00:22:19:27:E2:18  eth 0/2            Dynamic
      10.123.2.44  19   00:30:6E:0C:8A:AA  eth 0/2            Dynamic
      10.123.2.45  19   00:30:6E:09:51:77  eth 0/2            Dynamic
      10.123.2.50  19   00:24:E8:6F:FA:BC  eth 0/2            Dynamic
      10.123.2.52  19   00:10:18:91:E6:B2  eth 0/2            Dynamic
      10.123.2.55  19   84:2B:2B:FE:3C:86  eth 0/2            Dynamic
      10.123.2.56  19   00:1E:C9:53:47:DC  eth 0/2            Dynamic
      10.123.2.57  19   00:24:E8:6A:4D:B5  eth 0/2            Dynamic
      10.123.2.58  19   00:1E:C9:4A:B3:51  eth 0/2            Dynamic
      10.123.2.60  19   00:1E:C9:4A:91:26  eth 0/2            Dynamic
      10.123.2.100 19   D4:AE:52:CE:41:7B  eth 0/2            Dynamic
      10.123.2.200 19   00:11:85:C3:06:5B  eth 0/2            Dynamic
      10.123.10.2  19   C8:1F:66:25:EB:DF  eth 0/2            Dynamic
      10.123.10.4  19   18:03:73:34:F9:8A  eth 0/2            Dynamic
      10.123.10.6  19   34:17:EB:B3:CC:71  eth 0/2            Dynamic
      10.123.10.8  19   C8:1F:66:05:E2:16  eth 0/2            Dynamic
      10.123.10.9  19   F8:B1:56:A1:DF:BA  eth 0/2            Dynamic
      10.123.10.10 19   F8:BC:12:7B:9F:B3  eth 0/2            Dynamic
      10.123.10.13 19   18:03:73:C5:9C:C4  eth 0/2            Dynamic
      10.123.10.17 19   F0:1F:AF:4A:E2:F7  eth 0/2            Dynamic
      10.123.10.20 19   5C:F9:DD:74:83:8D  eth 0/2            Dynamic
      10.123.10.23 19   F0:1F:AF:29:F0:47  eth 0/2            Dynamic
      10.123.10.25 19   EC:F4:BB:18:A7:BB  eth 0/2            Dynamic
      10.123.10.32 19   C8:1F:66:25:EC:03  eth 0/2            Dynamic
      10.123.10.33 19   90:B1:1C:A0:DD:69  eth 0/2            Dynamic
      10.123.10.35 19   F8:BC:12:6D:C6:DF  eth 0/2            Dynamic
      10.123.10.36 19   A4:1F:72:7B:EF:16  eth 0/2            Dynamic
      10.123.10.37 19   34:17:EB:C1:6A:6B  eth 0/2            Dynamic
      10.123.10.42 19   C8:1F:66:25:F7:E4  eth 0/2            Dynamic
      10.123.10.43 20   D4:BE:D9:A6:09:6D  eth 0/2            Dynamic
      10.123.10.47 19   F8:B1:56:A2:40:6B  eth 0/2            Dynamic
      10.123.10.52 19   C8:1F:66:25:F4:C7  eth 0/2            Dynamic
      10.123.10.53 19   34:17:EB:A6:CD:EA  eth 0/2            Dynamic
      10.123.10.55 0(Unresolved)   eth 0/2            Dynamic
      10.123.10.57 19   34:17:EB:A6:C4:F6  eth 0/2            Dynamic
      10.123.10.59 19   00:18:8B:02:9C:1C  eth 0/2            Dynamic
      10.123.10.60 19   F8:B1:56:CA:77:BA  eth 0/2            Dynamic
      10.123.10.65 19   C8:1F:66:25:F9:B3  eth 0/2            Dynamic
      10.123.10.66 19   F0:1F:AF:66:71:20  eth 0/2            Dynamic
      10.123.10.68 19   00:24:E8:93:63:80  eth 0/2            Dynamic
      10.123.10.69 19   F0:1F:AF:42:26:0D  eth 0/2            Dynamic
      10.123.10.73 19   C8:1F:66:05:DF:81  eth 0/2            Dynamic
      10.123.10.74 19   A4:1F:72:81:21:E2  eth 0/2            Dynamic
      10.123.10.76 19   F8:BC:12:7B:9A:E2  eth 0/2            Dynamic
      10.123.10.77 19   B8:CA:3A:BE:D9:96  eth 0/2            Dynamic
      10.123.10.78 19   D4:BE:D9:31:3E:CB  eth 0/2            Dynamic
      10.123.10.79 19   F0:1F:AF:29:ED:AA  eth 0/2            Dynamic
      10.123.10.81 19   34:17:EB:B2:F2:EA  eth 0/2            Dynamic
      10.123.10.84 19   F8:B1:56:A1:D7:3F  eth 0/2            Dynamic
      10.123.10.85 19   F8:B1:56:9E:FA:96  eth 0/2            Dynamic
      10.123.10.88 0C8:1F:66:25:F9:CF  eth 0/2            Dynamic
      10.123.10.89 19   00:14:22:2B:9D:AD  eth 0/2            Dynamic
      10.123.10.91 19   18:03:73:35:BA:EA  eth 0/2            Dynamic
      10.123.10.93 19   00:18:8B:DA:87:88  eth 0/2            Dynamic
      10.123.10.94 19   F8:BC:12:7B:4F:EE  eth 0/2            Dynamic
      10.123.10.95 19   F0:4D:A2:38:83:6C  eth 0/2            Dynamic
      10.123.10.96 19   C8:1F:66:25:EB:CC  eth 0/2            Dynamic
      10.123.10.97 19   90:B1:1C:A7:CB:6D  eth 0/2            Dynamic
      10.123.10.98 19   90:B1:1C:A0:D9:F4  eth 0/2            Dynamic
      10.123.10.10019   34:17:EB:B1:1A:CA  eth 0/2            Dynamic
      10.123.10.10119   D4:BE:D9:31:2D:5D  eth 0/2            Dynamic
      10.123.10.10919   C8:1F:66:05:E1:7F  eth 0/2            Dynamic
      10.123.10.11019   34:17:EB:B2:F2:DE  eth 0/2            Dynamic
      10.123.10.11319   00:21:70:17:EF:0F  eth 0/2            Dynamic
      10.123.10.12119   C8:1F:66:25:F9:CE  eth 0/2            Dynamic
      10.123.10.12519   18:03:73:E9:2E:31  eth 0/2            Dynamic
      10.123.10.12619   34:17:EB:BD:17:E7  eth 0/2            Dynamic
      10.123.10.12819   00:06:5B:A4:83:96  eth 0/2            Dynamic
      10.123.10.13419   BC:30:5B:A6:84:D1  eth 0/2            Dynamic
      10.123.10.13819   F0:1F:AF:4A:EB:71  eth 0/2            Dynamic
      10.123.10.13919   00:12:3F:CC:B2:8B  eth 0/2            Dynamic
      10.123.10.14019   34:17:EB:A5:92:9F  eth 0/2            Dynamic
      10.123.10.14219   00:24:E8:05:56:A0  eth 0/2            Dynamic
      10.123.10.14419   D4:BE:D9:A5:96:86  eth 0/2            Dynamic
      10.123.10.14519   18:03:73:E9:18:A6  eth 0/2            Dynamic
      10.123.10.14619   F8:B1:56:A1:E5:AD  eth 0/2            Dynamic
      10.123.10.14819   D4:BE:D9:95:BA:52  eth 0/2            Dynamic
      10.123.10.15219   34:17:EB:B4:B9:6D  eth 0/2            Dynamic
      10.123.10.15319   5C:F9:DD:74:6D:A8  eth 0/2            Dynamic
      10.123.10.16019   00:12:3F:C9:EB:EA  eth 0/2            Dynamic
      10.123.10.16119   C8:1F:66:25:F5:9E  eth 0/2            Dynamic
      10.123.10.16319   F8:BC:12:86:EC:B6  eth 0/2            Dynamic
      10.123.10.16419   D4:BE:D9:9B:EB:01  eth 0/2            Dynamic
      10.123.10.16719   00:0B:DB:4B:46:ED  eth 0/2            Dynamic
      10.123.10.16919   5C:26:0A:6B:FA:4B  eth 0/2            Dynamic
      10.123.10.17019   00:21:70:3E:06:92  eth 0/2            Dynamic
      10.123.10.17119   00:12:3F:66:79:C7  eth 0/2            Dynamic
      10.123.10.17319   A4:1F:72:7C:93:51  eth 0/2            Dynamic
      10.123.10.17519   34:17:EB:B4:16:F3  eth 0/2            Dynamic
      10.123.10.17719   F8:BC:12:6D:45:FB  eth 0/2            Dynamic
      10.123.10.17819   C8:1F:66:23:33:F0  eth 0/2            Dynamic
      10.123.10.18219   34:17:EB:B2:E4:C2  eth 0/2            Dynamic
      10.123.10.18619   D4:BE:D9:A6:03:CB  eth 0/2            Dynamic
      10.123.10.18919   34:17:EB:CF:32:A1  eth 0/2            Dynamic
      10.123.10.19119   F0:1F:AF:66:71:16  eth 0/2            Dynamic
      10.123.10.19319   00:1A:A0:4E:FE:6A  eth 0/2            Dynamic
      10.123.10.19419   F0:1F:AF:66:72:21  eth 0/2            Dynamic
      10.123.10.19619   A4:1F:72:81:24:BD  eth 0/2            Dynamic
      10.123.10.19719   D4:BE:D9:A6:16:84  eth 0/2            Dynamic
      10.123.10.19819   00:21:70:3E:07:13  eth 0/2            Dynamic
      10.123.10.20019   18:03:73:E9:14:D4  eth 0/2            Dynamic
      10.123.10.20119   C8:1F:66:25:EE:DD  eth 0/2            Dynamic
      10.123.10.20419   00:18:8B:02:A2:AA  eth 0/2            Dynamic
      10.123.10.20819   00:24:E8:0B:72:F1  eth 0/2            Dynamic
      10.123.10.21019   D4:BE:D9:9B:E8:C6  eth 0/2            Dynamic
      10.123.10.21319   90:B1:1C:A0:31:37  eth 0/2            Dynamic
      10.123.10.21619   34:17:EB:B2:D7:8B  eth 0/2            Dynamic
      10.123.10.21720   00:1A:A0:4B:69:29  eth 0/2            Dynamic
      10.123.10.21819   A4:1F:72:7D:39:EB  eth 0/2            Dynamic
      10.123.10.21919   B8:CA:3A:BE:D9:92  eth 0/2            Dynamic
      10.123.10.22019   C8:1F:66:25:F7:E3  eth 0/2            Dynamic
      10.123.10.22119   F0:1F:AF:66:71:65  eth 0/2            Dynamic
      10.123.10.22319   C8:1F:66:05:E1:81  eth 0/2            Dynamic
      10.123.10.22419   D4:BE:D9:A5:6B:2B  eth 0/2            Dynamic
      10.123.10.22519   A4:1F:72:81:21:E0  eth 0/2            Dynamic
      10.123.10.22619   A4:1F:72:7D:26:F0  eth 0/2            Dynamic
      10.123.10.22719   C8:1F:66:05:E2:A5  eth 0/2            Dynamic
      10.123.10.22819   B8:CA:3A:BE:D9:9D  eth 0/2            Dynamic
      10.123.10.22919   00:1A:A0:4A:95:B2  eth 0/2            Dynamic
      10.123.10.23219   00:12:3F:5C:68:E9  eth 0/2            Dynamic
      10.123.10.23419   A4:1F:72:81:23:F1  eth 0/2            Dynamic
      10.123.10.23519   F0:1F:AF:0A:11:9A  eth 0/2            Dynamic
      10.123.10.23619   D4:BE:D9:31:39:EB  eth 0/2            Dynamic
      10.123.10.23819   F0:1F:AF:29:F0:FE  eth 0/2            Dynamic
      10.123.10.24119   00:1A:A0:4A:42:8A  eth 0/2            Dynamic
      10.123.10.24419   D4:BE:D9:A5:99:97  eth 0/2            Dynamic
      10.123.10.24519   D4:BE:D9:A5:67:85  eth 0/2            Dynamic
      10.123.10.24719   00:24:E8:C2:6A:C3  eth 0/2            Dynamic
      10.123.10.24919   34:17:EB:A6:D6:7E  eth 0/2            Dynamic
      10.123.10.25019   00:25:90:87:10:D2  eth 0/2            Dynamic
      10.123.10.25119   00:1E:0B:3F:1B:17  eth 0/2            Dynamic
      10.123.10.25519   00:1E:C9:73:46:42  eth 0/2            Dynamic
      10.123.11.0  19   B8:CA:3A:A3:65:84  eth 0/2            Dynamic
      10.123.11.2  19   EC:F4:BB:2A:CB:7B  eth 0/2            Dynamic
      10.123.11.4  19   C8:1F:66:25:F7:E6  eth 0/2            Dynamic
      10.123.11.5  19   00:1A:A0:4C:B0:28  eth 0/2            Dynamic
      10.123.11.7  19   EC:F4:BB:56:AE:CA  eth 0/2            Dynamic
      10.123.11.12 19   C8:1F:66:05:E2:AF  eth 0/2            Dynamic
      10.123.11.13 19   00:12:3F:CB:D4:BC  eth 0/2            Dynamic
      10.123.11.15 19   00:22:4D:4B:06:04  eth 0/2            Dynamic
      10.123.11.17 19   B8:EE:65:4C:39:F1  eth 0/2            Dynamic
      10.123.11.19 19   18:03:73:E9:14:F9  eth 0/2            Dynamic
      10.123.11.20 19   E0:DB:55:E9:39:DD  eth 0/2            Dynamic
      10.123.11.22 19   A4:1F:72:52:D2:C0  eth 0/2            Dynamic
      10.123.11.26 000:21:70:14:8F:8D  eth 0/2            Dynamic
      10.123.11.33 19   34:17:EB:A6:CC:A9  eth 0/2            Dynamic
      10.123.11.35 19   00:11:11:AE:DD:18  eth 0/2            Dynamic
      10.123.11.36 000:1A:A0:4F:35:D1  eth 0/2            Dynamic
      10.123.11.39 19   B8:AC:6F:43:C4:06  eth 0/2            Dynamic
      10.123.11.42 000:21:70:3E:06:F3  eth 0/2            Dynamic
      10.123.11.45 03C:18:A0:01:B7:62  eth 0/2            Dynamic
      10.123.11.46 0D4:BE:D9:9B:E4:D3  eth 0/2            Dynamic
      10.123.11.47 000:1A:A0:53:6E:93  eth 0/2            Dynamic
      10.123.11.48 034:17:EB:A6:03:2E  eth 0/2            Dynamic
      10.123.11.54 000:21:70:3E:06:CC  eth 0/2            Dynamic
      10.123.11.55 0F8:B1:56:A1:D2:70  eth 0/2            Dynamic
      10.123.11.59 078:45:C4:39:96:E3  eth 0/2            Dynamic
      10.123.11.61 19   34:17:EB:B3:07:D8  eth 0/2            Dynamic
      10.123.11.66 19   00:24:D6:39:6A:A8  eth 0/2            Dynamic
      10.123.11.70 000:1A:A0:4F:36:05  eth 0/2            Dynamic
      10.123.11.77 19   00:1E:0B:3F:19:D1  eth 0/2            Dynamic
      10.123.11.82 19   F0:4D:A2:39:09:F0  eth 0/2            Dynamic
      10.123.11.84 19   1C:3E:84:99:26:29  eth 0/2            Dynamic
      10.123.11.89 19   00:24:E8:05:64:43  eth 0/2            Dynamic
      10.123.11.97 034:17:EB:A6:D2:B7  eth 0/2            Dynamic
      10.123.11.98 05C:26:0A:05:D0:7A  eth 0/2            Dynamic
      10.123.11.99 0D4:BE:D9:A6:08:C1  eth 0/2            Dynamic
      10.123.11.1040F8:B1:56:A2:DA:EB  eth 0/2            Dynamic
      10.123.11.105000:12:3F:CC:09:47  eth 0/2            Dynamic
      10.123.11.109000:1A:A0:4B:68:AE  eth 0/2            Dynamic
      10.123.11.11819   00:11:11:72:43:69  eth 0/2            Dynamic
      10.123.11.12119   34:17:EB:B4:11:5C  eth 0/2            Dynamic
      10.123.11.12519   00:12:3F:C9:E7:76  eth 0/2            Dynamic
      10.123.11.12619   00:13:72:1D:F6:45  eth 0/2            Dynamic
      10.123.11.127000:21:70:05:B8:8B  eth 0/2            Dynamic
      10.123.11.129000:25:64:C8:BD:A3  eth 0/2            Dynamic
      10.123.11.1320D4:BE:D9:A5:92:69  eth 0/2            Dynamic
      10.123.11.135034:E6:D7:15:26:65  eth 0/2            Dynamic
      10.123.11.137000:24:E8:0B:6D:F9  eth 0/2            Dynamic
      10.123.11.138000:21:70:05:4B:17  eth 0/2            Dynamic
      10.123.11.139000:24:E8:05:60:90  eth 0/2            Dynamic
      10.123.11.14619   EC:F4:BB:56:AB:B5  eth 0/2            Dynamic
      10.123.11.15805C:26:0A:6B:18:DF  eth 0/2            Dynamic
      10.123.11.1590D4:BE:D9:A6:09:F3  eth 0/2            Dynamic
      10.123.11.1600(Unresolved)   eth 0/2            Dynamic
      10.123.11.162000:12:3F:CB:D9:9A  eth 0/2            Dynamic
      10.123.11.16419   34:17:EB:B3:1C:23  eth 0/2            Dynamic
      10.123.11.16619   34:17:EB:B1:11:84  eth 0/2            Dynamic
      10.123.11.172000:1A:A0:4B:6B:DC  eth 0/2            Dynamic
      10.123.11.174000:21:70:17:F5:5A  eth 0/2            Dynamic
      10.123.11.18419   F8:BC:12:7C:C5:21  eth 0/2            Dynamic
      10.123.11.18819   00:12:3F:CA:AB:3B  eth 0/2            Dynamic
      10.123.11.198000:13:72:BF:05:86  eth 0/2            Dynamic
      10.123.11.202000:1A:A0:7B:13:AD  eth 0/2            Dynamic
      10.123.11.21719   F8:B1:56:A2:34:FF  eth 0/2            Dynamic
      10.123.11.21919   B8:CA:3A:BE:D9:98  eth 0/2            Dynamic
      10.123.11.225034:E6:D7:03:A4:C4  eth 0/2            Dynamic
      10.123.11.235000:21:70:DE:44:D6  eth 0/2            Dynamic
      10.123.11.23719   F0:1F:AF:4A:EC:FA  eth 0/2            Dynamic
      10.123.16.33 000:22:75:16:FB:6B  eth 0/2            Dynamic
      10.123.16.42 090:18:7C:6B:EF:14  eth 0/2            Dynamic
      10.123.18.4  018:03:73:C5:FE:B4  eth 0/2            Dynamic
      10.123.18.23 0(Unresolved)   eth 0/2            Dynamic
      10.124.1.100 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.1  000:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.11 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.23 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.31 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.51 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.54 000:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.55 000:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.65 000:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.70 19   00:18:19:5B:F3:00  eth 0/2            Dynamic
      10.124.12.98 000:18:19:5B:F3:00  eth 0/2            Dynamic

       

      I do see there are some unresolved as well.

       

      Adtran said that the ARP limit on the 3450 is 256 per interface. Yesterday, there were 281 entries. There are 222 above this time.

       

      Here are the interfaces:

      router#sh int eth 0/1

      eth 0/1 is UP, line protocol is UP

        Description:

        Hardware address is 00:A0:C8:C5:C2:AD

        Ip address is x.x.x.x, netmask is 255.255.255.252

        IP MTU is 1500 bytes

        BW is 100000 Kbit

        100Mb/s, full-duplex

        ARP type: ARPA; ARP timeout is 20 minutes

        Last clearing of "show interface" counters: 01:58:41

        5 minute input rate 5090624 bits/sec, 974 packets/sec

        5 minute output rate 1964424 bits/sec, 800 packets/sec

          Queueing method: fifo

          Output queue: 0/256/0 (size/max total/drops)

          Interface Shaper: NOT ENABLED

          8106177 packets input, 1874094345 bytes

          8106177 unicasts, 0 broadcasts, 0 multicasts input

          0 unknown protocol, 0 symbol errors, 0 discards

          791 input errors, 0 runts, 0 giants

          791 no buffer, 0 overruns, 0 internal receive errors

          0 alignment errors, 0 crc errors

          6296817 packets output, 1750741625 bytes

          6296805 unicasts, 12 broadcasts, 0 multicasts output

          0 output errors, 0 deferred, 0 discards

          0 single, 0 multiple, 0 late collisions

          0 excessive collisions, 0 underruns

          0 internal transmit errors, 0 carrier sense errors

          0 resets, 0 throttles

      router#sh int eth 0/2

      eth 0/2 is UP, line protocol is UP

        Description: LAN Block 10.123.0.0/16

        Hardware address is 00:A0:C8:C5:C2:AE

        Ip address is 10.123.1.1, netmask is 255.255.0.0

        Secondary IP:

          10.124.1.1, 255.255.0.0

        IP MTU is 1500 bytes

        BW is 100000 Kbit

        100Mb/s, full-duplex

        ARP type: ARPA; ARP timeout is 20 minutes

        Last clearing of "show interface" counters: 01:58:44

        5 minute input rate 2045504 bits/sec, 865 packets/sec

        5 minute output rate 5057096 bits/sec, 979 packets/sec

          Queueing method: fifo

          Output queue: 0/256/0 (size/max total/drops)

          Interface Shaper: NOT ENABLED

          6744450 packets input, 1819053612 bytes

          6511615 unicasts, 232835 broadcasts, 0 multicasts input

          15624 unknown protocol, 0 symbol errors, 0 discards

          1160 input errors, 0 runts, 0 giants

          1160 no buffer, 0 overruns, 0 internal receive errors

          0 alignment errors, 0 crc errors

          8103298 packets output, 1786931986 bytes

          8004204 unicasts, 99094 broadcasts, 0 multicasts output

          0 output errors, 0 deferred, 0 discards

          0 single, 0 multiple, 0 late collisions

          0 excessive collisions, 0 underruns

          0 internal transmit errors, 0 carrier sense errors

          0 resets, 0 throttles

      router#

       

       

      ip ffe is turned on both the interfaces.

      no lldp send-and-receive is off:

       

      router#sh run int eth 0/1

      Building configuration...

      !

      !

      interface eth 0/1

        description I1L:

        speed 100

        ip address  x.x.x.x  255.255.255.252

        no shutdown

        no lldp send-and-receive

      !

      end

      router#sh run int eth 0/2

      Building configuration...

      !

      !

      interface eth 0/2

        description LAN Block 10.123.0.0/16

        speed 100

        ip address  10.123.1.1  255.255.0.0

        ip address  10.124.1.1  255.255.0.0  secondary

        no shutdown

        no lldp send-and-receive

      !

      end

      router#

       

       

      Any thoughts on whether the number of lines in the arp cache really is the source of the problem and a larger router is needed (4305?)? Might there be a PacketPerSecond limit we're hitting? PPS can be up to 1300 each direction.

      Or something else?

       

      The CPU is getting up to 100% at times, with the PacketRouting task occasionally jumping up to 80-90%.

       

      Thanks.

        • Re: TTL in show arp the same for all entries
          rkhanso New Member

          I forgot to add...

           

          If you wait 5 minutes and run a sho arp again,  the numbers are the same. They didn't change/decriment.

            • Re: TTL in show arp the same for all entries
              Employee

              Roger,

               

              You will want to verify that the devices that the ethernet ports connect to are also hard-set to 100/full. It is Adtran's recommendation that these settings match up. So if the ethernet interfaces are hard-set to 100/full, then the peer devices ethernet ports should also be hard-set to 100/full (and not set to auto).

               

              Also, which firmware is currently running on the 4305? You may want to try enabling FFE if you are on firmware previous to R10.4. It is on by default in firmware revisions R10.4 and later.

               

              Let us know if you have any questions.

               

              Thanks,

              Noor