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asr and portchans

johnelliot6
Level 2
Level 2

Hi Guys,

Just testing an ASR1000 ->2960 portchan w/ test subint on asr  and vlan int on 2960 in same vlan, and Im unable to pass any packets with my "usual" config (7200->2960)...portchan comes up, and I see 2960 mac, but cannot ping.  If I change the setup to use physical Int (i.e. gie1/0/0 as trunk, then gi1/0/0.88 as subint) it works fine?

i.e. not working:

ASR

!

interface Port-channel1

description ETHCHAN_TO_ESW

mtu 1998

no ip address

ip flow ingress

no negotiation auto

interface GigabitEthernet1/0/0

no ip address

ip flow ingress

negotiation auto

no cdp enable

channel-group 1

interface GigabitEthernet2/0/0

no ip address

ip flow ingress

negotiation auto

no cdp enable

channel-group 1

interface Port-channel1.88
description TEST
encapsulation dot1Q 88
ip address 10.10.10.1 255.255.255.252
no ip proxy-arp

Router#sh interface port-channel 1  
Port-channel1 is up, line protocol is up
  Hardware is GEChannel, address is f0f7.5548.50c0 (bia f0f7.5548.50c0)
  Description: ETHCHAN_TO_ESW
  MTU 1998 bytes, BW 2000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
  Keepalive set (10 sec)
  ARP type: ARPA, ARP Timeout 04:00:00
    No. of active members in this channel: 2
        Member 0 : GigabitEthernet1/0/0 , Full-duplex, 1000Mb/s
        Member 1 : GigabitEthernet2/0/0 , Full-duplex, 1000Mb/s

Router#ping 10.10.10.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Router#
Router#
Router#
Router#sh arp        
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  10.10.10.1              -   f0f7.5548.50c0  ARPA   Port-channel1.88
Internet  10.10.10.2             31   0019.06d9.7541  ARPA   Port-channel1.88

Is there something different needed on the ASR for this setup, or am I seeing a potential bug?

Using the following XE on the ASR:  System image file is "bootflash:/asr1000rp1-adventerprisek9.02.01.01.122-33.XNA1.bin"

Cheers.

1 Reply 1

johnelliot6
Level 2
Level 2

Hi - just to reply to my own post, found the following link http://www.cisco.com/en/US/docs/ios/lanswitch/configuration/guide/lsw_cfg_gecvlan_ps9587_TSD_Products_Configuration_Guide_Chapter.html

Which works:

Router#ping 10.10.10.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms

Router#show interfaces port-channel 1 etherchannel
All IDBs List contains 2 configured interfaces
  Port: GigabitEthernet2/0/0 (index: 0)
  Port: GigabitEthernet1/0/0 (index: 2)

Active Member List contains 2 interfaces
  Port: GigabitEthernet1/0/0
    VLAN 1 (Sec, St, D, P)    VLAN 88 (Pri, Ac, C, P)
  Port: GigabitEthernet2/0/0
    VLAN 1 (Pri, Ac, D, P)    VLAN 88 (Sec, St, C, P)
Passive Member List contains 0 interfaces
Bucket Information for VLAN Manual LB:
    Bucket 0   (p=GigabitEthernet2/0/0, s=GigabitEthernet2/0/0) active GigabitEthernet2/0/0
    Bucket 2   (p=GigabitEthernet2/0/0, s=GigabitEthernet1/0/0) active GigabitEthernet2/0/0
    Bucket 8   (p=GigabitEthernet1/0/0, s=GigabitEthernet2/0/0) active GigabitEthernet1/0/0
    Bucket 10   (p=GigabitEthernet1/0/0, s=GigabitEthernet1/0/0) active GigabitEthernet1/0/0

Router#sh etherchannel load-balancing

EtherChannel Load-Balancing Method:

    vlan-manual

but I would prefer load-balancing over the 2 portchan members to be automatic, not have to config them on a per-vlan basis?

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